sqlglot.dialects.snowflake API documentation

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# sqlglot.dialects.snowflake

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       1from __future__ import annotations
       2
       3import typing as t
       4
       5from sqlglot import exp, generator, parser, tokens, transforms
       6from sqlglot.dialects.dialect import (
       7    Dialect,
       8    NormalizationStrategy,
       9    binary_from_function,
      10    build_default_decimal_type,
      11    build_timestamp_from_parts,
      12    date_delta_sql,
      13    date_trunc_to_time,
      14    datestrtodate_sql,
      15    build_formatted_time,
      16    if_sql,
      17    inline_array_sql,
      18    max_or_greatest,
      19    min_or_least,
      20    rename_func,
      21    timestamptrunc_sql,
      22    timestrtotime_sql,
      23    var_map_sql,
      24    map_date_part,
      25)
      26from sqlglot.helper import flatten, is_float, is_int, seq_get
      27from sqlglot.tokens import TokenType
      28
      29if t.TYPE_CHECKING:
      30    from sqlglot._typing import E
      31
      32
      33# from https://docs.snowflake.com/en/sql-reference/functions/to_timestamp.html
      34def _build_datetime(
      35    name: str, kind: exp.DataType.Type, safe: bool = False
      36) -> t.Callable[[t.List], exp.Func]:
      37    def _builder(args: t.List) -> exp.Func:
      38        value = seq_get(args, 0)
      39        int_value = value is not None and is_int(value.name)
      40
      41        if isinstance(value, exp.Literal):
      42            # Converts calls like `TO_TIME('01:02:03')` into casts
      43            if len(args) == 1 and value.is_string and not int_value:
      44                return exp.cast(value, kind)
      45
      46            # Handles `TO_TIMESTAMP(str, fmt)` and `TO_TIMESTAMP(num, scale)` as special
      47            # cases so we can transpile them, since they're relatively common
      48            if kind == exp.DataType.Type.TIMESTAMP:
      49                if int_value:
      50                    return exp.UnixToTime(this=value, scale=seq_get(args, 1))
      51                if not is_float(value.this):
      52                    return build_formatted_time(exp.StrToTime, "snowflake")(args)
      53
      54        if kind == exp.DataType.Type.DATE and not int_value:
      55            formatted_exp = build_formatted_time(exp.TsOrDsToDate, "snowflake")(args)
      56            formatted_exp.set("safe", safe)
      57            return formatted_exp
      58
      59        return exp.Anonymous(this=name, expressions=args)
      60
      61    return _builder
      62
      63
      64def _build_object_construct(args: t.List) -> t.Union[exp.StarMap, exp.Struct]:
      65    expression = parser.build_var_map(args)
      66
      67    if isinstance(expression, exp.StarMap):
      68        return expression
      69
      70    return exp.Struct(
      71        expressions=[
      72            exp.PropertyEQ(this=k, expression=v) for k, v in zip(expression.keys, expression.values)
      73        ]
      74    )
      75
      76
      77def _build_datediff(args: t.List) -> exp.DateDiff:
      78    return exp.DateDiff(
      79        this=seq_get(args, 2), expression=seq_get(args, 1), unit=map_date_part(seq_get(args, 0))
      80    )
      81
      82
      83def _build_date_time_add(expr_type: t.Type[E]) -> t.Callable[[t.List], E]:
      84    def _builder(args: t.List) -> E:
      85        return expr_type(
      86            this=seq_get(args, 2),
      87            expression=seq_get(args, 1),
      88            unit=map_date_part(seq_get(args, 0)),
      89        )
      90
      91    return _builder
      92
      93
      94# https://docs.snowflake.com/en/sql-reference/functions/div0
      95def _build_if_from_div0(args: t.List) -> exp.If:
      96    cond = exp.EQ(this=seq_get(args, 1), expression=exp.Literal.number(0))
      97    true = exp.Literal.number(0)
      98    false = exp.Div(this=seq_get(args, 0), expression=seq_get(args, 1))
      99    return exp.If(this=cond, true=true, false=false)
     100
     101
     102# https://docs.snowflake.com/en/sql-reference/functions/zeroifnull
     103def _build_if_from_zeroifnull(args: t.List) -> exp.If:
     104    cond = exp.Is(this=seq_get(args, 0), expression=exp.Null())
     105    return exp.If(this=cond, true=exp.Literal.number(0), false=seq_get(args, 0))
     106
     107
     108# https://docs.snowflake.com/en/sql-reference/functions/zeroifnull
     109def _build_if_from_nullifzero(args: t.List) -> exp.If:
     110    cond = exp.EQ(this=seq_get(args, 0), expression=exp.Literal.number(0))
     111    return exp.If(this=cond, true=exp.Null(), false=seq_get(args, 0))
     112
     113
     114def _regexpilike_sql(self: Snowflake.Generator, expression: exp.RegexpILike) -> str:
     115    flag = expression.text("flag")
     116
     117    if "i" not in flag:
     118        flag += "i"
     119
     120    return self.func(
     121        "REGEXP_LIKE", expression.this, expression.expression, exp.Literal.string(flag)
     122    )
     123
     124
     125def _build_convert_timezone(args: t.List) -> t.Union[exp.Anonymous, exp.AtTimeZone]:
     126    if len(args) == 3:
     127        return exp.Anonymous(this="CONVERT_TIMEZONE", expressions=args)
     128    return exp.AtTimeZone(this=seq_get(args, 1), zone=seq_get(args, 0))
     129
     130
     131def _build_regexp_replace(args: t.List) -> exp.RegexpReplace:
     132    regexp_replace = exp.RegexpReplace.from_arg_list(args)
     133
     134    if not regexp_replace.args.get("replacement"):
     135        regexp_replace.set("replacement", exp.Literal.string(""))
     136
     137    return regexp_replace
     138
     139
     140def _show_parser(*args: t.Any, **kwargs: t.Any) -> t.Callable[[Snowflake.Parser], exp.Show]:
     141    def _parse(self: Snowflake.Parser) -> exp.Show:
     142        return self._parse_show_snowflake(*args, **kwargs)
     143
     144    return _parse
     145
     146
     147def _date_trunc_to_time(args: t.List) -> exp.DateTrunc | exp.TimestampTrunc:
     148    trunc = date_trunc_to_time(args)
     149    trunc.set("unit", map_date_part(trunc.args["unit"]))
     150    return trunc
     151
     152
     153def _unqualify_unpivot_columns(expression: exp.Expression) -> exp.Expression:
     154    """
     155    Snowflake doesn't allow columns referenced in UNPIVOT to be qualified,
     156    so we need to unqualify them.
     157
     158    Example:
     159        >>> from sqlglot import parse_one
     160        >>> expr = parse_one("SELECT * FROM m_sales UNPIVOT(sales FOR month IN (m_sales.jan, feb, mar, april))")
     161        >>> print(_unqualify_unpivot_columns(expr).sql(dialect="snowflake"))
     162        SELECT * FROM m_sales UNPIVOT(sales FOR month IN (jan, feb, mar, april))
     163    """
     164    if isinstance(expression, exp.Pivot) and expression.unpivot:
     165        expression = transforms.unqualify_columns(expression)
     166
     167    return expression
     168
     169
     170def _flatten_structured_types_unless_iceberg(expression: exp.Expression) -> exp.Expression:
     171    assert isinstance(expression, exp.Create)
     172
     173    def _flatten_structured_type(expression: exp.DataType) -> exp.DataType:
     174        if expression.this in exp.DataType.NESTED_TYPES:
     175            expression.set("expressions", None)
     176        return expression
     177
     178    props = expression.args.get("properties")
     179    if isinstance(expression.this, exp.Schema) and not (props and props.find(exp.IcebergProperty)):
     180        for schema_expression in expression.this.expressions:
     181            if isinstance(schema_expression, exp.ColumnDef):
     182                column_type = schema_expression.kind
     183                if isinstance(column_type, exp.DataType):
     184                    column_type.transform(_flatten_structured_type, copy=False)
     185
     186    return expression
     187
     188
     189class Snowflake(Dialect):
     190    # https://docs.snowflake.com/en/sql-reference/identifiers-syntax
     191    NORMALIZATION_STRATEGY = NormalizationStrategy.UPPERCASE
     192    NULL_ORDERING = "nulls_are_large"
     193    TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'"
     194    SUPPORTS_USER_DEFINED_TYPES = False
     195    SUPPORTS_SEMI_ANTI_JOIN = False
     196    PREFER_CTE_ALIAS_COLUMN = True
     197    TABLESAMPLE_SIZE_IS_PERCENT = True
     198    COPY_PARAMS_ARE_CSV = False
     199
     200    TIME_MAPPING = {
     201        "YYYY": "%Y",
     202        "yyyy": "%Y",
     203        "YY": "%y",
     204        "yy": "%y",
     205        "MMMM": "%B",
     206        "mmmm": "%B",
     207        "MON": "%b",
     208        "mon": "%b",
     209        "MM": "%m",
     210        "mm": "%m",
     211        "DD": "%d",
     212        "dd": "%-d",
     213        "DY": "%a",
     214        "dy": "%w",
     215        "HH24": "%H",
     216        "hh24": "%H",
     217        "HH12": "%I",
     218        "hh12": "%I",
     219        "MI": "%M",
     220        "mi": "%M",
     221        "SS": "%S",
     222        "ss": "%S",
     223        "FF": "%f",
     224        "ff": "%f",
     225        "FF6": "%f",
     226        "ff6": "%f",
     227    }
     228
     229    def quote_identifier(self, expression: E, identify: bool = True) -> E:
     230        # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an
     231        # unquoted DUAL keyword in a special way and does not map it to a user-defined table
     232        if (
     233            isinstance(expression, exp.Identifier)
     234            and isinstance(expression.parent, exp.Table)
     235            and expression.name.lower() == "dual"
     236        ):
     237            return expression  # type: ignore
     238
     239        return super().quote_identifier(expression, identify=identify)
     240
     241    class Parser(parser.Parser):
     242        IDENTIFY_PIVOT_STRINGS = True
     243        DEFAULT_SAMPLING_METHOD = "BERNOULLI"
     244        COLON_IS_VARIANT_EXTRACT = True
     245
     246        ID_VAR_TOKENS = {
     247            *parser.Parser.ID_VAR_TOKENS,
     248            TokenType.MATCH_CONDITION,
     249        }
     250
     251        TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW}
     252        TABLE_ALIAS_TOKENS.discard(TokenType.MATCH_CONDITION)
     253
     254        FUNCTIONS = {
     255            **parser.Parser.FUNCTIONS,
     256            "APPROX_PERCENTILE": exp.ApproxQuantile.from_arg_list,
     257            "ARRAYAGG": exp.ArrayAgg.from_arg_list,
     258            "ARRAY_CONSTRUCT": exp.Array.from_arg_list,
     259            "ARRAY_CONTAINS": lambda args: exp.ArrayContains(
     260                this=seq_get(args, 1), expression=seq_get(args, 0)
     261            ),
     262            "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries(
     263                # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive
     264                start=seq_get(args, 0),
     265                end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)),
     266                step=seq_get(args, 2),
     267            ),
     268            "BITXOR": binary_from_function(exp.BitwiseXor),
     269            "BIT_XOR": binary_from_function(exp.BitwiseXor),
     270            "BOOLXOR": binary_from_function(exp.Xor),
     271            "CONVERT_TIMEZONE": _build_convert_timezone,
     272            "DATE": _build_datetime("DATE", exp.DataType.Type.DATE),
     273            "DATE_TRUNC": _date_trunc_to_time,
     274            "DATEADD": _build_date_time_add(exp.DateAdd),
     275            "DATEDIFF": _build_datediff,
     276            "DIV0": _build_if_from_div0,
     277            "FLATTEN": exp.Explode.from_arg_list,
     278            "GET_PATH": lambda args, dialect: exp.JSONExtract(
     279                this=seq_get(args, 0), expression=dialect.to_json_path(seq_get(args, 1))
     280            ),
     281            "IFF": exp.If.from_arg_list,
     282            "LAST_DAY": lambda args: exp.LastDay(
     283                this=seq_get(args, 0), unit=map_date_part(seq_get(args, 1))
     284            ),
     285            "LEN": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
     286            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
     287            "LISTAGG": exp.GroupConcat.from_arg_list,
     288            "MEDIAN": lambda args: exp.PercentileCont(
     289                this=seq_get(args, 0), expression=exp.Literal.number(0.5)
     290            ),
     291            "NULLIFZERO": _build_if_from_nullifzero,
     292            "OBJECT_CONSTRUCT": _build_object_construct,
     293            "REGEXP_REPLACE": _build_regexp_replace,
     294            "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list,
     295            "RLIKE": exp.RegexpLike.from_arg_list,
     296            "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)),
     297            "TIMEADD": _build_date_time_add(exp.TimeAdd),
     298            "TIMEDIFF": _build_datediff,
     299            "TIMESTAMPADD": _build_date_time_add(exp.DateAdd),
     300            "TIMESTAMPDIFF": _build_datediff,
     301            "TIMESTAMPFROMPARTS": build_timestamp_from_parts,
     302            "TIMESTAMP_FROM_PARTS": build_timestamp_from_parts,
     303            "TRY_PARSE_JSON": lambda args: exp.ParseJSON(this=seq_get(args, 0), safe=True),
     304            "TRY_TO_DATE": _build_datetime("TRY_TO_DATE", exp.DataType.Type.DATE, safe=True),
     305            "TO_DATE": _build_datetime("TO_DATE", exp.DataType.Type.DATE),
     306            "TO_NUMBER": lambda args: exp.ToNumber(
     307                this=seq_get(args, 0),
     308                format=seq_get(args, 1),
     309                precision=seq_get(args, 2),
     310                scale=seq_get(args, 3),
     311            ),
     312            "TO_TIME": _build_datetime("TO_TIME", exp.DataType.Type.TIME),
     313            "TO_TIMESTAMP": _build_datetime("TO_TIMESTAMP", exp.DataType.Type.TIMESTAMP),
     314            "TO_TIMESTAMP_LTZ": _build_datetime("TO_TIMESTAMP_LTZ", exp.DataType.Type.TIMESTAMPLTZ),
     315            "TO_TIMESTAMP_NTZ": _build_datetime("TO_TIMESTAMP_NTZ", exp.DataType.Type.TIMESTAMP),
     316            "TO_TIMESTAMP_TZ": _build_datetime("TO_TIMESTAMP_TZ", exp.DataType.Type.TIMESTAMPTZ),
     317            "TO_VARCHAR": exp.ToChar.from_arg_list,
     318            "ZEROIFNULL": _build_if_from_zeroifnull,
     319        }
     320
     321        FUNCTION_PARSERS = {
     322            **parser.Parser.FUNCTION_PARSERS,
     323            "DATE_PART": lambda self: self._parse_date_part(),
     324            "OBJECT_CONSTRUCT_KEEP_NULL": lambda self: self._parse_json_object(),
     325        }
     326        FUNCTION_PARSERS.pop("TRIM")
     327
     328        TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME}
     329
     330        RANGE_PARSERS = {
     331            **parser.Parser.RANGE_PARSERS,
     332            TokenType.LIKE_ANY: parser.binary_range_parser(exp.LikeAny),
     333            TokenType.ILIKE_ANY: parser.binary_range_parser(exp.ILikeAny),
     334        }
     335
     336        ALTER_PARSERS = {
     337            **parser.Parser.ALTER_PARSERS,
     338            "UNSET": lambda self: self.expression(
     339                exp.Set,
     340                tag=self._match_text_seq("TAG"),
     341                expressions=self._parse_csv(self._parse_id_var),
     342                unset=True,
     343            ),
     344            "SWAP": lambda self: self._parse_alter_table_swap(),
     345        }
     346
     347        STATEMENT_PARSERS = {
     348            **parser.Parser.STATEMENT_PARSERS,
     349            TokenType.SHOW: lambda self: self._parse_show(),
     350        }
     351
     352        PROPERTY_PARSERS = {
     353            **parser.Parser.PROPERTY_PARSERS,
     354            "LOCATION": lambda self: self._parse_location_property(),
     355        }
     356
     357        TYPE_CONVERTERS = {
     358            # https://docs.snowflake.com/en/sql-reference/data-types-numeric#number
     359            exp.DataType.Type.DECIMAL: build_default_decimal_type(precision=38, scale=0),
     360        }
     361
     362        SHOW_PARSERS = {
     363            "SCHEMAS": _show_parser("SCHEMAS"),
     364            "TERSE SCHEMAS": _show_parser("SCHEMAS"),
     365            "OBJECTS": _show_parser("OBJECTS"),
     366            "TERSE OBJECTS": _show_parser("OBJECTS"),
     367            "TABLES": _show_parser("TABLES"),
     368            "TERSE TABLES": _show_parser("TABLES"),
     369            "VIEWS": _show_parser("VIEWS"),
     370            "TERSE VIEWS": _show_parser("VIEWS"),
     371            "PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
     372            "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
     373            "IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
     374            "TERSE IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
     375            "UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
     376            "TERSE UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
     377            "SEQUENCES": _show_parser("SEQUENCES"),
     378            "TERSE SEQUENCES": _show_parser("SEQUENCES"),
     379            "COLUMNS": _show_parser("COLUMNS"),
     380            "USERS": _show_parser("USERS"),
     381            "TERSE USERS": _show_parser("USERS"),
     382        }
     383
     384        CONSTRAINT_PARSERS = {
     385            **parser.Parser.CONSTRAINT_PARSERS,
     386            "WITH": lambda self: self._parse_with_constraint(),
     387            "MASKING": lambda self: self._parse_with_constraint(),
     388            "PROJECTION": lambda self: self._parse_with_constraint(),
     389            "TAG": lambda self: self._parse_with_constraint(),
     390        }
     391
     392        STAGED_FILE_SINGLE_TOKENS = {
     393            TokenType.DOT,
     394            TokenType.MOD,
     395            TokenType.SLASH,
     396        }
     397
     398        FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"]
     399
     400        SCHEMA_KINDS = {"OBJECTS", "TABLES", "VIEWS", "SEQUENCES", "UNIQUE KEYS", "IMPORTED KEYS"}
     401
     402        NON_TABLE_CREATABLES = {"STORAGE INTEGRATION", "TAG", "WAREHOUSE", "STREAMLIT"}
     403
     404        LAMBDAS = {
     405            **parser.Parser.LAMBDAS,
     406            TokenType.ARROW: lambda self, expressions: self.expression(
     407                exp.Lambda,
     408                this=self._replace_lambda(
     409                    self._parse_assignment(),
     410                    expressions,
     411                ),
     412                expressions=[e.this if isinstance(e, exp.Cast) else e for e in expressions],
     413            ),
     414        }
     415
     416        def _parse_with_constraint(self) -> t.Optional[exp.Expression]:
     417            if self._prev.token_type != TokenType.WITH:
     418                self._retreat(self._index - 1)
     419
     420            if self._match_text_seq("MASKING", "POLICY"):
     421                policy = self._parse_column()
     422                return self.expression(
     423                    exp.MaskingPolicyColumnConstraint,
     424                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
     425                    expressions=self._match(TokenType.USING)
     426                    and self._parse_wrapped_csv(self._parse_id_var),
     427                )
     428            if self._match_text_seq("PROJECTION", "POLICY"):
     429                policy = self._parse_column()
     430                return self.expression(
     431                    exp.ProjectionPolicyColumnConstraint,
     432                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
     433                )
     434            if self._match(TokenType.TAG):
     435                return self.expression(
     436                    exp.TagColumnConstraint,
     437                    expressions=self._parse_wrapped_csv(self._parse_property),
     438                )
     439
     440            return None
     441
     442        def _parse_create(self) -> exp.Create | exp.Command:
     443            expression = super()._parse_create()
     444            if isinstance(expression, exp.Create) and expression.kind in self.NON_TABLE_CREATABLES:
     445                # Replace the Table node with the enclosed Identifier
     446                expression.this.replace(expression.this.this)
     447
     448            return expression
     449
     450        # https://docs.snowflake.com/en/sql-reference/functions/date_part.html
     451        # https://docs.snowflake.com/en/sql-reference/functions-date-time.html#label-supported-date-time-parts
     452        def _parse_date_part(self: Snowflake.Parser) -> t.Optional[exp.Expression]:
     453            this = self._parse_var() or self._parse_type()
     454
     455            if not this:
     456                return None
     457
     458            self._match(TokenType.COMMA)
     459            expression = self._parse_bitwise()
     460            this = map_date_part(this)
     461            name = this.name.upper()
     462
     463            if name.startswith("EPOCH"):
     464                if name == "EPOCH_MILLISECOND":
     465                    scale = 10**3
     466                elif name == "EPOCH_MICROSECOND":
     467                    scale = 10**6
     468                elif name == "EPOCH_NANOSECOND":
     469                    scale = 10**9
     470                else:
     471                    scale = None
     472
     473                ts = self.expression(exp.Cast, this=expression, to=exp.DataType.build("TIMESTAMP"))
     474                to_unix: exp.Expression = self.expression(exp.TimeToUnix, this=ts)
     475
     476                if scale:
     477                    to_unix = exp.Mul(this=to_unix, expression=exp.Literal.number(scale))
     478
     479                return to_unix
     480
     481            return self.expression(exp.Extract, this=this, expression=expression)
     482
     483        def _parse_bracket_key_value(self, is_map: bool = False) -> t.Optional[exp.Expression]:
     484            if is_map:
     485                # Keys are strings in Snowflake's objects, see also:
     486                # - https://docs.snowflake.com/en/sql-reference/data-types-semistructured
     487                # - https://docs.snowflake.com/en/sql-reference/functions/object_construct
     488                return self._parse_slice(self._parse_string())
     489
     490            return self._parse_slice(self._parse_alias(self._parse_assignment(), explicit=True))
     491
     492        def _parse_lateral(self) -> t.Optional[exp.Lateral]:
     493            lateral = super()._parse_lateral()
     494            if not lateral:
     495                return lateral
     496
     497            if isinstance(lateral.this, exp.Explode):
     498                table_alias = lateral.args.get("alias")
     499                columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS]
     500                if table_alias and not table_alias.args.get("columns"):
     501                    table_alias.set("columns", columns)
     502                elif not table_alias:
     503                    exp.alias_(lateral, "_flattened", table=columns, copy=False)
     504
     505            return lateral
     506
     507        def _parse_table_parts(
     508            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
     509        ) -> exp.Table:
     510            # https://docs.snowflake.com/en/user-guide/querying-stage
     511            if self._match(TokenType.STRING, advance=False):
     512                table = self._parse_string()
     513            elif self._match_text_seq("@", advance=False):
     514                table = self._parse_location_path()
     515            else:
     516                table = None
     517
     518            if table:
     519                file_format = None
     520                pattern = None
     521
     522                wrapped = self._match(TokenType.L_PAREN)
     523                while self._curr and wrapped and not self._match(TokenType.R_PAREN):
     524                    if self._match_text_seq("FILE_FORMAT", "=>"):
     525                        file_format = self._parse_string() or super()._parse_table_parts(
     526                            is_db_reference=is_db_reference
     527                        )
     528                    elif self._match_text_seq("PATTERN", "=>"):
     529                        pattern = self._parse_string()
     530                    else:
     531                        break
     532
     533                    self._match(TokenType.COMMA)
     534
     535                table = self.expression(exp.Table, this=table, format=file_format, pattern=pattern)
     536            else:
     537                table = super()._parse_table_parts(schema=schema, is_db_reference=is_db_reference)
     538
     539            return table
     540
     541        def _parse_id_var(
     542            self,
     543            any_token: bool = True,
     544            tokens: t.Optional[t.Collection[TokenType]] = None,
     545        ) -> t.Optional[exp.Expression]:
     546            if self._match_text_seq("IDENTIFIER", "("):
     547                identifier = (
     548                    super()._parse_id_var(any_token=any_token, tokens=tokens)
     549                    or self._parse_string()
     550                )
     551                self._match_r_paren()
     552                return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier])
     553
     554            return super()._parse_id_var(any_token=any_token, tokens=tokens)
     555
     556        def _parse_show_snowflake(self, this: str) -> exp.Show:
     557            scope = None
     558            scope_kind = None
     559
     560            # will identity SHOW TERSE SCHEMAS but not SHOW TERSE PRIMARY KEYS
     561            # which is syntactically valid but has no effect on the output
     562            terse = self._tokens[self._index - 2].text.upper() == "TERSE"
     563
     564            history = self._match_text_seq("HISTORY")
     565
     566            like = self._parse_string() if self._match(TokenType.LIKE) else None
     567
     568            if self._match(TokenType.IN):
     569                if self._match_text_seq("ACCOUNT"):
     570                    scope_kind = "ACCOUNT"
     571                elif self._match_set(self.DB_CREATABLES):
     572                    scope_kind = self._prev.text.upper()
     573                    if self._curr:
     574                        scope = self._parse_table_parts()
     575                elif self._curr:
     576                    scope_kind = "SCHEMA" if this in self.SCHEMA_KINDS else "TABLE"
     577                    scope = self._parse_table_parts()
     578
     579            return self.expression(
     580                exp.Show,
     581                **{
     582                    "terse": terse,
     583                    "this": this,
     584                    "history": history,
     585                    "like": like,
     586                    "scope": scope,
     587                    "scope_kind": scope_kind,
     588                    "starts_with": self._match_text_seq("STARTS", "WITH") and self._parse_string(),
     589                    "limit": self._parse_limit(),
     590                    "from": self._parse_string() if self._match(TokenType.FROM) else None,
     591                },
     592            )
     593
     594        def _parse_alter_table_swap(self) -> exp.SwapTable:
     595            self._match_text_seq("WITH")
     596            return self.expression(exp.SwapTable, this=self._parse_table(schema=True))
     597
     598        def _parse_location_property(self) -> exp.LocationProperty:
     599            self._match(TokenType.EQ)
     600            return self.expression(exp.LocationProperty, this=self._parse_location_path())
     601
     602        def _parse_file_location(self) -> t.Optional[exp.Expression]:
     603            # Parse either a subquery or a staged file
     604            return (
     605                self._parse_select(table=True, parse_subquery_alias=False)
     606                if self._match(TokenType.L_PAREN, advance=False)
     607                else self._parse_table_parts()
     608            )
     609
     610        def _parse_location_path(self) -> exp.Var:
     611            parts = [self._advance_any(ignore_reserved=True)]
     612
     613            # We avoid consuming a comma token because external tables like @foo and @bar
     614            # can be joined in a query with a comma separator, as well as closing paren
     615            # in case of subqueries
     616            while self._is_connected() and not self._match_set(
     617                (TokenType.COMMA, TokenType.L_PAREN, TokenType.R_PAREN), advance=False
     618            ):
     619                parts.append(self._advance_any(ignore_reserved=True))
     620
     621            return exp.var("".join(part.text for part in parts if part))
     622
     623        def _parse_lambda_arg(self) -> t.Optional[exp.Expression]:
     624            this = super()._parse_lambda_arg()
     625
     626            if not this:
     627                return this
     628
     629            typ = self._parse_types()
     630
     631            if typ:
     632                return self.expression(exp.Cast, this=this, to=typ)
     633
     634            return this
     635
     636    class Tokenizer(tokens.Tokenizer):
     637        STRING_ESCAPES = ["\\", "'"]
     638        HEX_STRINGS = [("x'", "'"), ("X'", "'")]
     639        RAW_STRINGS = ["$$"]
     640        COMMENTS = ["--", "//", ("/*", "*/")]
     641
     642        KEYWORDS = {
     643            **tokens.Tokenizer.KEYWORDS,
     644            "BYTEINT": TokenType.INT,
     645            "CHAR VARYING": TokenType.VARCHAR,
     646            "CHARACTER VARYING": TokenType.VARCHAR,
     647            "EXCLUDE": TokenType.EXCEPT,
     648            "ILIKE ANY": TokenType.ILIKE_ANY,
     649            "LIKE ANY": TokenType.LIKE_ANY,
     650            "MATCH_CONDITION": TokenType.MATCH_CONDITION,
     651            "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE,
     652            "MINUS": TokenType.EXCEPT,
     653            "NCHAR VARYING": TokenType.VARCHAR,
     654            "PUT": TokenType.COMMAND,
     655            "REMOVE": TokenType.COMMAND,
     656            "RM": TokenType.COMMAND,
     657            "SAMPLE": TokenType.TABLE_SAMPLE,
     658            "SQL_DOUBLE": TokenType.DOUBLE,
     659            "SQL_VARCHAR": TokenType.VARCHAR,
     660            "STORAGE INTEGRATION": TokenType.STORAGE_INTEGRATION,
     661            "TAG": TokenType.TAG,
     662            "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ,
     663            "TOP": TokenType.TOP,
     664            "WAREHOUSE": TokenType.WAREHOUSE,
     665            "STREAMLIT": TokenType.STREAMLIT,
     666        }
     667        KEYWORDS.pop("/*+")
     668
     669        SINGLE_TOKENS = {
     670            **tokens.Tokenizer.SINGLE_TOKENS,
     671            "$": TokenType.PARAMETER,
     672        }
     673
     674        VAR_SINGLE_TOKENS = {"$"}
     675
     676        COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW}
     677
     678    class Generator(generator.Generator):
     679        PARAMETER_TOKEN = "$"
     680        MATCHED_BY_SOURCE = False
     681        SINGLE_STRING_INTERVAL = True
     682        JOIN_HINTS = False
     683        TABLE_HINTS = False
     684        QUERY_HINTS = False
     685        AGGREGATE_FILTER_SUPPORTED = False
     686        SUPPORTS_TABLE_COPY = False
     687        COLLATE_IS_FUNC = True
     688        LIMIT_ONLY_LITERALS = True
     689        JSON_KEY_VALUE_PAIR_SEP = ","
     690        INSERT_OVERWRITE = " OVERWRITE INTO"
     691        STRUCT_DELIMITER = ("(", ")")
     692        COPY_PARAMS_ARE_WRAPPED = False
     693        COPY_PARAMS_EQ_REQUIRED = True
     694        STAR_EXCEPT = "EXCLUDE"
     695
     696        TRANSFORMS = {
     697            **generator.Generator.TRANSFORMS,
     698            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
     699            exp.ArgMax: rename_func("MAX_BY"),
     700            exp.ArgMin: rename_func("MIN_BY"),
     701            exp.Array: inline_array_sql,
     702            exp.ArrayConcat: rename_func("ARRAY_CAT"),
     703            exp.ArrayContains: lambda self, e: self.func("ARRAY_CONTAINS", e.expression, e.this),
     704            exp.AtTimeZone: lambda self, e: self.func(
     705                "CONVERT_TIMEZONE", e.args.get("zone"), e.this
     706            ),
     707            exp.BitwiseXor: rename_func("BITXOR"),
     708            exp.Create: transforms.preprocess([_flatten_structured_types_unless_iceberg]),
     709            exp.DateAdd: date_delta_sql("DATEADD"),
     710            exp.DateDiff: date_delta_sql("DATEDIFF"),
     711            exp.DateStrToDate: datestrtodate_sql,
     712            exp.DayOfMonth: rename_func("DAYOFMONTH"),
     713            exp.DayOfWeek: rename_func("DAYOFWEEK"),
     714            exp.DayOfYear: rename_func("DAYOFYEAR"),
     715            exp.Explode: rename_func("FLATTEN"),
     716            exp.Extract: rename_func("DATE_PART"),
     717            exp.FromTimeZone: lambda self, e: self.func(
     718                "CONVERT_TIMEZONE", e.args.get("zone"), "'UTC'", e.this
     719            ),
     720            exp.GenerateSeries: lambda self, e: self.func(
     721                "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step")
     722            ),
     723            exp.GroupConcat: rename_func("LISTAGG"),
     724            exp.If: if_sql(name="IFF", false_value="NULL"),
     725            exp.JSONExtract: lambda self, e: self.func("GET_PATH", e.this, e.expression),
     726            exp.JSONExtractScalar: lambda self, e: self.func(
     727                "JSON_EXTRACT_PATH_TEXT", e.this, e.expression
     728            ),
     729            exp.JSONObject: lambda self, e: self.func("OBJECT_CONSTRUCT_KEEP_NULL", *e.expressions),
     730            exp.JSONPathRoot: lambda *_: "",
     731            exp.LogicalAnd: rename_func("BOOLAND_AGG"),
     732            exp.LogicalOr: rename_func("BOOLOR_AGG"),
     733            exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     734            exp.Max: max_or_greatest,
     735            exp.Min: min_or_least,
     736            exp.ParseJSON: lambda self, e: self.func(
     737                "TRY_PARSE_JSON" if e.args.get("safe") else "PARSE_JSON", e.this
     738            ),
     739            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
     740            exp.PercentileCont: transforms.preprocess(
     741                [transforms.add_within_group_for_percentiles]
     742            ),
     743            exp.PercentileDisc: transforms.preprocess(
     744                [transforms.add_within_group_for_percentiles]
     745            ),
     746            exp.Pivot: transforms.preprocess([_unqualify_unpivot_columns]),
     747            exp.RegexpILike: _regexpilike_sql,
     748            exp.Rand: rename_func("RANDOM"),
     749            exp.Select: transforms.preprocess(
     750                [
     751                    transforms.eliminate_distinct_on,
     752                    transforms.explode_to_unnest(),
     753                    transforms.eliminate_semi_and_anti_joins,
     754                ]
     755            ),
     756            exp.SHA: rename_func("SHA1"),
     757            exp.StarMap: rename_func("OBJECT_CONSTRUCT"),
     758            exp.StartsWith: rename_func("STARTSWITH"),
     759            exp.StrPosition: lambda self, e: self.func(
     760                "POSITION", e.args.get("substr"), e.this, e.args.get("position")
     761            ),
     762            exp.StrToTime: lambda self, e: self.func("TO_TIMESTAMP", e.this, self.format_time(e)),
     763            exp.Stuff: rename_func("INSERT"),
     764            exp.TimeAdd: date_delta_sql("TIMEADD"),
     765            exp.TimestampDiff: lambda self, e: self.func(
     766                "TIMESTAMPDIFF", e.unit, e.expression, e.this
     767            ),
     768            exp.TimestampTrunc: timestamptrunc_sql(),
     769            exp.TimeStrToTime: timestrtotime_sql,
     770            exp.TimeToStr: lambda self, e: self.func(
     771                "TO_CHAR", exp.cast(e.this, exp.DataType.Type.TIMESTAMP), self.format_time(e)
     772            ),
     773            exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})",
     774            exp.ToArray: rename_func("TO_ARRAY"),
     775            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
     776            exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression),
     777            exp.TsOrDsAdd: date_delta_sql("DATEADD", cast=True),
     778            exp.TsOrDsDiff: date_delta_sql("DATEDIFF"),
     779            exp.TsOrDsToDate: lambda self, e: self.func(
     780                "TRY_TO_DATE" if e.args.get("safe") else "TO_DATE", e.this, self.format_time(e)
     781            ),
     782            exp.UnixToTime: rename_func("TO_TIMESTAMP"),
     783            exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     784            exp.WeekOfYear: rename_func("WEEKOFYEAR"),
     785            exp.Xor: rename_func("BOOLXOR"),
     786        }
     787
     788        SUPPORTED_JSON_PATH_PARTS = {
     789            exp.JSONPathKey,
     790            exp.JSONPathRoot,
     791            exp.JSONPathSubscript,
     792        }
     793
     794        TYPE_MAPPING = {
     795            **generator.Generator.TYPE_MAPPING,
     796            exp.DataType.Type.NESTED: "OBJECT",
     797            exp.DataType.Type.STRUCT: "OBJECT",
     798        }
     799
     800        PROPERTIES_LOCATION = {
     801            **generator.Generator.PROPERTIES_LOCATION,
     802            exp.SetProperty: exp.Properties.Location.UNSUPPORTED,
     803            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
     804        }
     805
     806        UNSUPPORTED_VALUES_EXPRESSIONS = {
     807            exp.Map,
     808            exp.StarMap,
     809            exp.Struct,
     810            exp.VarMap,
     811        }
     812
     813        def with_properties(self, properties: exp.Properties) -> str:
     814            return self.properties(properties, wrapped=False, prefix=self.sep(""), sep=" ")
     815
     816        def values_sql(self, expression: exp.Values, values_as_table: bool = True) -> str:
     817            if expression.find(*self.UNSUPPORTED_VALUES_EXPRESSIONS):
     818                values_as_table = False
     819
     820            return super().values_sql(expression, values_as_table=values_as_table)
     821
     822        def datatype_sql(self, expression: exp.DataType) -> str:
     823            expressions = expression.expressions
     824            if (
     825                expressions
     826                and expression.is_type(*exp.DataType.STRUCT_TYPES)
     827                and any(isinstance(field_type, exp.DataType) for field_type in expressions)
     828            ):
     829                # The correct syntax is OBJECT [ (<key> <value_type [NOT NULL] [, ...]) ]
     830                return "OBJECT"
     831
     832            return super().datatype_sql(expression)
     833
     834        def tonumber_sql(self, expression: exp.ToNumber) -> str:
     835            return self.func(
     836                "TO_NUMBER",
     837                expression.this,
     838                expression.args.get("format"),
     839                expression.args.get("precision"),
     840                expression.args.get("scale"),
     841            )
     842
     843        def timestampfromparts_sql(self, expression: exp.TimestampFromParts) -> str:
     844            milli = expression.args.get("milli")
     845            if milli is not None:
     846                milli_to_nano = milli.pop() * exp.Literal.number(1000000)
     847                expression.set("nano", milli_to_nano)
     848
     849            return rename_func("TIMESTAMP_FROM_PARTS")(self, expression)
     850
     851        def trycast_sql(self, expression: exp.TryCast) -> str:
     852            value = expression.this
     853
     854            if value.type is None:
     855                from sqlglot.optimizer.annotate_types import annotate_types
     856
     857                value = annotate_types(value)
     858
     859            if value.is_type(*exp.DataType.TEXT_TYPES, exp.DataType.Type.UNKNOWN):
     860                return super().trycast_sql(expression)
     861
     862            # TRY_CAST only works for string values in Snowflake
     863            return self.cast_sql(expression)
     864
     865        def log_sql(self, expression: exp.Log) -> str:
     866            if not expression.expression:
     867                return self.func("LN", expression.this)
     868
     869            return super().log_sql(expression)
     870
     871        def unnest_sql(self, expression: exp.Unnest) -> str:
     872            unnest_alias = expression.args.get("alias")
     873            offset = expression.args.get("offset")
     874
     875            columns = [
     876                exp.to_identifier("seq"),
     877                exp.to_identifier("key"),
     878                exp.to_identifier("path"),
     879                offset.pop() if isinstance(offset, exp.Expression) else exp.to_identifier("index"),
     880                seq_get(unnest_alias.columns if unnest_alias else [], 0)
     881                or exp.to_identifier("value"),
     882                exp.to_identifier("this"),
     883            ]
     884
     885            if unnest_alias:
     886                unnest_alias.set("columns", columns)
     887            else:
     888                unnest_alias = exp.TableAlias(this="_u", columns=columns)
     889
     890            explode = f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))"
     891            alias = self.sql(unnest_alias)
     892            alias = f" AS {alias}" if alias else ""
     893            return f"{explode}{alias}"
     894
     895        def show_sql(self, expression: exp.Show) -> str:
     896            terse = "TERSE " if expression.args.get("terse") else ""
     897            history = " HISTORY" if expression.args.get("history") else ""
     898            like = self.sql(expression, "like")
     899            like = f" LIKE {like}" if like else ""
     900
     901            scope = self.sql(expression, "scope")
     902            scope = f" {scope}" if scope else ""
     903
     904            scope_kind = self.sql(expression, "scope_kind")
     905            if scope_kind:
     906                scope_kind = f" IN {scope_kind}"
     907
     908            starts_with = self.sql(expression, "starts_with")
     909            if starts_with:
     910                starts_with = f" STARTS WITH {starts_with}"
     911
     912            limit = self.sql(expression, "limit")
     913
     914            from_ = self.sql(expression, "from")
     915            if from_:
     916                from_ = f" FROM {from_}"
     917
     918            return f"SHOW {terse}{expression.name}{history}{like}{scope_kind}{scope}{starts_with}{limit}{from_}"
     919
     920        def regexpextract_sql(self, expression: exp.RegexpExtract) -> str:
     921            # Other dialects don't support all of the following parameters, so we need to
     922            # generate default values as necessary to ensure the transpilation is correct
     923            group = expression.args.get("group")
     924            parameters = expression.args.get("parameters") or (group and exp.Literal.string("c"))
     925            occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1))
     926            position = expression.args.get("position") or (occurrence and exp.Literal.number(1))
     927
     928            return self.func(
     929                "REGEXP_SUBSTR",
     930                expression.this,
     931                expression.expression,
     932                position,
     933                occurrence,
     934                parameters,
     935                group,
     936            )
     937
     938        def except_op(self, expression: exp.Except) -> str:
     939            if not expression.args.get("distinct"):
     940                self.unsupported("EXCEPT with All is not supported in Snowflake")
     941            return super().except_op(expression)
     942
     943        def intersect_op(self, expression: exp.Intersect) -> str:
     944            if not expression.args.get("distinct"):
     945                self.unsupported("INTERSECT with All is not supported in Snowflake")
     946            return super().intersect_op(expression)
     947
     948        def describe_sql(self, expression: exp.Describe) -> str:
     949            # Default to table if kind is unknown
     950            kind_value = expression.args.get("kind") or "TABLE"
     951            kind = f" {kind_value}" if kind_value else ""
     952            this = f" {self.sql(expression, 'this')}"
     953            expressions = self.expressions(expression, flat=True)
     954            expressions = f" {expressions}" if expressions else ""
     955            return f"DESCRIBE{kind}{this}{expressions}"
     956
     957        def generatedasidentitycolumnconstraint_sql(
     958            self, expression: exp.GeneratedAsIdentityColumnConstraint
     959        ) -> str:
     960            start = expression.args.get("start")
     961            start = f" START {start}" if start else ""
     962            increment = expression.args.get("increment")
     963            increment = f" INCREMENT {increment}" if increment else ""
     964            return f"AUTOINCREMENT{start}{increment}"
     965
     966        def swaptable_sql(self, expression: exp.SwapTable) -> str:
     967            this = self.sql(expression, "this")
     968            return f"SWAP WITH {this}"
     969
     970        def cluster_sql(self, expression: exp.Cluster) -> str:
     971            return f"CLUSTER BY ({self.expressions(expression, flat=True)})"
     972
     973        def struct_sql(self, expression: exp.Struct) -> str:
     974            keys = []
     975            values = []
     976
     977            for i, e in enumerate(expression.expressions):
     978                if isinstance(e, exp.PropertyEQ):
     979                    keys.append(
     980                        exp.Literal.string(e.name) if isinstance(e.this, exp.Identifier) else e.this
     981                    )
     982                    values.append(e.expression)
     983                else:
     984                    keys.append(exp.Literal.string(f"_{i}"))
     985                    values.append(e)
     986
     987            return self.func("OBJECT_CONSTRUCT", *flatten(zip(keys, values)))
     988
     989        def approxquantile_sql(self, expression: exp.ApproxQuantile) -> str:
     990            if expression.args.get("weight") or expression.args.get("accuracy"):
     991                self.unsupported(
     992                    "APPROX_PERCENTILE with weight and/or accuracy arguments are not supported in Snowflake"
     993                )
     994
     995            return self.func("APPROX_PERCENTILE", expression.this, expression.args.get("quantile"))
     996
     997        def alterset_sql(self, expression: exp.AlterSet) -> str:
     998            exprs = self.expressions(expression, flat=True)
     999            exprs = f" {exprs}" if exprs else ""
    1000            file_format = self.expressions(expression, key="file_format", flat=True, sep=" ")
    1001            file_format = f" STAGE_FILE_FORMAT = ({file_format})" if file_format else ""
    1002            copy_options = self.expressions(expression, key="copy_options", flat=True, sep=" ")
    1003            copy_options = f" STAGE_COPY_OPTIONS = ({copy_options})" if copy_options else ""
    1004            tag = self.expressions(expression, key="tag", flat=True)
    1005            tag = f" TAG {tag}" if tag else ""
    1006
    1007            return f"SET{exprs}{file_format}{copy_options}{tag}"

class Snowflake(sqlglot.dialects.dialect.Dialect): View Source

     190class Snowflake(Dialect):
     191    # https://docs.snowflake.com/en/sql-reference/identifiers-syntax
     192    NORMALIZATION_STRATEGY = NormalizationStrategy.UPPERCASE
     193    NULL_ORDERING = "nulls_are_large"
     194    TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'"
     195    SUPPORTS_USER_DEFINED_TYPES = False
     196    SUPPORTS_SEMI_ANTI_JOIN = False
     197    PREFER_CTE_ALIAS_COLUMN = True
     198    TABLESAMPLE_SIZE_IS_PERCENT = True
     199    COPY_PARAMS_ARE_CSV = False
     200
     201    TIME_MAPPING = {
     202        "YYYY": "%Y",
     203        "yyyy": "%Y",
     204        "YY": "%y",
     205        "yy": "%y",
     206        "MMMM": "%B",
     207        "mmmm": "%B",
     208        "MON": "%b",
     209        "mon": "%b",
     210        "MM": "%m",
     211        "mm": "%m",
     212        "DD": "%d",
     213        "dd": "%-d",
     214        "DY": "%a",
     215        "dy": "%w",
     216        "HH24": "%H",
     217        "hh24": "%H",
     218        "HH12": "%I",
     219        "hh12": "%I",
     220        "MI": "%M",
     221        "mi": "%M",
     222        "SS": "%S",
     223        "ss": "%S",
     224        "FF": "%f",
     225        "ff": "%f",
     226        "FF6": "%f",
     227        "ff6": "%f",
     228    }
     229
     230    def quote_identifier(self, expression: E, identify: bool = True) -> E:
     231        # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an
     232        # unquoted DUAL keyword in a special way and does not map it to a user-defined table
     233        if (
     234            isinstance(expression, exp.Identifier)
     235            and isinstance(expression.parent, exp.Table)
     236            and expression.name.lower() == "dual"
     237        ):
     238            return expression  # type: ignore
     239
     240        return super().quote_identifier(expression, identify=identify)
     241
     242    class Parser(parser.Parser):
     243        IDENTIFY_PIVOT_STRINGS = True
     244        DEFAULT_SAMPLING_METHOD = "BERNOULLI"
     245        COLON_IS_VARIANT_EXTRACT = True
     246
     247        ID_VAR_TOKENS = {
     248            *parser.Parser.ID_VAR_TOKENS,
     249            TokenType.MATCH_CONDITION,
     250        }
     251
     252        TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW}
     253        TABLE_ALIAS_TOKENS.discard(TokenType.MATCH_CONDITION)
     254
     255        FUNCTIONS = {
     256            **parser.Parser.FUNCTIONS,
     257            "APPROX_PERCENTILE": exp.ApproxQuantile.from_arg_list,
     258            "ARRAYAGG": exp.ArrayAgg.from_arg_list,
     259            "ARRAY_CONSTRUCT": exp.Array.from_arg_list,
     260            "ARRAY_CONTAINS": lambda args: exp.ArrayContains(
     261                this=seq_get(args, 1), expression=seq_get(args, 0)
     262            ),
     263            "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries(
     264                # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive
     265                start=seq_get(args, 0),
     266                end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)),
     267                step=seq_get(args, 2),
     268            ),
     269            "BITXOR": binary_from_function(exp.BitwiseXor),
     270            "BIT_XOR": binary_from_function(exp.BitwiseXor),
     271            "BOOLXOR": binary_from_function(exp.Xor),
     272            "CONVERT_TIMEZONE": _build_convert_timezone,
     273            "DATE": _build_datetime("DATE", exp.DataType.Type.DATE),
     274            "DATE_TRUNC": _date_trunc_to_time,
     275            "DATEADD": _build_date_time_add(exp.DateAdd),
     276            "DATEDIFF": _build_datediff,
     277            "DIV0": _build_if_from_div0,
     278            "FLATTEN": exp.Explode.from_arg_list,
     279            "GET_PATH": lambda args, dialect: exp.JSONExtract(
     280                this=seq_get(args, 0), expression=dialect.to_json_path(seq_get(args, 1))
     281            ),
     282            "IFF": exp.If.from_arg_list,
     283            "LAST_DAY": lambda args: exp.LastDay(
     284                this=seq_get(args, 0), unit=map_date_part(seq_get(args, 1))
     285            ),
     286            "LEN": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
     287            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
     288            "LISTAGG": exp.GroupConcat.from_arg_list,
     289            "MEDIAN": lambda args: exp.PercentileCont(
     290                this=seq_get(args, 0), expression=exp.Literal.number(0.5)
     291            ),
     292            "NULLIFZERO": _build_if_from_nullifzero,
     293            "OBJECT_CONSTRUCT": _build_object_construct,
     294            "REGEXP_REPLACE": _build_regexp_replace,
     295            "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list,
     296            "RLIKE": exp.RegexpLike.from_arg_list,
     297            "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)),
     298            "TIMEADD": _build_date_time_add(exp.TimeAdd),
     299            "TIMEDIFF": _build_datediff,
     300            "TIMESTAMPADD": _build_date_time_add(exp.DateAdd),
     301            "TIMESTAMPDIFF": _build_datediff,
     302            "TIMESTAMPFROMPARTS": build_timestamp_from_parts,
     303            "TIMESTAMP_FROM_PARTS": build_timestamp_from_parts,
     304            "TRY_PARSE_JSON": lambda args: exp.ParseJSON(this=seq_get(args, 0), safe=True),
     305            "TRY_TO_DATE": _build_datetime("TRY_TO_DATE", exp.DataType.Type.DATE, safe=True),
     306            "TO_DATE": _build_datetime("TO_DATE", exp.DataType.Type.DATE),
     307            "TO_NUMBER": lambda args: exp.ToNumber(
     308                this=seq_get(args, 0),
     309                format=seq_get(args, 1),
     310                precision=seq_get(args, 2),
     311                scale=seq_get(args, 3),
     312            ),
     313            "TO_TIME": _build_datetime("TO_TIME", exp.DataType.Type.TIME),
     314            "TO_TIMESTAMP": _build_datetime("TO_TIMESTAMP", exp.DataType.Type.TIMESTAMP),
     315            "TO_TIMESTAMP_LTZ": _build_datetime("TO_TIMESTAMP_LTZ", exp.DataType.Type.TIMESTAMPLTZ),
     316            "TO_TIMESTAMP_NTZ": _build_datetime("TO_TIMESTAMP_NTZ", exp.DataType.Type.TIMESTAMP),
     317            "TO_TIMESTAMP_TZ": _build_datetime("TO_TIMESTAMP_TZ", exp.DataType.Type.TIMESTAMPTZ),
     318            "TO_VARCHAR": exp.ToChar.from_arg_list,
     319            "ZEROIFNULL": _build_if_from_zeroifnull,
     320        }
     321
     322        FUNCTION_PARSERS = {
     323            **parser.Parser.FUNCTION_PARSERS,
     324            "DATE_PART": lambda self: self._parse_date_part(),
     325            "OBJECT_CONSTRUCT_KEEP_NULL": lambda self: self._parse_json_object(),
     326        }
     327        FUNCTION_PARSERS.pop("TRIM")
     328
     329        TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME}
     330
     331        RANGE_PARSERS = {
     332            **parser.Parser.RANGE_PARSERS,
     333            TokenType.LIKE_ANY: parser.binary_range_parser(exp.LikeAny),
     334            TokenType.ILIKE_ANY: parser.binary_range_parser(exp.ILikeAny),
     335        }
     336
     337        ALTER_PARSERS = {
     338            **parser.Parser.ALTER_PARSERS,
     339            "UNSET": lambda self: self.expression(
     340                exp.Set,
     341                tag=self._match_text_seq("TAG"),
     342                expressions=self._parse_csv(self._parse_id_var),
     343                unset=True,
     344            ),
     345            "SWAP": lambda self: self._parse_alter_table_swap(),
     346        }
     347
     348        STATEMENT_PARSERS = {
     349            **parser.Parser.STATEMENT_PARSERS,
     350            TokenType.SHOW: lambda self: self._parse_show(),
     351        }
     352
     353        PROPERTY_PARSERS = {
     354            **parser.Parser.PROPERTY_PARSERS,
     355            "LOCATION": lambda self: self._parse_location_property(),
     356        }
     357
     358        TYPE_CONVERTERS = {
     359            # https://docs.snowflake.com/en/sql-reference/data-types-numeric#number
     360            exp.DataType.Type.DECIMAL: build_default_decimal_type(precision=38, scale=0),
     361        }
     362
     363        SHOW_PARSERS = {
     364            "SCHEMAS": _show_parser("SCHEMAS"),
     365            "TERSE SCHEMAS": _show_parser("SCHEMAS"),
     366            "OBJECTS": _show_parser("OBJECTS"),
     367            "TERSE OBJECTS": _show_parser("OBJECTS"),
     368            "TABLES": _show_parser("TABLES"),
     369            "TERSE TABLES": _show_parser("TABLES"),
     370            "VIEWS": _show_parser("VIEWS"),
     371            "TERSE VIEWS": _show_parser("VIEWS"),
     372            "PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
     373            "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
     374            "IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
     375            "TERSE IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
     376            "UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
     377            "TERSE UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
     378            "SEQUENCES": _show_parser("SEQUENCES"),
     379            "TERSE SEQUENCES": _show_parser("SEQUENCES"),
     380            "COLUMNS": _show_parser("COLUMNS"),
     381            "USERS": _show_parser("USERS"),
     382            "TERSE USERS": _show_parser("USERS"),
     383        }
     384
     385        CONSTRAINT_PARSERS = {
     386            **parser.Parser.CONSTRAINT_PARSERS,
     387            "WITH": lambda self: self._parse_with_constraint(),
     388            "MASKING": lambda self: self._parse_with_constraint(),
     389            "PROJECTION": lambda self: self._parse_with_constraint(),
     390            "TAG": lambda self: self._parse_with_constraint(),
     391        }
     392
     393        STAGED_FILE_SINGLE_TOKENS = {
     394            TokenType.DOT,
     395            TokenType.MOD,
     396            TokenType.SLASH,
     397        }
     398
     399        FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"]
     400
     401        SCHEMA_KINDS = {"OBJECTS", "TABLES", "VIEWS", "SEQUENCES", "UNIQUE KEYS", "IMPORTED KEYS"}
     402
     403        NON_TABLE_CREATABLES = {"STORAGE INTEGRATION", "TAG", "WAREHOUSE", "STREAMLIT"}
     404
     405        LAMBDAS = {
     406            **parser.Parser.LAMBDAS,
     407            TokenType.ARROW: lambda self, expressions: self.expression(
     408                exp.Lambda,
     409                this=self._replace_lambda(
     410                    self._parse_assignment(),
     411                    expressions,
     412                ),
     413                expressions=[e.this if isinstance(e, exp.Cast) else e for e in expressions],
     414            ),
     415        }
     416
     417        def _parse_with_constraint(self) -> t.Optional[exp.Expression]:
     418            if self._prev.token_type != TokenType.WITH:
     419                self._retreat(self._index - 1)
     420
     421            if self._match_text_seq("MASKING", "POLICY"):
     422                policy = self._parse_column()
     423                return self.expression(
     424                    exp.MaskingPolicyColumnConstraint,
     425                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
     426                    expressions=self._match(TokenType.USING)
     427                    and self._parse_wrapped_csv(self._parse_id_var),
     428                )
     429            if self._match_text_seq("PROJECTION", "POLICY"):
     430                policy = self._parse_column()
     431                return self.expression(
     432                    exp.ProjectionPolicyColumnConstraint,
     433                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
     434                )
     435            if self._match(TokenType.TAG):
     436                return self.expression(
     437                    exp.TagColumnConstraint,
     438                    expressions=self._parse_wrapped_csv(self._parse_property),
     439                )
     440
     441            return None
     442
     443        def _parse_create(self) -> exp.Create | exp.Command:
     444            expression = super()._parse_create()
     445            if isinstance(expression, exp.Create) and expression.kind in self.NON_TABLE_CREATABLES:
     446                # Replace the Table node with the enclosed Identifier
     447                expression.this.replace(expression.this.this)
     448
     449            return expression
     450
     451        # https://docs.snowflake.com/en/sql-reference/functions/date_part.html
     452        # https://docs.snowflake.com/en/sql-reference/functions-date-time.html#label-supported-date-time-parts
     453        def _parse_date_part(self: Snowflake.Parser) -> t.Optional[exp.Expression]:
     454            this = self._parse_var() or self._parse_type()
     455
     456            if not this:
     457                return None
     458
     459            self._match(TokenType.COMMA)
     460            expression = self._parse_bitwise()
     461            this = map_date_part(this)
     462            name = this.name.upper()
     463
     464            if name.startswith("EPOCH"):
     465                if name == "EPOCH_MILLISECOND":
     466                    scale = 10**3
     467                elif name == "EPOCH_MICROSECOND":
     468                    scale = 10**6
     469                elif name == "EPOCH_NANOSECOND":
     470                    scale = 10**9
     471                else:
     472                    scale = None
     473
     474                ts = self.expression(exp.Cast, this=expression, to=exp.DataType.build("TIMESTAMP"))
     475                to_unix: exp.Expression = self.expression(exp.TimeToUnix, this=ts)
     476
     477                if scale:
     478                    to_unix = exp.Mul(this=to_unix, expression=exp.Literal.number(scale))
     479
     480                return to_unix
     481
     482            return self.expression(exp.Extract, this=this, expression=expression)
     483
     484        def _parse_bracket_key_value(self, is_map: bool = False) -> t.Optional[exp.Expression]:
     485            if is_map:
     486                # Keys are strings in Snowflake's objects, see also:
     487                # - https://docs.snowflake.com/en/sql-reference/data-types-semistructured
     488                # - https://docs.snowflake.com/en/sql-reference/functions/object_construct
     489                return self._parse_slice(self._parse_string())
     490
     491            return self._parse_slice(self._parse_alias(self._parse_assignment(), explicit=True))
     492
     493        def _parse_lateral(self) -> t.Optional[exp.Lateral]:
     494            lateral = super()._parse_lateral()
     495            if not lateral:
     496                return lateral
     497
     498            if isinstance(lateral.this, exp.Explode):
     499                table_alias = lateral.args.get("alias")
     500                columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS]
     501                if table_alias and not table_alias.args.get("columns"):
     502                    table_alias.set("columns", columns)
     503                elif not table_alias:
     504                    exp.alias_(lateral, "_flattened", table=columns, copy=False)
     505
     506            return lateral
     507
     508        def _parse_table_parts(
     509            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
     510        ) -> exp.Table:
     511            # https://docs.snowflake.com/en/user-guide/querying-stage
     512            if self._match(TokenType.STRING, advance=False):
     513                table = self._parse_string()
     514            elif self._match_text_seq("@", advance=False):
     515                table = self._parse_location_path()
     516            else:
     517                table = None
     518
     519            if table:
     520                file_format = None
     521                pattern = None
     522
     523                wrapped = self._match(TokenType.L_PAREN)
     524                while self._curr and wrapped and not self._match(TokenType.R_PAREN):
     525                    if self._match_text_seq("FILE_FORMAT", "=>"):
     526                        file_format = self._parse_string() or super()._parse_table_parts(
     527                            is_db_reference=is_db_reference
     528                        )
     529                    elif self._match_text_seq("PATTERN", "=>"):
     530                        pattern = self._parse_string()
     531                    else:
     532                        break
     533
     534                    self._match(TokenType.COMMA)
     535
     536                table = self.expression(exp.Table, this=table, format=file_format, pattern=pattern)
     537            else:
     538                table = super()._parse_table_parts(schema=schema, is_db_reference=is_db_reference)
     539
     540            return table
     541
     542        def _parse_id_var(
     543            self,
     544            any_token: bool = True,
     545            tokens: t.Optional[t.Collection[TokenType]] = None,
     546        ) -> t.Optional[exp.Expression]:
     547            if self._match_text_seq("IDENTIFIER", "("):
     548                identifier = (
     549                    super()._parse_id_var(any_token=any_token, tokens=tokens)
     550                    or self._parse_string()
     551                )
     552                self._match_r_paren()
     553                return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier])
     554
     555            return super()._parse_id_var(any_token=any_token, tokens=tokens)
     556
     557        def _parse_show_snowflake(self, this: str) -> exp.Show:
     558            scope = None
     559            scope_kind = None
     560
     561            # will identity SHOW TERSE SCHEMAS but not SHOW TERSE PRIMARY KEYS
     562            # which is syntactically valid but has no effect on the output
     563            terse = self._tokens[self._index - 2].text.upper() == "TERSE"
     564
     565            history = self._match_text_seq("HISTORY")
     566
     567            like = self._parse_string() if self._match(TokenType.LIKE) else None
     568
     569            if self._match(TokenType.IN):
     570                if self._match_text_seq("ACCOUNT"):
     571                    scope_kind = "ACCOUNT"
     572                elif self._match_set(self.DB_CREATABLES):
     573                    scope_kind = self._prev.text.upper()
     574                    if self._curr:
     575                        scope = self._parse_table_parts()
     576                elif self._curr:
     577                    scope_kind = "SCHEMA" if this in self.SCHEMA_KINDS else "TABLE"
     578                    scope = self._parse_table_parts()
     579
     580            return self.expression(
     581                exp.Show,
     582                **{
     583                    "terse": terse,
     584                    "this": this,
     585                    "history": history,
     586                    "like": like,
     587                    "scope": scope,
     588                    "scope_kind": scope_kind,
     589                    "starts_with": self._match_text_seq("STARTS", "WITH") and self._parse_string(),
     590                    "limit": self._parse_limit(),
     591                    "from": self._parse_string() if self._match(TokenType.FROM) else None,
     592                },
     593            )
     594
     595        def _parse_alter_table_swap(self) -> exp.SwapTable:
     596            self._match_text_seq("WITH")
     597            return self.expression(exp.SwapTable, this=self._parse_table(schema=True))
     598
     599        def _parse_location_property(self) -> exp.LocationProperty:
     600            self._match(TokenType.EQ)
     601            return self.expression(exp.LocationProperty, this=self._parse_location_path())
     602
     603        def _parse_file_location(self) -> t.Optional[exp.Expression]:
     604            # Parse either a subquery or a staged file
     605            return (
     606                self._parse_select(table=True, parse_subquery_alias=False)
     607                if self._match(TokenType.L_PAREN, advance=False)
     608                else self._parse_table_parts()
     609            )
     610
     611        def _parse_location_path(self) -> exp.Var:
     612            parts = [self._advance_any(ignore_reserved=True)]
     613
     614            # We avoid consuming a comma token because external tables like @foo and @bar
     615            # can be joined in a query with a comma separator, as well as closing paren
     616            # in case of subqueries
     617            while self._is_connected() and not self._match_set(
     618                (TokenType.COMMA, TokenType.L_PAREN, TokenType.R_PAREN), advance=False
     619            ):
     620                parts.append(self._advance_any(ignore_reserved=True))
     621
     622            return exp.var("".join(part.text for part in parts if part))
     623
     624        def _parse_lambda_arg(self) -> t.Optional[exp.Expression]:
     625            this = super()._parse_lambda_arg()
     626
     627            if not this:
     628                return this
     629
     630            typ = self._parse_types()
     631
     632            if typ:
     633                return self.expression(exp.Cast, this=this, to=typ)
     634
     635            return this
     636
     637    class Tokenizer(tokens.Tokenizer):
     638        STRING_ESCAPES = ["\\", "'"]
     639        HEX_STRINGS = [("x'", "'"), ("X'", "'")]
     640        RAW_STRINGS = ["$$"]
     641        COMMENTS = ["--", "//", ("/*", "*/")]
     642
     643        KEYWORDS = {
     644            **tokens.Tokenizer.KEYWORDS,
     645            "BYTEINT": TokenType.INT,
     646            "CHAR VARYING": TokenType.VARCHAR,
     647            "CHARACTER VARYING": TokenType.VARCHAR,
     648            "EXCLUDE": TokenType.EXCEPT,
     649            "ILIKE ANY": TokenType.ILIKE_ANY,
     650            "LIKE ANY": TokenType.LIKE_ANY,
     651            "MATCH_CONDITION": TokenType.MATCH_CONDITION,
     652            "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE,
     653            "MINUS": TokenType.EXCEPT,
     654            "NCHAR VARYING": TokenType.VARCHAR,
     655            "PUT": TokenType.COMMAND,
     656            "REMOVE": TokenType.COMMAND,
     657            "RM": TokenType.COMMAND,
     658            "SAMPLE": TokenType.TABLE_SAMPLE,
     659            "SQL_DOUBLE": TokenType.DOUBLE,
     660            "SQL_VARCHAR": TokenType.VARCHAR,
     661            "STORAGE INTEGRATION": TokenType.STORAGE_INTEGRATION,
     662            "TAG": TokenType.TAG,
     663            "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ,
     664            "TOP": TokenType.TOP,
     665            "WAREHOUSE": TokenType.WAREHOUSE,
     666            "STREAMLIT": TokenType.STREAMLIT,
     667        }
     668        KEYWORDS.pop("/*+")
     669
     670        SINGLE_TOKENS = {
     671            **tokens.Tokenizer.SINGLE_TOKENS,
     672            "$": TokenType.PARAMETER,
     673        }
     674
     675        VAR_SINGLE_TOKENS = {"$"}
     676
     677        COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW}
     678
     679    class Generator(generator.Generator):
     680        PARAMETER_TOKEN = "$"
     681        MATCHED_BY_SOURCE = False
     682        SINGLE_STRING_INTERVAL = True
     683        JOIN_HINTS = False
     684        TABLE_HINTS = False
     685        QUERY_HINTS = False
     686        AGGREGATE_FILTER_SUPPORTED = False
     687        SUPPORTS_TABLE_COPY = False
     688        COLLATE_IS_FUNC = True
     689        LIMIT_ONLY_LITERALS = True
     690        JSON_KEY_VALUE_PAIR_SEP = ","
     691        INSERT_OVERWRITE = " OVERWRITE INTO"
     692        STRUCT_DELIMITER = ("(", ")")
     693        COPY_PARAMS_ARE_WRAPPED = False
     694        COPY_PARAMS_EQ_REQUIRED = True
     695        STAR_EXCEPT = "EXCLUDE"
     696
     697        TRANSFORMS = {
     698            **generator.Generator.TRANSFORMS,
     699            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
     700            exp.ArgMax: rename_func("MAX_BY"),
     701            exp.ArgMin: rename_func("MIN_BY"),
     702            exp.Array: inline_array_sql,
     703            exp.ArrayConcat: rename_func("ARRAY_CAT"),
     704            exp.ArrayContains: lambda self, e: self.func("ARRAY_CONTAINS", e.expression, e.this),
     705            exp.AtTimeZone: lambda self, e: self.func(
     706                "CONVERT_TIMEZONE", e.args.get("zone"), e.this
     707            ),
     708            exp.BitwiseXor: rename_func("BITXOR"),
     709            exp.Create: transforms.preprocess([_flatten_structured_types_unless_iceberg]),
     710            exp.DateAdd: date_delta_sql("DATEADD"),
     711            exp.DateDiff: date_delta_sql("DATEDIFF"),
     712            exp.DateStrToDate: datestrtodate_sql,
     713            exp.DayOfMonth: rename_func("DAYOFMONTH"),
     714            exp.DayOfWeek: rename_func("DAYOFWEEK"),
     715            exp.DayOfYear: rename_func("DAYOFYEAR"),
     716            exp.Explode: rename_func("FLATTEN"),
     717            exp.Extract: rename_func("DATE_PART"),
     718            exp.FromTimeZone: lambda self, e: self.func(
     719                "CONVERT_TIMEZONE", e.args.get("zone"), "'UTC'", e.this
     720            ),
     721            exp.GenerateSeries: lambda self, e: self.func(
     722                "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step")
     723            ),
     724            exp.GroupConcat: rename_func("LISTAGG"),
     725            exp.If: if_sql(name="IFF", false_value="NULL"),
     726            exp.JSONExtract: lambda self, e: self.func("GET_PATH", e.this, e.expression),
     727            exp.JSONExtractScalar: lambda self, e: self.func(
     728                "JSON_EXTRACT_PATH_TEXT", e.this, e.expression
     729            ),
     730            exp.JSONObject: lambda self, e: self.func("OBJECT_CONSTRUCT_KEEP_NULL", *e.expressions),
     731            exp.JSONPathRoot: lambda *_: "",
     732            exp.LogicalAnd: rename_func("BOOLAND_AGG"),
     733            exp.LogicalOr: rename_func("BOOLOR_AGG"),
     734            exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     735            exp.Max: max_or_greatest,
     736            exp.Min: min_or_least,
     737            exp.ParseJSON: lambda self, e: self.func(
     738                "TRY_PARSE_JSON" if e.args.get("safe") else "PARSE_JSON", e.this
     739            ),
     740            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
     741            exp.PercentileCont: transforms.preprocess(
     742                [transforms.add_within_group_for_percentiles]
     743            ),
     744            exp.PercentileDisc: transforms.preprocess(
     745                [transforms.add_within_group_for_percentiles]
     746            ),
     747            exp.Pivot: transforms.preprocess([_unqualify_unpivot_columns]),
     748            exp.RegexpILike: _regexpilike_sql,
     749            exp.Rand: rename_func("RANDOM"),
     750            exp.Select: transforms.preprocess(
     751                [
     752                    transforms.eliminate_distinct_on,
     753                    transforms.explode_to_unnest(),
     754                    transforms.eliminate_semi_and_anti_joins,
     755                ]
     756            ),
     757            exp.SHA: rename_func("SHA1"),
     758            exp.StarMap: rename_func("OBJECT_CONSTRUCT"),
     759            exp.StartsWith: rename_func("STARTSWITH"),
     760            exp.StrPosition: lambda self, e: self.func(
     761                "POSITION", e.args.get("substr"), e.this, e.args.get("position")
     762            ),
     763            exp.StrToTime: lambda self, e: self.func("TO_TIMESTAMP", e.this, self.format_time(e)),
     764            exp.Stuff: rename_func("INSERT"),
     765            exp.TimeAdd: date_delta_sql("TIMEADD"),
     766            exp.TimestampDiff: lambda self, e: self.func(
     767                "TIMESTAMPDIFF", e.unit, e.expression, e.this
     768            ),
     769            exp.TimestampTrunc: timestamptrunc_sql(),
     770            exp.TimeStrToTime: timestrtotime_sql,
     771            exp.TimeToStr: lambda self, e: self.func(
     772                "TO_CHAR", exp.cast(e.this, exp.DataType.Type.TIMESTAMP), self.format_time(e)
     773            ),
     774            exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})",
     775            exp.ToArray: rename_func("TO_ARRAY"),
     776            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
     777            exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression),
     778            exp.TsOrDsAdd: date_delta_sql("DATEADD", cast=True),
     779            exp.TsOrDsDiff: date_delta_sql("DATEDIFF"),
     780            exp.TsOrDsToDate: lambda self, e: self.func(
     781                "TRY_TO_DATE" if e.args.get("safe") else "TO_DATE", e.this, self.format_time(e)
     782            ),
     783            exp.UnixToTime: rename_func("TO_TIMESTAMP"),
     784            exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     785            exp.WeekOfYear: rename_func("WEEKOFYEAR"),
     786            exp.Xor: rename_func("BOOLXOR"),
     787        }
     788
     789        SUPPORTED_JSON_PATH_PARTS = {
     790            exp.JSONPathKey,
     791            exp.JSONPathRoot,
     792            exp.JSONPathSubscript,
     793        }
     794
     795        TYPE_MAPPING = {
     796            **generator.Generator.TYPE_MAPPING,
     797            exp.DataType.Type.NESTED: "OBJECT",
     798            exp.DataType.Type.STRUCT: "OBJECT",
     799        }
     800
     801        PROPERTIES_LOCATION = {
     802            **generator.Generator.PROPERTIES_LOCATION,
     803            exp.SetProperty: exp.Properties.Location.UNSUPPORTED,
     804            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
     805        }
     806
     807        UNSUPPORTED_VALUES_EXPRESSIONS = {
     808            exp.Map,
     809            exp.StarMap,
     810            exp.Struct,
     811            exp.VarMap,
     812        }
     813
     814        def with_properties(self, properties: exp.Properties) -> str:
     815            return self.properties(properties, wrapped=False, prefix=self.sep(""), sep=" ")
     816
     817        def values_sql(self, expression: exp.Values, values_as_table: bool = True) -> str:
     818            if expression.find(*self.UNSUPPORTED_VALUES_EXPRESSIONS):
     819                values_as_table = False
     820
     821            return super().values_sql(expression, values_as_table=values_as_table)
     822
     823        def datatype_sql(self, expression: exp.DataType) -> str:
     824            expressions = expression.expressions
     825            if (
     826                expressions
     827                and expression.is_type(*exp.DataType.STRUCT_TYPES)
     828                and any(isinstance(field_type, exp.DataType) for field_type in expressions)
     829            ):
     830                # The correct syntax is OBJECT [ (<key> <value_type [NOT NULL] [, ...]) ]
     831                return "OBJECT"
     832
     833            return super().datatype_sql(expression)
     834
     835        def tonumber_sql(self, expression: exp.ToNumber) -> str:
     836            return self.func(
     837                "TO_NUMBER",
     838                expression.this,
     839                expression.args.get("format"),
     840                expression.args.get("precision"),
     841                expression.args.get("scale"),
     842            )
     843
     844        def timestampfromparts_sql(self, expression: exp.TimestampFromParts) -> str:
     845            milli = expression.args.get("milli")
     846            if milli is not None:
     847                milli_to_nano = milli.pop() * exp.Literal.number(1000000)
     848                expression.set("nano", milli_to_nano)
     849
     850            return rename_func("TIMESTAMP_FROM_PARTS")(self, expression)
     851
     852        def trycast_sql(self, expression: exp.TryCast) -> str:
     853            value = expression.this
     854
     855            if value.type is None:
     856                from sqlglot.optimizer.annotate_types import annotate_types
     857
     858                value = annotate_types(value)
     859
     860            if value.is_type(*exp.DataType.TEXT_TYPES, exp.DataType.Type.UNKNOWN):
     861                return super().trycast_sql(expression)
     862
     863            # TRY_CAST only works for string values in Snowflake
     864            return self.cast_sql(expression)
     865
     866        def log_sql(self, expression: exp.Log) -> str:
     867            if not expression.expression:
     868                return self.func("LN", expression.this)
     869
     870            return super().log_sql(expression)
     871
     872        def unnest_sql(self, expression: exp.Unnest) -> str:
     873            unnest_alias = expression.args.get("alias")
     874            offset = expression.args.get("offset")
     875
     876            columns = [
     877                exp.to_identifier("seq"),
     878                exp.to_identifier("key"),
     879                exp.to_identifier("path"),
     880                offset.pop() if isinstance(offset, exp.Expression) else exp.to_identifier("index"),
     881                seq_get(unnest_alias.columns if unnest_alias else [], 0)
     882                or exp.to_identifier("value"),
     883                exp.to_identifier("this"),
     884            ]
     885
     886            if unnest_alias:
     887                unnest_alias.set("columns", columns)
     888            else:
     889                unnest_alias = exp.TableAlias(this="_u", columns=columns)
     890
     891            explode = f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))"
     892            alias = self.sql(unnest_alias)
     893            alias = f" AS {alias}" if alias else ""
     894            return f"{explode}{alias}"
     895
     896        def show_sql(self, expression: exp.Show) -> str:
     897            terse = "TERSE " if expression.args.get("terse") else ""
     898            history = " HISTORY" if expression.args.get("history") else ""
     899            like = self.sql(expression, "like")
     900            like = f" LIKE {like}" if like else ""
     901
     902            scope = self.sql(expression, "scope")
     903            scope = f" {scope}" if scope else ""
     904
     905            scope_kind = self.sql(expression, "scope_kind")
     906            if scope_kind:
     907                scope_kind = f" IN {scope_kind}"
     908
     909            starts_with = self.sql(expression, "starts_with")
     910            if starts_with:
     911                starts_with = f" STARTS WITH {starts_with}"
     912
     913            limit = self.sql(expression, "limit")
     914
     915            from_ = self.sql(expression, "from")
     916            if from_:
     917                from_ = f" FROM {from_}"
     918
     919            return f"SHOW {terse}{expression.name}{history}{like}{scope_kind}{scope}{starts_with}{limit}{from_}"
     920
     921        def regexpextract_sql(self, expression: exp.RegexpExtract) -> str:
     922            # Other dialects don't support all of the following parameters, so we need to
     923            # generate default values as necessary to ensure the transpilation is correct
     924            group = expression.args.get("group")
     925            parameters = expression.args.get("parameters") or (group and exp.Literal.string("c"))
     926            occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1))
     927            position = expression.args.get("position") or (occurrence and exp.Literal.number(1))
     928
     929            return self.func(
     930                "REGEXP_SUBSTR",
     931                expression.this,
     932                expression.expression,
     933                position,
     934                occurrence,
     935                parameters,
     936                group,
     937            )
     938
     939        def except_op(self, expression: exp.Except) -> str:
     940            if not expression.args.get("distinct"):
     941                self.unsupported("EXCEPT with All is not supported in Snowflake")
     942            return super().except_op(expression)
     943
     944        def intersect_op(self, expression: exp.Intersect) -> str:
     945            if not expression.args.get("distinct"):
     946                self.unsupported("INTERSECT with All is not supported in Snowflake")
     947            return super().intersect_op(expression)
     948
     949        def describe_sql(self, expression: exp.Describe) -> str:
     950            # Default to table if kind is unknown
     951            kind_value = expression.args.get("kind") or "TABLE"
     952            kind = f" {kind_value}" if kind_value else ""
     953            this = f" {self.sql(expression, 'this')}"
     954            expressions = self.expressions(expression, flat=True)
     955            expressions = f" {expressions}" if expressions else ""
     956            return f"DESCRIBE{kind}{this}{expressions}"
     957
     958        def generatedasidentitycolumnconstraint_sql(
     959            self, expression: exp.GeneratedAsIdentityColumnConstraint
     960        ) -> str:
     961            start = expression.args.get("start")
     962            start = f" START {start}" if start else ""
     963            increment = expression.args.get("increment")
     964            increment = f" INCREMENT {increment}" if increment else ""
     965            return f"AUTOINCREMENT{start}{increment}"
     966
     967        def swaptable_sql(self, expression: exp.SwapTable) -> str:
     968            this = self.sql(expression, "this")
     969            return f"SWAP WITH {this}"
     970
     971        def cluster_sql(self, expression: exp.Cluster) -> str:
     972            return f"CLUSTER BY ({self.expressions(expression, flat=True)})"
     973
     974        def struct_sql(self, expression: exp.Struct) -> str:
     975            keys = []
     976            values = []
     977
     978            for i, e in enumerate(expression.expressions):
     979                if isinstance(e, exp.PropertyEQ):
     980                    keys.append(
     981                        exp.Literal.string(e.name) if isinstance(e.this, exp.Identifier) else e.this
     982                    )
     983                    values.append(e.expression)
     984                else:
     985                    keys.append(exp.Literal.string(f"_{i}"))
     986                    values.append(e)
     987
     988            return self.func("OBJECT_CONSTRUCT", *flatten(zip(keys, values)))
     989
     990        def approxquantile_sql(self, expression: exp.ApproxQuantile) -> str:
     991            if expression.args.get("weight") or expression.args.get("accuracy"):
     992                self.unsupported(
     993                    "APPROX_PERCENTILE with weight and/or accuracy arguments are not supported in Snowflake"
     994                )
     995
     996            return self.func("APPROX_PERCENTILE", expression.this, expression.args.get("quantile"))
     997
     998        def alterset_sql(self, expression: exp.AlterSet) -> str:
     999            exprs = self.expressions(expression, flat=True)
    1000            exprs = f" {exprs}" if exprs else ""
    1001            file_format = self.expressions(expression, key="file_format", flat=True, sep=" ")
    1002            file_format = f" STAGE_FILE_FORMAT = ({file_format})" if file_format else ""
    1003            copy_options = self.expressions(expression, key="copy_options", flat=True, sep=" ")
    1004            copy_options = f" STAGE_COPY_OPTIONS = ({copy_options})" if copy_options else ""
    1005            tag = self.expressions(expression, key="tag", flat=True)
    1006            tag = f" TAG {tag}" if tag else ""
    1007
    1008            return f"SET{exprs}{file_format}{copy_options}{tag}"

NORMALIZATION_STRATEGY = <NormalizationStrategy.UPPERCASE: 'UPPERCASE'>

Specifies the strategy according to which identifiers should be normalized.

NULL_ORDERING = 'nulls_are_large'

Default `NULL` ordering method to use if not explicitly set. Possible values: `"nulls_are_small"`, `"nulls_are_large"`, `"nulls_are_last"`

TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'"
SUPPORTS_USER_DEFINED_TYPES = False

Whether user-defined data types are supported.

SUPPORTS_SEMI_ANTI_JOIN = False

Whether `SEMI` or `ANTI` joins are supported.

PREFER_CTE_ALIAS_COLUMN = True

Some dialects, such as Snowflake, allow you to reference a CTE column alias in the HAVING clause of the CTE. This flag will cause the CTE alias columns to override any projection aliases in the subquery.

For example, WITH y(c) AS ( SELECT SUM(a) FROM (SELECT 1 a) AS x HAVING c > 0 ) SELECT c FROM y;

    will be rewritten as

    WITH y(c) AS (
        SELECT SUM(a) AS c FROM (SELECT 1 AS a) AS x HAVING c > 0
    ) SELECT c FROM y;

TABLESAMPLE_SIZE_IS_PERCENT = True

Whether a size in the table sample clause represents percentage.

COPY_PARAMS_ARE_CSV = False

Whether COPY statement parameters are separated by comma or whitespace

TIME_MAPPING: Dict[str, str] = {'YYYY': '%Y', 'yyyy': '%Y', 'YY': '%y', 'yy': '%y', 'MMMM': '%B', 'mmmm': '%B', 'MON': '%b', 'mon': '%b', 'MM': '%m', 'mm': '%m', 'DD': '%d', 'dd': '%-d', 'DY': '%a', 'dy': '%w', 'HH24': '%H', 'hh24': '%H', 'HH12': '%I', 'hh12': '%I', 'MI': '%M', 'mi': '%M', 'SS': '%S', 'ss': '%S', 'FF': '%f', 'ff': '%f', 'FF6': '%f', 'ff6': '%f'}

Associates this dialect's time formats with their equivalent Python `strftime` formats.

def quote_identifier(self, expression: ~E, identify: bool = True) -> ~E: View Source

    230    def quote_identifier(self, expression: E, identify: bool = True) -> E:
    231        # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an
    232        # unquoted DUAL keyword in a special way and does not map it to a user-defined table
    233        if (
    234            isinstance(expression, exp.Identifier)
    235            and isinstance(expression.parent, exp.Table)
    236            and expression.name.lower() == "dual"
    237        ):
    238            return expression  # type: ignore
    239
    240        return super().quote_identifier(expression, identify=identify)

Adds quotes to a given identifier.

###### Arguments:

- expression: The expression of interest. If it's not an `Identifier`, this method is a no-op.
- identify: If set to `False`, the quotes will only be added if the identifier is deemed "unsafe", with respect to its characters and this dialect's normalization strategy.

SUPPORTS_COLUMN_JOIN_MARKS = False

Whether the old-style outer join (+) syntax is supported.

UNESCAPED_SEQUENCES: Dict[str, str] = {'\\a': '\x07', '\\b': '\x08', '\\f': '\x0c', '\\n': '\n', '\\r': '\r', '\\t': '\t', '\\v': '\x0b', '\\\\': '\\'}

Mapping of an escaped sequence (`\n`) to its unescaped version (`` ).

tokenizer_class = <class 'Snowflake.Tokenizer'>
jsonpath_tokenizer_class = <class 'sqlglot.tokens.JSONPathTokenizer'>
parser_class = <class 'Snowflake.Parser'>
generator_class = <class 'Snowflake.Generator'>
TIME_TRIE: Dict = {'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
FORMAT_TRIE: Dict = {'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
INVERSE_TIME_MAPPING: Dict[str, str] = {'%Y': 'yyyy', '%y': 'yy', '%B': 'mmmm', '%b': 'mon', '%m': 'mm', '%d': 'DD', '%-d': 'dd', '%a': 'DY', '%w': 'dy', '%H': 'hh24', '%I': 'hh12', '%M': 'mi', '%S': 'ss', '%f': 'ff6'}
INVERSE_TIME_TRIE: Dict = {'%': {'Y': {0: True}, 'y': {0: True}, 'B': {0: True}, 'b': {0: True}, 'm': {0: True}, 'd': {0: True}, '-': {'d': {0: True}}, 'a': {0: True}, 'w': {0: True}, 'H': {0: True}, 'I': {0: True}, 'M': {0: True}, 'S': {0: True}, 'f': {0: True}}}
INVERSE_FORMAT_MAPPING: Dict[str, str] = {}
INVERSE_FORMAT_TRIE: Dict = {}
ESCAPED_SEQUENCES: Dict[str, str] = {'\x07': '\\a', '\x08': '\\b', '\x0c': '\\f', '\n': '\\n', '\r': '\\r', '\t': '\\t', '\x0b': '\\v', '\\': '\\\\'}
QUOTE_START = "'"
QUOTE_END = "'"
IDENTIFIER_START = '"'
IDENTIFIER_END = '"'
BIT_START: Optional[str] = None
BIT_END: Optional[str] = None
HEX_START: Optional[str] = "x'"
HEX_END: Optional[str] = "'"
BYTE_START: Optional[str] = None
BYTE_END: Optional[str] = None
UNICODE_START: Optional[str] = None
UNICODE_END: Optional[str] = None

##### Inherited Members

sqlglot.dialects.dialect.Dialect
  Dialect
  INDEX_OFFSET
  WEEK_OFFSET
  UNNEST_COLUMN_ONLY
  ALIAS_POST_TABLESAMPLE
  IDENTIFIERS_CAN_START_WITH_DIGIT
  DPIPE_IS_STRING_CONCAT
  STRICT_STRING_CONCAT
  NORMALIZE_FUNCTIONS
  LOG_BASE_FIRST
  TYPED_DIVISION
  SAFE_DIVISION
  CONCAT_COALESCE
  HEX_LOWERCASE
  DATE_FORMAT
  DATEINT_FORMAT
  FORMAT_MAPPING
  PSEUDOCOLUMNS
  FORCE_EARLY_ALIAS_REF_EXPANSION
  EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY
  SUPPORTS_ORDER_BY_ALL
  DATE_PART_MAPPING
  TYPE_TO_EXPRESSIONS
  ANNOTATORS
  get_or_raise
  format_time
  settings
  normalize_identifier
  case_sensitive
  can_identify
  to_json_path
  parse
  parse_into
  generate
  transpile
  tokenize
  tokenizer
  jsonpath_tokenizer
  parser
  generator

class Snowflake.Parser(sqlglot.parser.Parser): View Source

    242    class Parser(parser.Parser):
    243        IDENTIFY_PIVOT_STRINGS = True
    244        DEFAULT_SAMPLING_METHOD = "BERNOULLI"
    245        COLON_IS_VARIANT_EXTRACT = True
    246
    247        ID_VAR_TOKENS = {
    248            *parser.Parser.ID_VAR_TOKENS,
    249            TokenType.MATCH_CONDITION,
    250        }
    251
    252        TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW}
    253        TABLE_ALIAS_TOKENS.discard(TokenType.MATCH_CONDITION)
    254
    255        FUNCTIONS = {
    256            **parser.Parser.FUNCTIONS,
    257            "APPROX_PERCENTILE": exp.ApproxQuantile.from_arg_list,
    258            "ARRAYAGG": exp.ArrayAgg.from_arg_list,
    259            "ARRAY_CONSTRUCT": exp.Array.from_arg_list,
    260            "ARRAY_CONTAINS": lambda args: exp.ArrayContains(
    261                this=seq_get(args, 1), expression=seq_get(args, 0)
    262            ),
    263            "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries(
    264                # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive
    265                start=seq_get(args, 0),
    266                end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)),
    267                step=seq_get(args, 2),
    268            ),
    269            "BITXOR": binary_from_function(exp.BitwiseXor),
    270            "BIT_XOR": binary_from_function(exp.BitwiseXor),
    271            "BOOLXOR": binary_from_function(exp.Xor),
    272            "CONVERT_TIMEZONE": _build_convert_timezone,
    273            "DATE": _build_datetime("DATE", exp.DataType.Type.DATE),
    274            "DATE_TRUNC": _date_trunc_to_time,
    275            "DATEADD": _build_date_time_add(exp.DateAdd),
    276            "DATEDIFF": _build_datediff,
    277            "DIV0": _build_if_from_div0,
    278            "FLATTEN": exp.Explode.from_arg_list,
    279            "GET_PATH": lambda args, dialect: exp.JSONExtract(
    280                this=seq_get(args, 0), expression=dialect.to_json_path(seq_get(args, 1))
    281            ),
    282            "IFF": exp.If.from_arg_list,
    283            "LAST_DAY": lambda args: exp.LastDay(
    284                this=seq_get(args, 0), unit=map_date_part(seq_get(args, 1))
    285            ),
    286            "LEN": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    287            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    288            "LISTAGG": exp.GroupConcat.from_arg_list,
    289            "MEDIAN": lambda args: exp.PercentileCont(
    290                this=seq_get(args, 0), expression=exp.Literal.number(0.5)
    291            ),
    292            "NULLIFZERO": _build_if_from_nullifzero,
    293            "OBJECT_CONSTRUCT": _build_object_construct,
    294            "REGEXP_REPLACE": _build_regexp_replace,
    295            "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list,
    296            "RLIKE": exp.RegexpLike.from_arg_list,
    297            "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)),
    298            "TIMEADD": _build_date_time_add(exp.TimeAdd),
    299            "TIMEDIFF": _build_datediff,
    300            "TIMESTAMPADD": _build_date_time_add(exp.DateAdd),
    301            "TIMESTAMPDIFF": _build_datediff,
    302            "TIMESTAMPFROMPARTS": build_timestamp_from_parts,
    303            "TIMESTAMP_FROM_PARTS": build_timestamp_from_parts,
    304            "TRY_PARSE_JSON": lambda args: exp.ParseJSON(this=seq_get(args, 0), safe=True),
    305            "TRY_TO_DATE": _build_datetime("TRY_TO_DATE", exp.DataType.Type.DATE, safe=True),
    306            "TO_DATE": _build_datetime("TO_DATE", exp.DataType.Type.DATE),
    307            "TO_NUMBER": lambda args: exp.ToNumber(
    308                this=seq_get(args, 0),
    309                format=seq_get(args, 1),
    310                precision=seq_get(args, 2),
    311                scale=seq_get(args, 3),
    312            ),
    313            "TO_TIME": _build_datetime("TO_TIME", exp.DataType.Type.TIME),
    314            "TO_TIMESTAMP": _build_datetime("TO_TIMESTAMP", exp.DataType.Type.TIMESTAMP),
    315            "TO_TIMESTAMP_LTZ": _build_datetime("TO_TIMESTAMP_LTZ", exp.DataType.Type.TIMESTAMPLTZ),
    316            "TO_TIMESTAMP_NTZ": _build_datetime("TO_TIMESTAMP_NTZ", exp.DataType.Type.TIMESTAMP),
    317            "TO_TIMESTAMP_TZ": _build_datetime("TO_TIMESTAMP_TZ", exp.DataType.Type.TIMESTAMPTZ),
    318            "TO_VARCHAR": exp.ToChar.from_arg_list,
    319            "ZEROIFNULL": _build_if_from_zeroifnull,
    320        }
    321
    322        FUNCTION_PARSERS = {
    323            **parser.Parser.FUNCTION_PARSERS,
    324            "DATE_PART": lambda self: self._parse_date_part(),
    325            "OBJECT_CONSTRUCT_KEEP_NULL": lambda self: self._parse_json_object(),
    326        }
    327        FUNCTION_PARSERS.pop("TRIM")
    328
    329        TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME}
    330
    331        RANGE_PARSERS = {
    332            **parser.Parser.RANGE_PARSERS,
    333            TokenType.LIKE_ANY: parser.binary_range_parser(exp.LikeAny),
    334            TokenType.ILIKE_ANY: parser.binary_range_parser(exp.ILikeAny),
    335        }
    336
    337        ALTER_PARSERS = {
    338            **parser.Parser.ALTER_PARSERS,
    339            "UNSET": lambda self: self.expression(
    340                exp.Set,
    341                tag=self._match_text_seq("TAG"),
    342                expressions=self._parse_csv(self._parse_id_var),
    343                unset=True,
    344            ),
    345            "SWAP": lambda self: self._parse_alter_table_swap(),
    346        }
    347
    348        STATEMENT_PARSERS = {
    349            **parser.Parser.STATEMENT_PARSERS,
    350            TokenType.SHOW: lambda self: self._parse_show(),
    351        }
    352
    353        PROPERTY_PARSERS = {
    354            **parser.Parser.PROPERTY_PARSERS,
    355            "LOCATION": lambda self: self._parse_location_property(),
    356        }
    357
    358        TYPE_CONVERTERS = {
    359            # https://docs.snowflake.com/en/sql-reference/data-types-numeric#number
    360            exp.DataType.Type.DECIMAL: build_default_decimal_type(precision=38, scale=0),
    361        }
    362
    363        SHOW_PARSERS = {
    364            "SCHEMAS": _show_parser("SCHEMAS"),
    365            "TERSE SCHEMAS": _show_parser("SCHEMAS"),
    366            "OBJECTS": _show_parser("OBJECTS"),
    367            "TERSE OBJECTS": _show_parser("OBJECTS"),
    368            "TABLES": _show_parser("TABLES"),
    369            "TERSE TABLES": _show_parser("TABLES"),
    370            "VIEWS": _show_parser("VIEWS"),
    371            "TERSE VIEWS": _show_parser("VIEWS"),
    372            "PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
    373            "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"),
    374            "IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
    375            "TERSE IMPORTED KEYS": _show_parser("IMPORTED KEYS"),
    376            "UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
    377            "TERSE UNIQUE KEYS": _show_parser("UNIQUE KEYS"),
    378            "SEQUENCES": _show_parser("SEQUENCES"),
    379            "TERSE SEQUENCES": _show_parser("SEQUENCES"),
    380            "COLUMNS": _show_parser("COLUMNS"),
    381            "USERS": _show_parser("USERS"),
    382            "TERSE USERS": _show_parser("USERS"),
    383        }
    384
    385        CONSTRAINT_PARSERS = {
    386            **parser.Parser.CONSTRAINT_PARSERS,
    387            "WITH": lambda self: self._parse_with_constraint(),
    388            "MASKING": lambda self: self._parse_with_constraint(),
    389            "PROJECTION": lambda self: self._parse_with_constraint(),
    390            "TAG": lambda self: self._parse_with_constraint(),
    391        }
    392
    393        STAGED_FILE_SINGLE_TOKENS = {
    394            TokenType.DOT,
    395            TokenType.MOD,
    396            TokenType.SLASH,
    397        }
    398
    399        FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"]
    400
    401        SCHEMA_KINDS = {"OBJECTS", "TABLES", "VIEWS", "SEQUENCES", "UNIQUE KEYS", "IMPORTED KEYS"}
    402
    403        NON_TABLE_CREATABLES = {"STORAGE INTEGRATION", "TAG", "WAREHOUSE", "STREAMLIT"}
    404
    405        LAMBDAS = {
    406            **parser.Parser.LAMBDAS,
    407            TokenType.ARROW: lambda self, expressions: self.expression(
    408                exp.Lambda,
    409                this=self._replace_lambda(
    410                    self._parse_assignment(),
    411                    expressions,
    412                ),
    413                expressions=[e.this if isinstance(e, exp.Cast) else e for e in expressions],
    414            ),
    415        }
    416
    417        def _parse_with_constraint(self) -> t.Optional[exp.Expression]:
    418            if self._prev.token_type != TokenType.WITH:
    419                self._retreat(self._index - 1)
    420
    421            if self._match_text_seq("MASKING", "POLICY"):
    422                policy = self._parse_column()
    423                return self.expression(
    424                    exp.MaskingPolicyColumnConstraint,
    425                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
    426                    expressions=self._match(TokenType.USING)
    427                    and self._parse_wrapped_csv(self._parse_id_var),
    428                )
    429            if self._match_text_seq("PROJECTION", "POLICY"):
    430                policy = self._parse_column()
    431                return self.expression(
    432                    exp.ProjectionPolicyColumnConstraint,
    433                    this=policy.to_dot() if isinstance(policy, exp.Column) else policy,
    434                )
    435            if self._match(TokenType.TAG):
    436                return self.expression(
    437                    exp.TagColumnConstraint,
    438                    expressions=self._parse_wrapped_csv(self._parse_property),
    439                )
    440
    441            return None
    442
    443        def _parse_create(self) -> exp.Create | exp.Command:
    444            expression = super()._parse_create()
    445            if isinstance(expression, exp.Create) and expression.kind in self.NON_TABLE_CREATABLES:
    446                # Replace the Table node with the enclosed Identifier
    447                expression.this.replace(expression.this.this)
    448
    449            return expression
    450
    451        # https://docs.snowflake.com/en/sql-reference/functions/date_part.html
    452        # https://docs.snowflake.com/en/sql-reference/functions-date-time.html#label-supported-date-time-parts
    453        def _parse_date_part(self: Snowflake.Parser) -> t.Optional[exp.Expression]:
    454            this = self._parse_var() or self._parse_type()
    455
    456            if not this:
    457                return None
    458
    459            self._match(TokenType.COMMA)
    460            expression = self._parse_bitwise()
    461            this = map_date_part(this)
    462            name = this.name.upper()
    463
    464            if name.startswith("EPOCH"):
    465                if name == "EPOCH_MILLISECOND":
    466                    scale = 10**3
    467                elif name == "EPOCH_MICROSECOND":
    468                    scale = 10**6
    469                elif name == "EPOCH_NANOSECOND":
    470                    scale = 10**9
    471                else:
    472                    scale = None
    473
    474                ts = self.expression(exp.Cast, this=expression, to=exp.DataType.build("TIMESTAMP"))
    475                to_unix: exp.Expression = self.expression(exp.TimeToUnix, this=ts)
    476
    477                if scale:
    478                    to_unix = exp.Mul(this=to_unix, expression=exp.Literal.number(scale))
    479
    480                return to_unix
    481
    482            return self.expression(exp.Extract, this=this, expression=expression)
    483
    484        def _parse_bracket_key_value(self, is_map: bool = False) -> t.Optional[exp.Expression]:
    485            if is_map:
    486                # Keys are strings in Snowflake's objects, see also:
    487                # - https://docs.snowflake.com/en/sql-reference/data-types-semistructured
    488                # - https://docs.snowflake.com/en/sql-reference/functions/object_construct
    489                return self._parse_slice(self._parse_string())
    490
    491            return self._parse_slice(self._parse_alias(self._parse_assignment(), explicit=True))
    492
    493        def _parse_lateral(self) -> t.Optional[exp.Lateral]:
    494            lateral = super()._parse_lateral()
    495            if not lateral:
    496                return lateral
    497
    498            if isinstance(lateral.this, exp.Explode):
    499                table_alias = lateral.args.get("alias")
    500                columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS]
    501                if table_alias and not table_alias.args.get("columns"):
    502                    table_alias.set("columns", columns)
    503                elif not table_alias:
    504                    exp.alias_(lateral, "_flattened", table=columns, copy=False)
    505
    506            return lateral
    507
    508        def _parse_table_parts(
    509            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    510        ) -> exp.Table:
    511            # https://docs.snowflake.com/en/user-guide/querying-stage
    512            if self._match(TokenType.STRING, advance=False):
    513                table = self._parse_string()
    514            elif self._match_text_seq("@", advance=False):
    515                table = self._parse_location_path()
    516            else:
    517                table = None
    518
    519            if table:
    520                file_format = None
    521                pattern = None
    522
    523                wrapped = self._match(TokenType.L_PAREN)
    524                while self._curr and wrapped and not self._match(TokenType.R_PAREN):
    525                    if self._match_text_seq("FILE_FORMAT", "=>"):
    526                        file_format = self._parse_string() or super()._parse_table_parts(
    527                            is_db_reference=is_db_reference
    528                        )
    529                    elif self._match_text_seq("PATTERN", "=>"):
    530                        pattern = self._parse_string()
    531                    else:
    532                        break
    533
    534                    self._match(TokenType.COMMA)
    535
    536                table = self.expression(exp.Table, this=table, format=file_format, pattern=pattern)
    537            else:
    538                table = super()._parse_table_parts(schema=schema, is_db_reference=is_db_reference)
    539
    540            return table
    541
    542        def _parse_id_var(
    543            self,
    544            any_token: bool = True,
    545            tokens: t.Optional[t.Collection[TokenType]] = None,
    546        ) -> t.Optional[exp.Expression]:
    547            if self._match_text_seq("IDENTIFIER", "("):
    548                identifier = (
    549                    super()._parse_id_var(any_token=any_token, tokens=tokens)
    550                    or self._parse_string()
    551                )
    552                self._match_r_paren()
    553                return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier])
    554
    555            return super()._parse_id_var(any_token=any_token, tokens=tokens)
    556
    557        def _parse_show_snowflake(self, this: str) -> exp.Show:
    558            scope = None
    559            scope_kind = None
    560
    561            # will identity SHOW TERSE SCHEMAS but not SHOW TERSE PRIMARY KEYS
    562            # which is syntactically valid but has no effect on the output
    563            terse = self._tokens[self._index - 2].text.upper() == "TERSE"
    564
    565            history = self._match_text_seq("HISTORY")
    566
    567            like = self._parse_string() if self._match(TokenType.LIKE) else None
    568
    569            if self._match(TokenType.IN):
    570                if self._match_text_seq("ACCOUNT"):
    571                    scope_kind = "ACCOUNT"
    572                elif self._match_set(self.DB_CREATABLES):
    573                    scope_kind = self._prev.text.upper()
    574                    if self._curr:
    575                        scope = self._parse_table_parts()
    576                elif self._curr:
    577                    scope_kind = "SCHEMA" if this in self.SCHEMA_KINDS else "TABLE"
    578                    scope = self._parse_table_parts()
    579
    580            return self.expression(
    581                exp.Show,
    582                **{
    583                    "terse": terse,
    584                    "this": this,
    585                    "history": history,
    586                    "like": like,
    587                    "scope": scope,
    588                    "scope_kind": scope_kind,
    589                    "starts_with": self._match_text_seq("STARTS", "WITH") and self._parse_string(),
    590                    "limit": self._parse_limit(),
    591                    "from": self._parse_string() if self._match(TokenType.FROM) else None,
    592                },
    593            )
    594
    595        def _parse_alter_table_swap(self) -> exp.SwapTable:
    596            self._match_text_seq("WITH")
    597            return self.expression(exp.SwapTable, this=self._parse_table(schema=True))
    598
    599        def _parse_location_property(self) -> exp.LocationProperty:
    600            self._match(TokenType.EQ)
    601            return self.expression(exp.LocationProperty, this=self._parse_location_path())
    602
    603        def _parse_file_location(self) -> t.Optional[exp.Expression]:
    604            # Parse either a subquery or a staged file
    605            return (
    606                self._parse_select(table=True, parse_subquery_alias=False)
    607                if self._match(TokenType.L_PAREN, advance=False)
    608                else self._parse_table_parts()
    609            )
    610
    611        def _parse_location_path(self) -> exp.Var:
    612            parts = [self._advance_any(ignore_reserved=True)]
    613
    614            # We avoid consuming a comma token because external tables like @foo and @bar
    615            # can be joined in a query with a comma separator, as well as closing paren
    616            # in case of subqueries
    617            while self._is_connected() and not self._match_set(
    618                (TokenType.COMMA, TokenType.L_PAREN, TokenType.R_PAREN), advance=False
    619            ):
    620                parts.append(self._advance_any(ignore_reserved=True))
    621
    622            return exp.var("".join(part.text for part in parts if part))
    623
    624        def _parse_lambda_arg(self) -> t.Optional[exp.Expression]:
    625            this = super()._parse_lambda_arg()
    626
    627            if not this:
    628                return this
    629
    630            typ = self._parse_types()
    631
    632            if typ:
    633                return self.expression(exp.Cast, this=this, to=typ)
    634
    635            return this

Parser consumes a list of tokens produced by the Tokenizer and produces a parsed syntax tree.

###### Arguments:

- error_level: The desired error level. Default: ErrorLevel.IMMEDIATE
- error_message_context: The amount of context to capture from a query string when displaying the error message (in number of characters). Default: 100
- max_errors: Maximum number of error messages to include in a raised ParseError. This is only relevant if error_level is ErrorLevel.RAISE. Default: 3

IDENTIFY_PIVOT_STRINGS = True
DEFAULT_SAMPLING_METHOD = 'BERNOULLI'
COLON_IS_VARIANT_EXTRACT = True
ID_VAR_TOKENS = {<TokenType.UNNEST: 'UNNEST'>, <TokenType.TEXT: 'TEXT'>, <TokenType.FILTER: 'FILTER'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.ANY: 'ANY'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.FULL: 'FULL'>, <TokenType.LIST: 'LIST'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.TRUE: 'TRUE'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.TAG: 'TAG'>, <TokenType.UINT256: 'UINT256'>, <TokenType.SUPER: 'SUPER'>, <TokenType.RANGE: 'RANGE'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.YEAR: 'YEAR'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.LEFT: 'LEFT'>, <TokenType.IPV6: 'IPV6'>, <TokenType.ASOF: 'ASOF'>, <TokenType.ALL: 'ALL'>, <TokenType.NEXT: 'NEXT'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.TOP: 'TOP'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.JSONB: 'JSONB'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.FUNCTION: 'FUNCTION'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.ROWS: 'ROWS'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.ROW: 'ROW'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.SEMI: 'SEMI'>, <TokenType.IPV4: 'IPV4'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.DELETE: 'DELETE'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.DIV: 'DIV'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.FALSE: 'FALSE'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.USE: 'USE'>, <TokenType.TABLE: 'TABLE'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.SOME: 'SOME'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.FIRST: 'FIRST'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.CASE: 'CASE'>, <TokenType.INT: 'INT'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.ASC: 'ASC'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.NESTED: 'NESTED'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.INT128: 'INT128'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.FINAL: 'FINAL'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.CACHE: 'CACHE'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.NAME: 'NAME'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.NULL: 'NULL'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.COPY: 'COPY'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.INET: 'INET'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.VAR: 'VAR'>, <TokenType.BINARY: 'BINARY'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.NATURAL: 'NATURAL'>, <TokenType.SHOW: 'SHOW'>, <TokenType.DATE: 'DATE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.MATCH_CONDITION: 'MATCH_CONDITION'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.VIEW: 'VIEW'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>, <TokenType.XML: 'XML'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.MAP: 'MAP'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.DATE32: 'DATE32'>, <TokenType.DESC: 'DESC'>, <TokenType.ENUM: 'ENUM'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.MERGE: 'MERGE'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.WINDOW: 'WINDOW'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.TIME: 'TIME'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.CHAR: 'CHAR'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.IS: 'IS'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.MODEL: 'MODEL'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.MONEY: 'MONEY'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.KEEP: 'KEEP'>, <TokenType.INDEX: 'INDEX'>, <TokenType.UINT128: 'UINT128'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.JSON: 'JSON'>, <TokenType.SET: 'SET'>, <TokenType.RIGHT: 'RIGHT'>, <TokenType.BIT: 'BIT'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.LOAD: 'LOAD'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.END: 'END'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.UINT: 'UINT'>, <TokenType.KILL: 'KILL'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.UUID: 'UUID'>, <TokenType.APPLY: 'APPLY'>, <TokenType.INT256: 'INT256'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.OFFSET: 'OFFSET'>, <TokenType.ANTI: 'ANTI'>}
TABLE_ALIAS_TOKENS = {<TokenType.UNNEST: 'UNNEST'>, <TokenType.TEXT: 'TEXT'>, <TokenType.FILTER: 'FILTER'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.ANY: 'ANY'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.LIST: 'LIST'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.TRUE: 'TRUE'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.TAG: 'TAG'>, <TokenType.UINT256: 'UINT256'>, <TokenType.SUPER: 'SUPER'>, <TokenType.RANGE: 'RANGE'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.YEAR: 'YEAR'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.IPV6: 'IPV6'>, <TokenType.ALL: 'ALL'>, <TokenType.NEXT: 'NEXT'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.TOP: 'TOP'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.JSONB: 'JSONB'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.FUNCTION: 'FUNCTION'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.ROWS: 'ROWS'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.ROW: 'ROW'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.IPV4: 'IPV4'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.SEMI: 'SEMI'>, <TokenType.DELETE: 'DELETE'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.DIV: 'DIV'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.FALSE: 'FALSE'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.USE: 'USE'>, <TokenType.TABLE: 'TABLE'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.SOME: 'SOME'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.FIRST: 'FIRST'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.CASE: 'CASE'>, <TokenType.INT: 'INT'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.ASC: 'ASC'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.NESTED: 'NESTED'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.INT128: 'INT128'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.FINAL: 'FINAL'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.CACHE: 'CACHE'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.NAME: 'NAME'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.NULL: 'NULL'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.COPY: 'COPY'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.INET: 'INET'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.VAR: 'VAR'>, <TokenType.BINARY: 'BINARY'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.SHOW: 'SHOW'>, <TokenType.DATE: 'DATE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.VIEW: 'VIEW'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>, <TokenType.XML: 'XML'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.MAP: 'MAP'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.DATE32: 'DATE32'>, <TokenType.DESC: 'DESC'>, <TokenType.ENUM: 'ENUM'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.MERGE: 'MERGE'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.WINDOW: 'WINDOW'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.TIME: 'TIME'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.CHAR: 'CHAR'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.IS: 'IS'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.MODEL: 'MODEL'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.MONEY: 'MONEY'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.KEEP: 'KEEP'>, <TokenType.INDEX: 'INDEX'>, <TokenType.UINT128: 'UINT128'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.JSON: 'JSON'>, <TokenType.SET: 'SET'>, <TokenType.BIT: 'BIT'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.LOAD: 'LOAD'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.END: 'END'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.UINT: 'UINT'>, <TokenType.KILL: 'KILL'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.UUID: 'UUID'>, <TokenType.INT256: 'INT256'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.ANTI: 'ANTI'>}
FUNCTIONS = {'ABS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Abs'>>, 'ADD_MONTHS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AddMonths'>>, 'ANONYMOUS_AGG_FUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AnonymousAggFunc'>>, 'ANY_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AnyValue'>>, 'APPROX_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_COUNT_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxQuantile'>>, 'APPROX_TOP_K': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxTopK'>>, 'ARG_MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARGMAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'MAX_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARG_MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARGMIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'MIN_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Array'>>, 'ARRAY_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAgg'>>, 'ARRAY_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAll'>>, 'ARRAY_ANY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAny'>>, 'ARRAY_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CONSTRUCT_COMPACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConstructCompact'>>, 'ARRAY_CONTAINS': <function Snowflake.Parser.<lambda>>, 'ARRAY_HAS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContains'>>, 'ARRAY_CONTAINS_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContainsAll'>>, 'ARRAY_HAS_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContainsAll'>>, 'FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_OVERLAPS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayOverlaps'>>, 'ARRAY_SIZE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySize'>>, 'ARRAY_LENGTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySize'>>, 'ARRAY_SORT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySort'>>, 'ARRAY_SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySum'>>, 'ARRAY_TO_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayToString'>>, 'ARRAY_JOIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayToString'>>, 'ARRAY_UNION_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayUnionAgg'>>, 'ARRAY_UNIQUE_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayUniqueAgg'>>, 'AVG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Avg'>>, 'CASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Case'>>, 'CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Cast'>>, 'CAST_TO_STR_TYPE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CastToStrType'>>, 'CBRT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Cbrt'>>, 'CEIL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CEILING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CHR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Chr'>>, 'CHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Chr'>>, 'COALESCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'IFNULL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'NVL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'COLLATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Collate'>>, 'COMBINED_AGG_FUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CombinedAggFunc'>>, 'COMBINED_PARAMETERIZED_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CombinedParameterizedAgg'>>, 'CONCAT': <function Parser.<lambda>>, 'CONCAT_WS': <function Parser.<lambda>>, 'CONNECT_BY_ROOT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ConnectByRoot'>>, 'CONVERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Convert'>>, 'CORR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Corr'>>, 'COUNT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Count'>>, 'COUNT_IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CountIf'>>, 'COUNTIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CountIf'>>, 'COVAR_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CovarPop'>>, 'COVAR_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CovarSamp'>>, 'CURRENT_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDate'>>, 'CURRENT_DATETIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDatetime'>>, 'CURRENT_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTime'>>, 'CURRENT_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTimestamp'>>, 'CURRENT_USER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentUser'>>, 'DATE': <function _build_datetime.<locals>._builder>, 'DATE_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateAdd'>>, 'DATEDIFF': <function _build_datediff>, 'DATE_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateDiff'>>, 'DATE_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateFromParts'>>, 'DATEFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateFromParts'>>, 'DATE_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateStrToDate'>>, 'DATE_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateSub'>>, 'DATE_TO_DATE_STR': <function Parser.<lambda>>, 'DATE_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateToDi'>>, 'DATE_TRUNC': <function _date_trunc_to_time>, 'DATETIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Datetime'>>, 'DATETIME_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeAdd'>>, 'DATETIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeDiff'>>, 'DATETIME_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeSub'>>, 'DATETIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeTrunc'>>, 'DAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Day'>>, 'DAY_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAYOFMONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAY_OF_WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAYOFWEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAY_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DAYOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DECODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Decode'>>, 'DI_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DiToDate'>>, 'ENCODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Encode'>>, 'EXP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Exp'>>, 'EXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Explode'>>, 'EXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ExplodeOuter'>>, 'EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Extract'>>, 'FIRST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.First'>>, 'FIRST_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FirstValue'>>, 'FLATTEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Explode'>>, 'FLOOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Floor'>>, 'FROM_BASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase'>>, 'FROM_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase64'>>, 'GAP_FILL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GapFill'>>, 'GENERATE_DATE_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateDateArray'>>, 'GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'GREATEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Greatest'>>, 'GROUP_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GroupConcat'>>, 'HEX': <function build_hex>, 'HLL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Hll'>>, 'IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'IIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'INITCAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Initcap'>>, 'IS_INF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsInf'>>, 'ISINF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsInf'>>, 'IS_NAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'ISNAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'J_S_O_N_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArray'>>, 'J_S_O_N_ARRAY_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayAgg'>>, 'JSON_ARRAY_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayContains'>>, 'JSONB_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBContains'>>, 'JSONB_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtract'>>, 'JSONB_EXTRACT_SCALAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtractScalar'>>, 'JSON_EXTRACT': <function build_extract_json_with_path.<locals>._builder>, 'JSON_EXTRACT_SCALAR': <function build_extract_json_with_path.<locals>._builder>, 'JSON_FORMAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONFormat'>>, 'J_S_O_N_OBJECT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONObject'>>, 'J_S_O_N_OBJECT_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONObjectAgg'>>, 'J_S_O_N_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONTable'>>, 'LAG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lag'>>, 'LAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Last'>>, 'LAST_DAY': <function Snowflake.Parser.<lambda>>, 'LAST_DAY_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastDay'>>, 'LAST_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastValue'>>, 'LEAD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lead'>>, 'LEAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Least'>>, 'LEFT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Left'>>, 'LENGTH': <function Snowflake.Parser.<lambda>>, 'LEN': <function Snowflake.Parser.<lambda>>, 'LEVENSHTEIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Levenshtein'>>, 'LIST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.List'>>, 'LN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ln'>>, 'LOG': <function build_logarithm>, 'LOGICAL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOLAND_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'LOGICAL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOLOR_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'LOWER': <function build_lower>, 'LCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lower'>>, 'LOWER_HEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LowerHex'>>, 'MD5': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5'>>, 'MD5_DIGEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5Digest'>>, 'MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Map'>>, 'MAP_FROM_ENTRIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MapFromEntries'>>, 'MATCH_AGAINST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MatchAgainst'>>, 'MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Max'>>, 'MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Min'>>, 'MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Month'>>, 'MONTHS_BETWEEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MonthsBetween'>>, 'NEXT_VALUE_FOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NextValueFor'>>, 'NTH_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NthValue'>>, 'NULLIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nullif'>>, 'NUMBER_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NumberToStr'>>, 'NVL2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nvl2'>>, 'OBJECT_INSERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ObjectInsert'>>, 'OPEN_J_S_O_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.OpenJSON'>>, 'PAD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pad'>>, 'PARAMETERIZED_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParameterizedAgg'>>, 'PARSE_JSON': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'JSON_PARSE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'PERCENTILE_CONT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileCont'>>, 'PERCENTILE_DISC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileDisc'>>, 'POSEXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Posexplode'>>, 'POSEXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PosexplodeOuter'>>, 'POWER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'POW': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'PREDICT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Predict'>>, 'QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Quantile'>>, 'QUARTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Quarter'>>, 'RAND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Rand'>>, 'RANDOM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Rand'>>, 'RANDN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Randn'>>, 'RANGE_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RangeN'>>, 'READ_CSV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ReadCSV'>>, 'REDUCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Reduce'>>, 'REGEXP_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpExtract'>>, 'REGEXP_I_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpILike'>>, 'REGEXP_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'REGEXP_REPLACE': <function _build_regexp_replace>, 'REGEXP_SPLIT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpSplit'>>, 'REPEAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Repeat'>>, 'RIGHT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Right'>>, 'ROUND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Round'>>, 'ROW_NUMBER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RowNumber'>>, 'SHA': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA1': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA2'>>, 'SAFE_DIVIDE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SafeDivide'>>, 'SIGN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sign'>>, 'SIGNUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sign'>>, 'SORT_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SortArray'>>, 'SPLIT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Split'>>, 'SQRT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sqrt'>>, 'STANDARD_HASH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StandardHash'>>, 'STAR_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StarMap'>>, 'STARTS_WITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STARTSWITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STDDEV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stddev'>>, 'STDEV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stddev'>>, 'STDDEV_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevPop'>>, 'STDDEV_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevSamp'>>, 'STR_POSITION': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrPosition'>>, 'STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToDate'>>, 'STR_TO_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToMap'>>, 'STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToTime'>>, 'STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToUnix'>>, 'STRING_TO_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StringToArray'>>, 'SPLIT_BY_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StringToArray'>>, 'STRUCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Struct'>>, 'STRUCT_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StructExtract'>>, 'STUFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'INSERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'SUBSTRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Substring'>>, 'SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sum'>>, 'TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Time'>>, 'TIME_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeAdd'>>, 'TIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeDiff'>>, 'TIME_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeFromParts'>>, 'TIMEFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeFromParts'>>, 'TIME_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToDate'>>, 'TIME_STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToTime'>>, 'TIME_STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToUnix'>>, 'TIME_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeSub'>>, 'TIME_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToStr'>>, 'TIME_TO_TIME_STR': <function Parser.<lambda>>, 'TIME_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToUnix'>>, 'TIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeTrunc'>>, 'TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Timestamp'>>, 'TIMESTAMP_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampAdd'>>, 'TIMESTAMPDIFF': <function _build_datediff>, 'TIMESTAMP_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_FROM_PARTS': <function build_timestamp_from_parts>, 'TIMESTAMPFROMPARTS': <function build_timestamp_from_parts>, 'TIMESTAMP_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampSub'>>, 'TIMESTAMP_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampTrunc'>>, 'TO_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToArray'>>, 'TO_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToBase64'>>, 'TO_CHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToChar'>>, 'TO_DAYS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToDays'>>, 'TO_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToMap'>>, 'TO_NUMBER': <function Snowflake.Parser.<lambda>>, 'TRANSFORM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Transform'>>, 'TRIM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Trim'>>, 'TRY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Try'>>, 'TRY_CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TryCast'>>, 'TS_OR_DI_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDiToDi'>>, 'TS_OR_DS_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsAdd'>>, 'TS_OR_DS_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsDiff'>>, 'TS_OR_DS_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToDate'>>, 'TS_OR_DS_TO_DATE_STR': <function Parser.<lambda>>, 'TS_OR_DS_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToTime'>>, 'TS_OR_DS_TO_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToTimestamp'>>, 'UNHEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Unhex'>>, 'UNIX_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixDate'>>, 'UNIX_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToStr'>>, 'UNIX_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTime'>>, 'UNIX_TO_TIME_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTimeStr'>>, 'UNNEST': <function Parser.<lambda>>, 'UPPER': <function build_upper>, 'UCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Upper'>>, 'VAR_MAP': <function build_var_map>, 'VARIANCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VAR_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'VAR_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Week'>>, 'WEEK_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WEEKOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WHEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.When'>>, 'X_M_L_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.XMLTable'>>, 'XOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Xor'>>, 'YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Year'>>, 'GLOB': <function Parser.<lambda>>, 'JSON_EXTRACT_PATH_TEXT': <function build_extract_json_with_path.<locals>._builder>, 'LIKE': <function build_like>, 'LOG2': <function Parser.<lambda>>, 'LOG10': <function Parser.<lambda>>, 'LPAD': <function Parser.<lambda>>, 'LEFTPAD': <function Parser.<lambda>>, 'MOD': <function build_mod>, 'RPAD': <function Parser.<lambda>>, 'RIGHTPAD': <function Parser.<lambda>>, 'SCOPE_RESOLUTION': <function Parser.<lambda>>, 'TO_HEX': <function build_hex>, 'APPROX_PERCENTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxQuantile'>>, 'ARRAYAGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAgg'>>, 'ARRAY_CONSTRUCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Array'>>, 'ARRAY_GENERATE_RANGE': <function Snowflake.Parser.<lambda>>, 'BITXOR': <function binary_from_function.<locals>.<lambda>>, 'BIT_XOR': <function binary_from_function.<locals>.<lambda>>, 'BOOLXOR': <function binary_from_function.<locals>.<lambda>>, 'CONVERT_TIMEZONE': <function _build_convert_timezone>, 'DATEADD': <function _build_date_time_add.<locals>._builder>, 'DIV0': <function _build_if_from_div0>, 'GET_PATH': <function Snowflake.Parser.<lambda>>, 'IFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'LISTAGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GroupConcat'>>, 'MEDIAN': <function Snowflake.Parser.<lambda>>, 'NULLIFZERO': <function _build_if_from_nullifzero>, 'OBJECT_CONSTRUCT': <function _build_object_construct>, 'REGEXP_SUBSTR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpExtract'>>, 'RLIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'SQUARE': <function Snowflake.Parser.<lambda>>, 'TIMEADD': <function _build_date_time_add.<locals>._builder>, 'TIMEDIFF': <function _build_datediff>, 'TIMESTAMPADD': <function _build_date_time_add.<locals>._builder>, 'TRY_PARSE_JSON': <function Snowflake.Parser.<lambda>>, 'TRY_TO_DATE': <function _build_datetime.<locals>._builder>, 'TO_DATE': <function _build_datetime.<locals>._builder>, 'TO_TIME': <function _build_datetime.<locals>._builder>, 'TO_TIMESTAMP': <function _build_datetime.<locals>._builder>, 'TO_TIMESTAMP_LTZ': <function _build_datetime.<locals>._builder>, 'TO_TIMESTAMP_NTZ': <function _build_datetime.<locals>._builder>, 'TO_TIMESTAMP_TZ': <function _build_datetime.<locals>._builder>, 'TO_VARCHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToChar'>>, 'ZEROIFNULL': <function _build_if_from_zeroifnull>}
FUNCTION_PARSERS = {'CAST': <function Parser.<lambda>>, 'CONVERT': <function Parser.<lambda>>, 'DECODE': <function Parser.<lambda>>, 'EXTRACT': <function Parser.<lambda>>, 'GAP_FILL': <function Parser.<lambda>>, 'JSON_OBJECT': <function Parser.<lambda>>, 'JSON_OBJECTAGG': <function Parser.<lambda>>, 'JSON_TABLE': <function Parser.<lambda>>, 'MATCH': <function Parser.<lambda>>, 'OPENJSON': <function Parser.<lambda>>, 'POSITION': <function Parser.<lambda>>, 'PREDICT': <function Parser.<lambda>>, 'SAFE_CAST': <function Parser.<lambda>>, 'STRING_AGG': <function Parser.<lambda>>, 'SUBSTRING': <function Parser.<lambda>>, 'TRY_CAST': <function Parser.<lambda>>, 'TRY_CONVERT': <function Parser.<lambda>>, 'DATE_PART': <function Snowflake.Parser.<lambda>>, 'OBJECT_CONSTRUCT_KEEP_NULL': <function Snowflake.Parser.<lambda>>}
TIMESTAMPS = {<TokenType.TIMETZ: 'TIMETZ'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}
RANGE_PARSERS = {<TokenType.BETWEEN: 'BETWEEN'>: <function Parser.<lambda>>, <TokenType.GLOB: 'GLOB'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.ILIKE: 'ILIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.IN: 'IN'>: <function Parser.<lambda>>, <TokenType.IRLIKE: 'IRLIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.IS: 'IS'>: <function Parser.<lambda>>, <TokenType.LIKE: 'LIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.OVERLAPS: 'OVERLAPS'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.RLIKE: 'RLIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.SIMILAR_TO: 'SIMILAR_TO'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.FOR: 'FOR'>: <function Parser.<lambda>>, <TokenType.LIKE_ANY: 'LIKE_ANY'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.ILIKE_ANY: 'ILIKE_ANY'>: <function binary_range_parser.<locals>._parse_binary_range>}
ALTER_PARSERS = {'ADD': <function Parser.<lambda>>, 'ALTER': <function Parser.<lambda>>, 'CLUSTER BY': <function Parser.<lambda>>, 'DELETE': <function Parser.<lambda>>, 'DROP': <function Parser.<lambda>>, 'RENAME': <function Parser.<lambda>>, 'SET': <function Parser.<lambda>>, 'UNSET': <function Snowflake.Parser.<lambda>>, 'SWAP': <function Snowflake.Parser.<lambda>>}
STATEMENT_PARSERS = {<TokenType.ALTER: 'ALTER'>: <function Parser.<lambda>>, <TokenType.BEGIN: 'BEGIN'>: <function Parser.<lambda>>, <TokenType.CACHE: 'CACHE'>: <function Parser.<lambda>>, <TokenType.COMMENT: 'COMMENT'>: <function Parser.<lambda>>, <TokenType.COMMIT: 'COMMIT'>: <function Parser.<lambda>>, <TokenType.COPY: 'COPY'>: <function Parser.<lambda>>, <TokenType.CREATE: 'CREATE'>: <function Parser.<lambda>>, <TokenType.DELETE: 'DELETE'>: <function Parser.<lambda>>, <TokenType.DESC: 'DESC'>: <function Parser.<lambda>>, <TokenType.DESCRIBE: 'DESCRIBE'>: <function Parser.<lambda>>, <TokenType.DROP: 'DROP'>: <function Parser.<lambda>>, <TokenType.INSERT: 'INSERT'>: <function Parser.<lambda>>, <TokenType.KILL: 'KILL'>: <function Parser.<lambda>>, <TokenType.LOAD: 'LOAD'>: <function Parser.<lambda>>, <TokenType.MERGE: 'MERGE'>: <function Parser.<lambda>>, <TokenType.PIVOT: 'PIVOT'>: <function Parser.<lambda>>, <TokenType.PRAGMA: 'PRAGMA'>: <function Parser.<lambda>>, <TokenType.REFRESH: 'REFRESH'>: <function Parser.<lambda>>, <TokenType.ROLLBACK: 'ROLLBACK'>: <function Parser.<lambda>>, <TokenType.SET: 'SET'>: <function Parser.<lambda>>, <TokenType.TRUNCATE: 'TRUNCATE'>: <function Parser.<lambda>>, <TokenType.UNCACHE: 'UNCACHE'>: <function Parser.<lambda>>, <TokenType.UPDATE: 'UPDATE'>: <function Parser.<lambda>>, <TokenType.USE: 'USE'>: <function Parser.<lambda>>, <TokenType.SEMICOLON: 'SEMICOLON'>: <function Parser.<lambda>>, <TokenType.SHOW: 'SHOW'>: <function Snowflake.Parser.<lambda>>}
PROPERTY_PARSERS = {'ALLOWED_VALUES': <function Parser.<lambda>>, 'ALGORITHM': <function Parser.<lambda>>, 'AUTO': <function Parser.<lambda>>, 'AUTO_INCREMENT': <function Parser.<lambda>>, 'BACKUP': <function Parser.<lambda>>, 'BLOCKCOMPRESSION': <function Parser.<lambda>>, 'CHARSET': <function Parser.<lambda>>, 'CHARACTER SET': <function Parser.<lambda>>, 'CHECKSUM': <function Parser.<lambda>>, 'CLUSTER BY': <function Parser.<lambda>>, 'CLUSTERED': <function Parser.<lambda>>, 'COLLATE': <function Parser.<lambda>>, 'COMMENT': <function Parser.<lambda>>, 'CONTAINS': <function Parser.<lambda>>, 'COPY': <function Parser.<lambda>>, 'DATABLOCKSIZE': <function Parser.<lambda>>, 'DATA_DELETION': <function Parser.<lambda>>, 'DEFINER': <function Parser.<lambda>>, 'DETERMINISTIC': <function Parser.<lambda>>, 'DYNAMIC': <function Parser.<lambda>>, 'DISTKEY': <function Parser.<lambda>>, 'DISTSTYLE': <function Parser.<lambda>>, 'ENGINE': <function Parser.<lambda>>, 'EXECUTE': <function Parser.<lambda>>, 'EXTERNAL': <function Parser.<lambda>>, 'FALLBACK': <function Parser.<lambda>>, 'FORMAT': <function Parser.<lambda>>, 'FREESPACE': <function Parser.<lambda>>, 'GLOBAL': <function Parser.<lambda>>, 'HEAP': <function Parser.<lambda>>, 'ICEBERG': <function Parser.<lambda>>, 'IMMUTABLE': <function Parser.<lambda>>, 'INHERITS': <function Parser.<lambda>>, 'INPUT': <function Parser.<lambda>>, 'JOURNAL': <function Parser.<lambda>>, 'LANGUAGE': <function Parser.<lambda>>, 'LAYOUT': <function Parser.<lambda>>, 'LIFETIME': <function Parser.<lambda>>, 'LIKE': <function Parser.<lambda>>, 'LOCATION': <function Snowflake.Parser.<lambda>>, 'LOCK': <function Parser.<lambda>>, 'LOCKING': <function Parser.<lambda>>, 'LOG': <function Parser.<lambda>>, 'MATERIALIZED': <function Parser.<lambda>>, 'MERGEBLOCKRATIO': <function Parser.<lambda>>, 'MODIFIES': <function Parser.<lambda>>, 'MULTISET': <function Parser.<lambda>>, 'NO': <function Parser.<lambda>>, 'ON': <function Parser.<lambda>>, 'ORDER BY': <function Parser.<lambda>>, 'OUTPUT': <function Parser.<lambda>>, 'PARTITION': <function Parser.<lambda>>, 'PARTITION BY': <function Parser.<lambda>>, 'PARTITIONED BY': <function Parser.<lambda>>, 'PARTITIONED_BY': <function Parser.<lambda>>, 'PRIMARY KEY': <function Parser.<lambda>>, 'RANGE': <function Parser.<lambda>>, 'READS': <function Parser.<lambda>>, 'REMOTE': <function Parser.<lambda>>, 'RETURNS': <function Parser.<lambda>>, 'STRICT': <function Parser.<lambda>>, 'ROW': <function Parser.<lambda>>, 'ROW_FORMAT': <function Parser.<lambda>>, 'SAMPLE': <function Parser.<lambda>>, 'SECURE': <function Parser.<lambda>>, 'SET': <function Parser.<lambda>>, 'SETTINGS': <function Parser.<lambda>>, 'SHARING': <function Parser.<lambda>>, 'SORTKEY': <function Parser.<lambda>>, 'SOURCE': <function Parser.<lambda>>, 'STABLE': <function Parser.<lambda>>, 'STORED': <function Parser.<lambda>>, 'SYSTEM_VERSIONING': <function Parser.<lambda>>, 'TBLPROPERTIES': <function Parser.<lambda>>, 'TEMP': <function Parser.<lambda>>, 'TEMPORARY': <function Parser.<lambda>>, 'TO': <function Parser.<lambda>>, 'TRANSIENT': <function Parser.<lambda>>, 'TRANSFORM': <function Parser.<lambda>>, 'TTL': <function Parser.<lambda>>, 'USING': <function Parser.<lambda>>, 'UNLOGGED': <function Parser.<lambda>>, 'VOLATILE': <function Parser.<lambda>>, 'WITH': <function Parser.<lambda>>}
TYPE_CONVERTERS = {<Type.DECIMAL: 'DECIMAL'>: <function build_default_decimal_type.<locals>._builder>}
SHOW_PARSERS = {'SCHEMAS': <function _show_parser.<locals>._parse>, 'TERSE SCHEMAS': <function _show_parser.<locals>._parse>, 'OBJECTS': <function _show_parser.<locals>._parse>, 'TERSE OBJECTS': <function _show_parser.<locals>._parse>, 'TABLES': <function _show_parser.<locals>._parse>, 'TERSE TABLES': <function _show_parser.<locals>._parse>, 'VIEWS': <function _show_parser.<locals>._parse>, 'TERSE VIEWS': <function _show_parser.<locals>._parse>, 'PRIMARY KEYS': <function _show_parser.<locals>._parse>, 'TERSE PRIMARY KEYS': <function _show_parser.<locals>._parse>, 'IMPORTED KEYS': <function _show_parser.<locals>._parse>, 'TERSE IMPORTED KEYS': <function _show_parser.<locals>._parse>, 'UNIQUE KEYS': <function _show_parser.<locals>._parse>, 'TERSE UNIQUE KEYS': <function _show_parser.<locals>._parse>, 'SEQUENCES': <function _show_parser.<locals>._parse>, 'TERSE SEQUENCES': <function _show_parser.<locals>._parse>, 'COLUMNS': <function _show_parser.<locals>._parse>, 'USERS': <function _show_parser.<locals>._parse>, 'TERSE USERS': <function _show_parser.<locals>._parse>}
CONSTRAINT_PARSERS = {'AUTOINCREMENT': <function Parser.<lambda>>, 'AUTO_INCREMENT': <function Parser.<lambda>>, 'CASESPECIFIC': <function Parser.<lambda>>, 'CHARACTER SET': <function Parser.<lambda>>, 'CHECK': <function Parser.<lambda>>, 'COLLATE': <function Parser.<lambda>>, 'COMMENT': <function Parser.<lambda>>, 'COMPRESS': <function Parser.<lambda>>, 'CLUSTERED': <function Parser.<lambda>>, 'NONCLUSTERED': <function Parser.<lambda>>, 'DEFAULT': <function Parser.<lambda>>, 'ENCODE': <function Parser.<lambda>>, 'EPHEMERAL': <function Parser.<lambda>>, 'EXCLUDE': <function Parser.<lambda>>, 'FOREIGN KEY': <function Parser.<lambda>>, 'FORMAT': <function Parser.<lambda>>, 'GENERATED': <function Parser.<lambda>>, 'IDENTITY': <function Parser.<lambda>>, 'INLINE': <function Parser.<lambda>>, 'LIKE': <function Parser.<lambda>>, 'NOT': <function Parser.<lambda>>, 'NULL': <function Parser.<lambda>>, 'ON': <function Parser.<lambda>>, 'PATH': <function Parser.<lambda>>, 'PERIOD': <function Parser.<lambda>>, 'PRIMARY KEY': <function Parser.<lambda>>, 'REFERENCES': <function Parser.<lambda>>, 'TITLE': <function Parser.<lambda>>, 'TTL': <function Parser.<lambda>>, 'UNIQUE': <function Parser.<lambda>>, 'UPPERCASE': <function Parser.<lambda>>, 'WITH': <function Snowflake.Parser.<lambda>>, 'MASKING': <function Snowflake.Parser.<lambda>>, 'PROJECTION': <function Snowflake.Parser.<lambda>>, 'TAG': <function Snowflake.Parser.<lambda>>}
STAGED_FILE_SINGLE_TOKENS = {<TokenType.MOD: 'MOD'>, <TokenType.SLASH: 'SLASH'>, <TokenType.DOT: 'DOT'>}
FLATTEN_COLUMNS = ['SEQ', 'KEY', 'PATH', 'INDEX', 'VALUE', 'THIS']
SCHEMA_KINDS = {'OBJECTS', 'SEQUENCES', 'UNIQUE KEYS', 'VIEWS', 'TABLES', 'IMPORTED KEYS'}
NON_TABLE_CREATABLES = {'STREAMLIT', 'TAG', 'STORAGE INTEGRATION', 'WAREHOUSE'}
LAMBDAS = {<TokenType.ARROW: 'ARROW'>: <function Snowflake.Parser.<lambda>>, <TokenType.FARROW: 'FARROW'>: <function Parser.<lambda>>}
SHOW_TRIE: Dict = {'SCHEMAS': {0: True}, 'TERSE': {'SCHEMAS': {0: True}, 'OBJECTS': {0: True}, 'TABLES': {0: True}, 'VIEWS': {0: True}, 'PRIMARY': {'KEYS': {0: True}}, 'IMPORTED': {'KEYS': {0: True}}, 'UNIQUE': {'KEYS': {0: True}}, 'SEQUENCES': {0: True}, 'USERS': {0: True}}, 'OBJECTS': {0: True}, 'TABLES': {0: True}, 'VIEWS': {0: True}, 'PRIMARY': {'KEYS': {0: True}}, 'IMPORTED': {'KEYS': {0: True}}, 'UNIQUE': {'KEYS': {0: True}}, 'SEQUENCES': {0: True}, 'COLUMNS': {0: True}, 'USERS': {0: True}}
SET_TRIE: Dict = {'GLOBAL': {0: True}, 'LOCAL': {0: True}, 'SESSION': {0: True}, 'TRANSACTION': {0: True}}

##### Inherited Members

sqlglot.parser.Parser
  Parser
  NO_PAREN_FUNCTIONS
  STRUCT_TYPE_TOKENS
  NESTED_TYPE_TOKENS
  ENUM_TYPE_TOKENS
  AGGREGATE_TYPE_TOKENS
  TYPE_TOKENS
  SIGNED_TO_UNSIGNED_TYPE_TOKEN
  SUBQUERY_PREDICATES
  RESERVED_TOKENS
  DB_CREATABLES
  CREATABLES
  INTERVAL_VARS
  ALIAS_TOKENS
  ARRAY_CONSTRUCTORS
  COMMENT_TABLE_ALIAS_TOKENS
  UPDATE_ALIAS_TOKENS
  TRIM_TYPES
  FUNC_TOKENS
  CONJUNCTION
  ASSIGNMENT
  DISJUNCTION
  EQUALITY
  COMPARISON
  BITWISE
  TERM
  FACTOR
  EXPONENT
  TIMES
  SET_OPERATIONS
  JOIN_METHODS
  JOIN_SIDES
  JOIN_KINDS
  JOIN_HINTS
  COLUMN_OPERATORS
  EXPRESSION_PARSERS
  UNARY_PARSERS
  STRING_PARSERS
  NUMERIC_PARSERS
  PRIMARY_PARSERS
  PLACEHOLDER_PARSERS
  ALTER_ALTER_PARSERS
  SCHEMA_UNNAMED_CONSTRAINTS
  NO_PAREN_FUNCTION_PARSERS
  INVALID_FUNC_NAME_TOKENS
  FUNCTIONS_WITH_ALIASED_ARGS
  KEY_VALUE_DEFINITIONS
  QUERY_MODIFIER_PARSERS
  SET_PARSERS
  TYPE_LITERAL_PARSERS
  DDL_SELECT_TOKENS
  PRE_VOLATILE_TOKENS
  TRANSACTION_KIND
  TRANSACTION_CHARACTERISTICS
  CONFLICT_ACTIONS
  CREATE_SEQUENCE
  ISOLATED_LOADING_OPTIONS
  USABLES
  CAST_ACTIONS
  SCHEMA_BINDING_OPTIONS
  KEY_CONSTRAINT_OPTIONS
  INSERT_ALTERNATIVES
  CLONE_KEYWORDS
  HISTORICAL_DATA_PREFIX
  HISTORICAL_DATA_KIND
  OPCLASS_FOLLOW_KEYWORDS
  OPTYPE_FOLLOW_TOKENS
  TABLE_INDEX_HINT_TOKENS
  VIEW_ATTRIBUTES
  WINDOW_ALIAS_TOKENS
  WINDOW_BEFORE_PAREN_TOKENS
  WINDOW_SIDES
  JSON_KEY_VALUE_SEPARATOR_TOKENS
  FETCH_TOKENS
  ADD_CONSTRAINT_TOKENS
  DISTINCT_TOKENS
  NULL_TOKENS
  UNNEST_OFFSET_ALIAS_TOKENS
  SELECT_START_TOKENS
  COPY_INTO_VARLEN_OPTIONS
  STRICT_CAST
  PREFIXED_PIVOT_COLUMNS
  LOG_DEFAULTS_TO_LN
  ALTER_TABLE_ADD_REQUIRED_FOR_EACH_COLUMN
  TABLESAMPLE_CSV
  SET_REQUIRES_ASSIGNMENT_DELIMITER
  TRIM_PATTERN_FIRST
  STRING_ALIASES
  MODIFIERS_ATTACHED_TO_SET_OP
  SET_OP_MODIFIERS
  NO_PAREN_IF_COMMANDS
  JSON_ARROWS_REQUIRE_JSON_TYPE
  VALUES_FOLLOWED_BY_PAREN
  SUPPORTS_IMPLICIT_UNNEST
  INTERVAL_SPANS
  SUPPORTS_PARTITION_SELECTION
  error_level
  error_message_context
  max_errors
  dialect
  reset
  parse
  parse_into
  check_errors
  raise_error
  expression
  validate_expression
  errors
  sql

class Snowflake.Tokenizer(sqlglot.tokens.Tokenizer): View Source

    637    class Tokenizer(tokens.Tokenizer):
    638        STRING_ESCAPES = ["\\", "'"]
    639        HEX_STRINGS = [("x'", "'"), ("X'", "'")]
    640        RAW_STRINGS = ["$$"]
    641        COMMENTS = ["--", "//", ("/*", "*/")]
    642
    643        KEYWORDS = {
    644            **tokens.Tokenizer.KEYWORDS,
    645            "BYTEINT": TokenType.INT,
    646            "CHAR VARYING": TokenType.VARCHAR,
    647            "CHARACTER VARYING": TokenType.VARCHAR,
    648            "EXCLUDE": TokenType.EXCEPT,
    649            "ILIKE ANY": TokenType.ILIKE_ANY,
    650            "LIKE ANY": TokenType.LIKE_ANY,
    651            "MATCH_CONDITION": TokenType.MATCH_CONDITION,
    652            "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE,
    653            "MINUS": TokenType.EXCEPT,
    654            "NCHAR VARYING": TokenType.VARCHAR,
    655            "PUT": TokenType.COMMAND,
    656            "REMOVE": TokenType.COMMAND,
    657            "RM": TokenType.COMMAND,
    658            "SAMPLE": TokenType.TABLE_SAMPLE,
    659            "SQL_DOUBLE": TokenType.DOUBLE,
    660            "SQL_VARCHAR": TokenType.VARCHAR,
    661            "STORAGE INTEGRATION": TokenType.STORAGE_INTEGRATION,
    662            "TAG": TokenType.TAG,
    663            "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ,
    664            "TOP": TokenType.TOP,
    665            "WAREHOUSE": TokenType.WAREHOUSE,
    666            "STREAMLIT": TokenType.STREAMLIT,
    667        }
    668        KEYWORDS.pop("/*+")
    669
    670        SINGLE_TOKENS = {
    671            **tokens.Tokenizer.SINGLE_TOKENS,
    672            "$": TokenType.PARAMETER,
    673        }
    674
    675        VAR_SINGLE_TOKENS = {"$"}
    676
    677        COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW}

STRING_ESCAPES = ['\\', "'"]
HEX_STRINGS = [("x'", "'"), ("X'", "'")]
RAW_STRINGS = ['$$']
COMMENTS = ['--', '//', ('/*', '*/')]
KEYWORDS = {'{%': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%-': <TokenType.BLOCK_START: 'BLOCK_START'>, '%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '+%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '{{+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{{-': <TokenType.BLOCK_START: 'BLOCK_START'>, '+}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '==': <TokenType.EQ: 'EQ'>, '::': <TokenType.DCOLON: 'DCOLON'>, '||': <TokenType.DPIPE: 'DPIPE'>, '>=': <TokenType.GTE: 'GTE'>, '<=': <TokenType.LTE: 'LTE'>, '<>': <TokenType.NEQ: 'NEQ'>, '!=': <TokenType.NEQ: 'NEQ'>, ':=': <TokenType.COLON_EQ: 'COLON_EQ'>, '<=>': <TokenType.NULLSAFE_EQ: 'NULLSAFE_EQ'>, '->': <TokenType.ARROW: 'ARROW'>, '->>': <TokenType.DARROW: 'DARROW'>, '=>': <TokenType.FARROW: 'FARROW'>, '#>': <TokenType.HASH_ARROW: 'HASH_ARROW'>, '#>>': <TokenType.DHASH_ARROW: 'DHASH_ARROW'>, '<->': <TokenType.LR_ARROW: 'LR_ARROW'>, '&&': <TokenType.DAMP: 'DAMP'>, '??': <TokenType.DQMARK: 'DQMARK'>, 'ALL': <TokenType.ALL: 'ALL'>, 'ALWAYS': <TokenType.ALWAYS: 'ALWAYS'>, 'AND': <TokenType.AND: 'AND'>, 'ANTI': <TokenType.ANTI: 'ANTI'>, 'ANY': <TokenType.ANY: 'ANY'>, 'ASC': <TokenType.ASC: 'ASC'>, 'AS': <TokenType.ALIAS: 'ALIAS'>, 'ASOF': <TokenType.ASOF: 'ASOF'>, 'AUTOINCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'AUTO_INCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'BEGIN': <TokenType.BEGIN: 'BEGIN'>, 'BETWEEN': <TokenType.BETWEEN: 'BETWEEN'>, 'CACHE': <TokenType.CACHE: 'CACHE'>, 'UNCACHE': <TokenType.UNCACHE: 'UNCACHE'>, 'CASE': <TokenType.CASE: 'CASE'>, 'CHARACTER SET': <TokenType.CHARACTER_SET: 'CHARACTER_SET'>, 'CLUSTER BY': <TokenType.CLUSTER_BY: 'CLUSTER_BY'>, 'COLLATE': <TokenType.COLLATE: 'COLLATE'>, 'COLUMN': <TokenType.COLUMN: 'COLUMN'>, 'COMMIT': <TokenType.COMMIT: 'COMMIT'>, 'CONNECT BY': <TokenType.CONNECT_BY: 'CONNECT_BY'>, 'CONSTRAINT': <TokenType.CONSTRAINT: 'CONSTRAINT'>, 'COPY': <TokenType.COPY: 'COPY'>, 'CREATE': <TokenType.CREATE: 'CREATE'>, 'CROSS': <TokenType.CROSS: 'CROSS'>, 'CUBE': <TokenType.CUBE: 'CUBE'>, 'CURRENT_DATE': <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, 'CURRENT_TIME': <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, 'CURRENT_TIMESTAMP': <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, 'CURRENT_USER': <TokenType.CURRENT_USER: 'CURRENT_USER'>, 'DATABASE': <TokenType.DATABASE: 'DATABASE'>, 'DEFAULT': <TokenType.DEFAULT: 'DEFAULT'>, 'DELETE': <TokenType.DELETE: 'DELETE'>, 'DESC': <TokenType.DESC: 'DESC'>, 'DESCRIBE': <TokenType.DESCRIBE: 'DESCRIBE'>, 'DISTINCT': <TokenType.DISTINCT: 'DISTINCT'>, 'DISTRIBUTE BY': <TokenType.DISTRIBUTE_BY: 'DISTRIBUTE_BY'>, 'DIV': <TokenType.DIV: 'DIV'>, 'DROP': <TokenType.DROP: 'DROP'>, 'ELSE': <TokenType.ELSE: 'ELSE'>, 'END': <TokenType.END: 'END'>, 'ENUM': <TokenType.ENUM: 'ENUM'>, 'ESCAPE': <TokenType.ESCAPE: 'ESCAPE'>, 'EXCEPT': <TokenType.EXCEPT: 'EXCEPT'>, 'EXECUTE': <TokenType.EXECUTE: 'EXECUTE'>, 'EXISTS': <TokenType.EXISTS: 'EXISTS'>, 'FALSE': <TokenType.FALSE: 'FALSE'>, 'FETCH': <TokenType.FETCH: 'FETCH'>, 'FILTER': <TokenType.FILTER: 'FILTER'>, 'FIRST': <TokenType.FIRST: 'FIRST'>, 'FULL': <TokenType.FULL: 'FULL'>, 'FUNCTION': <TokenType.FUNCTION: 'FUNCTION'>, 'FOR': <TokenType.FOR: 'FOR'>, 'FOREIGN KEY': <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, 'FORMAT': <TokenType.FORMAT: 'FORMAT'>, 'FROM': <TokenType.FROM: 'FROM'>, 'GEOGRAPHY': <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, 'GEOMETRY': <TokenType.GEOMETRY: 'GEOMETRY'>, 'GLOB': <TokenType.GLOB: 'GLOB'>, 'GROUP BY': <TokenType.GROUP_BY: 'GROUP_BY'>, 'GROUPING SETS': <TokenType.GROUPING_SETS: 'GROUPING_SETS'>, 'HAVING': <TokenType.HAVING: 'HAVING'>, 'ILIKE': <TokenType.ILIKE: 'ILIKE'>, 'IN': <TokenType.IN: 'IN'>, 'INDEX': <TokenType.INDEX: 'INDEX'>, 'INET': <TokenType.INET: 'INET'>, 'INNER': <TokenType.INNER: 'INNER'>, 'INSERT': <TokenType.INSERT: 'INSERT'>, 'INTERVAL': <TokenType.INTERVAL: 'INTERVAL'>, 'INTERSECT': <TokenType.INTERSECT: 'INTERSECT'>, 'INTO': <TokenType.INTO: 'INTO'>, 'IS': <TokenType.IS: 'IS'>, 'ISNULL': <TokenType.ISNULL: 'ISNULL'>, 'JOIN': <TokenType.JOIN: 'JOIN'>, 'KEEP': <TokenType.KEEP: 'KEEP'>, 'KILL': <TokenType.KILL: 'KILL'>, 'LATERAL': <TokenType.LATERAL: 'LATERAL'>, 'LEFT': <TokenType.LEFT: 'LEFT'>, 'LIKE': <TokenType.LIKE: 'LIKE'>, 'LIMIT': <TokenType.LIMIT: 'LIMIT'>, 'LOAD': <TokenType.LOAD: 'LOAD'>, 'LOCK': <TokenType.LOCK: 'LOCK'>, 'MERGE': <TokenType.MERGE: 'MERGE'>, 'NATURAL': <TokenType.NATURAL: 'NATURAL'>, 'NEXT': <TokenType.NEXT: 'NEXT'>, 'NOT': <TokenType.NOT: 'NOT'>, 'NOTNULL': <TokenType.NOTNULL: 'NOTNULL'>, 'NULL': <TokenType.NULL: 'NULL'>, 'OBJECT': <TokenType.OBJECT: 'OBJECT'>, 'OFFSET': <TokenType.OFFSET: 'OFFSET'>, 'ON': <TokenType.ON: 'ON'>, 'OR': <TokenType.OR: 'OR'>, 'XOR': <TokenType.XOR: 'XOR'>, 'ORDER BY': <TokenType.ORDER_BY: 'ORDER_BY'>, 'ORDINALITY': <TokenType.ORDINALITY: 'ORDINALITY'>, 'OUTER': <TokenType.OUTER: 'OUTER'>, 'OVER': <TokenType.OVER: 'OVER'>, 'OVERLAPS': <TokenType.OVERLAPS: 'OVERLAPS'>, 'OVERWRITE': <TokenType.OVERWRITE: 'OVERWRITE'>, 'PARTITION': <TokenType.PARTITION: 'PARTITION'>, 'PARTITION BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED_BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PERCENT': <TokenType.PERCENT: 'PERCENT'>, 'PIVOT': <TokenType.PIVOT: 'PIVOT'>, 'PRAGMA': <TokenType.PRAGMA: 'PRAGMA'>, 'PRIMARY KEY': <TokenType.PRIMARY_KEY: 'PRIMARY_KEY'>, 'PROCEDURE': <TokenType.PROCEDURE: 'PROCEDURE'>, 'QUALIFY': <TokenType.QUALIFY: 'QUALIFY'>, 'RANGE': <TokenType.RANGE: 'RANGE'>, 'RECURSIVE': <TokenType.RECURSIVE: 'RECURSIVE'>, 'REGEXP': <TokenType.RLIKE: 'RLIKE'>, 'REPLACE': <TokenType.REPLACE: 'REPLACE'>, 'RETURNING': <TokenType.RETURNING: 'RETURNING'>, 'REFERENCES': <TokenType.REFERENCES: 'REFERENCES'>, 'RIGHT': <TokenType.RIGHT: 'RIGHT'>, 'RLIKE': <TokenType.RLIKE: 'RLIKE'>, 'ROLLBACK': <TokenType.ROLLBACK: 'ROLLBACK'>, 'ROLLUP': <TokenType.ROLLUP: 'ROLLUP'>, 'ROW': <TokenType.ROW: 'ROW'>, 'ROWS': <TokenType.ROWS: 'ROWS'>, 'SCHEMA': <TokenType.SCHEMA: 'SCHEMA'>, 'SELECT': <TokenType.SELECT: 'SELECT'>, 'SEMI': <TokenType.SEMI: 'SEMI'>, 'SET': <TokenType.SET: 'SET'>, 'SETTINGS': <TokenType.SETTINGS: 'SETTINGS'>, 'SHOW': <TokenType.SHOW: 'SHOW'>, 'SIMILAR TO': <TokenType.SIMILAR_TO: 'SIMILAR_TO'>, 'SOME': <TokenType.SOME: 'SOME'>, 'SORT BY': <TokenType.SORT_BY: 'SORT_BY'>, 'START WITH': <TokenType.START_WITH: 'START_WITH'>, 'STRAIGHT_JOIN': <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, 'TABLE': <TokenType.TABLE: 'TABLE'>, 'TABLESAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'TEMP': <TokenType.TEMPORARY: 'TEMPORARY'>, 'TEMPORARY': <TokenType.TEMPORARY: 'TEMPORARY'>, 'THEN': <TokenType.THEN: 'THEN'>, 'TRUE': <TokenType.TRUE: 'TRUE'>, 'TRUNCATE': <TokenType.TRUNCATE: 'TRUNCATE'>, 'UNION': <TokenType.UNION: 'UNION'>, 'UNKNOWN': <TokenType.UNKNOWN: 'UNKNOWN'>, 'UNNEST': <TokenType.UNNEST: 'UNNEST'>, 'UNPIVOT': <TokenType.UNPIVOT: 'UNPIVOT'>, 'UPDATE': <TokenType.UPDATE: 'UPDATE'>, 'USE': <TokenType.USE: 'USE'>, 'USING': <TokenType.USING: 'USING'>, 'UUID': <TokenType.UUID: 'UUID'>, 'VALUES': <TokenType.VALUES: 'VALUES'>, 'VIEW': <TokenType.VIEW: 'VIEW'>, 'VOLATILE': <TokenType.VOLATILE: 'VOLATILE'>, 'WHEN': <TokenType.WHEN: 'WHEN'>, 'WHERE': <TokenType.WHERE: 'WHERE'>, 'WINDOW': <TokenType.WINDOW: 'WINDOW'>, 'WITH': <TokenType.WITH: 'WITH'>, 'APPLY': <TokenType.APPLY: 'APPLY'>, 'ARRAY': <TokenType.ARRAY: 'ARRAY'>, 'BIT': <TokenType.BIT: 'BIT'>, 'BOOL': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BOOLEAN': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BYTE': <TokenType.TINYINT: 'TINYINT'>, 'MEDIUMINT': <TokenType.MEDIUMINT: 'MEDIUMINT'>, 'INT1': <TokenType.TINYINT: 'TINYINT'>, 'TINYINT': <TokenType.TINYINT: 'TINYINT'>, 'INT16': <TokenType.SMALLINT: 'SMALLINT'>, 'SHORT': <TokenType.SMALLINT: 'SMALLINT'>, 'SMALLINT': <TokenType.SMALLINT: 'SMALLINT'>, 'INT128': <TokenType.INT128: 'INT128'>, 'HUGEINT': <TokenType.INT128: 'INT128'>, 'INT2': <TokenType.SMALLINT: 'SMALLINT'>, 'INTEGER': <TokenType.INT: 'INT'>, 'INT': <TokenType.INT: 'INT'>, 'INT4': <TokenType.INT: 'INT'>, 'INT32': <TokenType.INT: 'INT'>, 'INT64': <TokenType.BIGINT: 'BIGINT'>, 'LONG': <TokenType.BIGINT: 'BIGINT'>, 'BIGINT': <TokenType.BIGINT: 'BIGINT'>, 'INT8': <TokenType.TINYINT: 'TINYINT'>, 'UINT': <TokenType.UINT: 'UINT'>, 'DEC': <TokenType.DECIMAL: 'DECIMAL'>, 'DECIMAL': <TokenType.DECIMAL: 'DECIMAL'>, 'BIGDECIMAL': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'BIGNUMERIC': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'LIST': <TokenType.LIST: 'LIST'>, 'MAP': <TokenType.MAP: 'MAP'>, 'NULLABLE': <TokenType.NULLABLE: 'NULLABLE'>, 'NUMBER': <TokenType.DECIMAL: 'DECIMAL'>, 'NUMERIC': <TokenType.DECIMAL: 'DECIMAL'>, 'FIXED': <TokenType.DECIMAL: 'DECIMAL'>, 'REAL': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT4': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT8': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE PRECISION': <TokenType.DOUBLE: 'DOUBLE'>, 'JSON': <TokenType.JSON: 'JSON'>, 'JSONB': <TokenType.JSONB: 'JSONB'>, 'CHAR': <TokenType.CHAR: 'CHAR'>, 'CHARACTER': <TokenType.CHAR: 'CHAR'>, 'NCHAR': <TokenType.NCHAR: 'NCHAR'>, 'VARCHAR': <TokenType.VARCHAR: 'VARCHAR'>, 'VARCHAR2': <TokenType.VARCHAR: 'VARCHAR'>, 'NVARCHAR': <TokenType.NVARCHAR: 'NVARCHAR'>, 'NVARCHAR2': <TokenType.NVARCHAR: 'NVARCHAR'>, 'BPCHAR': <TokenType.BPCHAR: 'BPCHAR'>, 'STR': <TokenType.TEXT: 'TEXT'>, 'STRING': <TokenType.TEXT: 'TEXT'>, 'TEXT': <TokenType.TEXT: 'TEXT'>, 'LONGTEXT': <TokenType.LONGTEXT: 'LONGTEXT'>, 'MEDIUMTEXT': <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, 'TINYTEXT': <TokenType.TINYTEXT: 'TINYTEXT'>, 'CLOB': <TokenType.TEXT: 'TEXT'>, 'LONGVARCHAR': <TokenType.TEXT: 'TEXT'>, 'BINARY': <TokenType.BINARY: 'BINARY'>, 'BLOB': <TokenType.VARBINARY: 'VARBINARY'>, 'LONGBLOB': <TokenType.LONGBLOB: 'LONGBLOB'>, 'MEDIUMBLOB': <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, 'TINYBLOB': <TokenType.TINYBLOB: 'TINYBLOB'>, 'BYTEA': <TokenType.VARBINARY: 'VARBINARY'>, 'VARBINARY': <TokenType.VARBINARY: 'VARBINARY'>, 'TIME': <TokenType.TIME: 'TIME'>, 'TIMETZ': <TokenType.TIMETZ: 'TIMETZ'>, 'TIMESTAMP': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'TIMESTAMPTZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPLTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'TIMESTAMP_LTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'TIMESTAMPNTZ': <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, 'TIMESTAMP_NTZ': <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, 'DATE': <TokenType.DATE: 'DATE'>, 'DATETIME': <TokenType.DATETIME: 'DATETIME'>, 'INT4RANGE': <TokenType.INT4RANGE: 'INT4RANGE'>, 'INT4MULTIRANGE': <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, 'INT8RANGE': <TokenType.INT8RANGE: 'INT8RANGE'>, 'INT8MULTIRANGE': <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, 'NUMRANGE': <TokenType.NUMRANGE: 'NUMRANGE'>, 'NUMMULTIRANGE': <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, 'TSRANGE': <TokenType.TSRANGE: 'TSRANGE'>, 'TSMULTIRANGE': <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, 'TSTZRANGE': <TokenType.TSTZRANGE: 'TSTZRANGE'>, 'TSTZMULTIRANGE': <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, 'DATERANGE': <TokenType.DATERANGE: 'DATERANGE'>, 'DATEMULTIRANGE': <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, 'UNIQUE': <TokenType.UNIQUE: 'UNIQUE'>, 'VECTOR': <TokenType.VECTOR: 'VECTOR'>, 'STRUCT': <TokenType.STRUCT: 'STRUCT'>, 'SEQUENCE': <TokenType.SEQUENCE: 'SEQUENCE'>, 'VARIANT': <TokenType.VARIANT: 'VARIANT'>, 'ALTER': <TokenType.ALTER: 'ALTER'>, 'ANALYZE': <TokenType.COMMAND: 'COMMAND'>, 'CALL': <TokenType.COMMAND: 'COMMAND'>, 'COMMENT': <TokenType.COMMENT: 'COMMENT'>, 'EXPLAIN': <TokenType.COMMAND: 'COMMAND'>, 'GRANT': <TokenType.COMMAND: 'COMMAND'>, 'OPTIMIZE': <TokenType.COMMAND: 'COMMAND'>, 'PREPARE': <TokenType.COMMAND: 'COMMAND'>, 'VACUUM': <TokenType.COMMAND: 'COMMAND'>, 'USER-DEFINED': <TokenType.USERDEFINED: 'USERDEFINED'>, 'FOR VERSION': <TokenType.VERSION_SNAPSHOT: 'VERSION_SNAPSHOT'>, 'FOR TIMESTAMP': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>, 'BYTEINT': <TokenType.INT: 'INT'>, 'CHAR VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'CHARACTER VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'EXCLUDE': <TokenType.EXCEPT: 'EXCEPT'>, 'ILIKE ANY': <TokenType.ILIKE_ANY: 'ILIKE_ANY'>, 'LIKE ANY': <TokenType.LIKE_ANY: 'LIKE_ANY'>, 'MATCH_CONDITION': <TokenType.MATCH_CONDITION: 'MATCH_CONDITION'>, 'MATCH_RECOGNIZE': <TokenType.MATCH_RECOGNIZE: 'MATCH_RECOGNIZE'>, 'MINUS': <TokenType.EXCEPT: 'EXCEPT'>, 'NCHAR VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'PUT': <TokenType.COMMAND: 'COMMAND'>, 'REMOVE': <TokenType.COMMAND: 'COMMAND'>, 'RM': <TokenType.COMMAND: 'COMMAND'>, 'SAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'SQL_DOUBLE': <TokenType.DOUBLE: 'DOUBLE'>, 'SQL_VARCHAR': <TokenType.VARCHAR: 'VARCHAR'>, 'STORAGE INTEGRATION': <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, 'TAG': <TokenType.TAG: 'TAG'>, 'TIMESTAMP_TZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TOP': <TokenType.TOP: 'TOP'>, 'WAREHOUSE': <TokenType.WAREHOUSE: 'WAREHOUSE'>, 'STREAMLIT': <TokenType.STREAMLIT: 'STREAMLIT'>}
SINGLE_TOKENS = {'(': <TokenType.L_PAREN: 'L_PAREN'>, ')': <TokenType.R_PAREN: 'R_PAREN'>, '[': <TokenType.L_BRACKET: 'L_BRACKET'>, ']': <TokenType.R_BRACKET: 'R_BRACKET'>, '{': <TokenType.L_BRACE: 'L_BRACE'>, '}': <TokenType.R_BRACE: 'R_BRACE'>, '&': <TokenType.AMP: 'AMP'>, '^': <TokenType.CARET: 'CARET'>, ':': <TokenType.COLON: 'COLON'>, ',': <TokenType.COMMA: 'COMMA'>, '.': <TokenType.DOT: 'DOT'>, '-': <TokenType.DASH: 'DASH'>, '=': <TokenType.EQ: 'EQ'>, '>': <TokenType.GT: 'GT'>, '<': <TokenType.LT: 'LT'>, '%': <TokenType.MOD: 'MOD'>, '!': <TokenType.NOT: 'NOT'>, '|': <TokenType.PIPE: 'PIPE'>, '+': <TokenType.PLUS: 'PLUS'>, ';': <TokenType.SEMICOLON: 'SEMICOLON'>, '/': <TokenType.SLASH: 'SLASH'>, '\\': <TokenType.BACKSLASH: 'BACKSLASH'>, '*': <TokenType.STAR: 'STAR'>, '~': <TokenType.TILDA: 'TILDA'>, '?': <TokenType.PLACEHOLDER: 'PLACEHOLDER'>, '@': <TokenType.PARAMETER: 'PARAMETER'>, '#': <TokenType.HASH: 'HASH'>, "'": <TokenType.UNKNOWN: 'UNKNOWN'>, '`': <TokenType.UNKNOWN: 'UNKNOWN'>, '"': <TokenType.UNKNOWN: 'UNKNOWN'>, '$': <TokenType.PARAMETER: 'PARAMETER'>}
VAR_SINGLE_TOKENS = {'$'}
COMMANDS = {<TokenType.COMMAND: 'COMMAND'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.FETCH: 'FETCH'>}

##### Inherited Members

sqlglot.tokens.Tokenizer
  Tokenizer
  BIT_STRINGS
  BYTE_STRINGS
  HEREDOC_STRINGS
  UNICODE_STRINGS
  IDENTIFIERS
  IDENTIFIER_ESCAPES
  QUOTES
  HEREDOC_TAG_IS_IDENTIFIER
  HEREDOC_STRING_ALTERNATIVE
  STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS
  WHITE_SPACE
  COMMAND_PREFIX_TOKENS
  NUMERIC_LITERALS
  dialect
  reset
  tokenize
  tokenize_rs
  size
  sql
  tokens

class Snowflake.Generator(sqlglot.generator.Generator): View Source

     679    class Generator(generator.Generator):
     680        PARAMETER_TOKEN = "$"
     681        MATCHED_BY_SOURCE = False
     682        SINGLE_STRING_INTERVAL = True
     683        JOIN_HINTS = False
     684        TABLE_HINTS = False
     685        QUERY_HINTS = False
     686        AGGREGATE_FILTER_SUPPORTED = False
     687        SUPPORTS_TABLE_COPY = False
     688        COLLATE_IS_FUNC = True
     689        LIMIT_ONLY_LITERALS = True
     690        JSON_KEY_VALUE_PAIR_SEP = ","
     691        INSERT_OVERWRITE = " OVERWRITE INTO"
     692        STRUCT_DELIMITER = ("(", ")")
     693        COPY_PARAMS_ARE_WRAPPED = False
     694        COPY_PARAMS_EQ_REQUIRED = True
     695        STAR_EXCEPT = "EXCLUDE"
     696
     697        TRANSFORMS = {
     698            **generator.Generator.TRANSFORMS,
     699            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
     700            exp.ArgMax: rename_func("MAX_BY"),
     701            exp.ArgMin: rename_func("MIN_BY"),
     702            exp.Array: inline_array_sql,
     703            exp.ArrayConcat: rename_func("ARRAY_CAT"),
     704            exp.ArrayContains: lambda self, e: self.func("ARRAY_CONTAINS", e.expression, e.this),
     705            exp.AtTimeZone: lambda self, e: self.func(
     706                "CONVERT_TIMEZONE", e.args.get("zone"), e.this
     707            ),
     708            exp.BitwiseXor: rename_func("BITXOR"),
     709            exp.Create: transforms.preprocess([_flatten_structured_types_unless_iceberg]),
     710            exp.DateAdd: date_delta_sql("DATEADD"),
     711            exp.DateDiff: date_delta_sql("DATEDIFF"),
     712            exp.DateStrToDate: datestrtodate_sql,
     713            exp.DayOfMonth: rename_func("DAYOFMONTH"),
     714            exp.DayOfWeek: rename_func("DAYOFWEEK"),
     715            exp.DayOfYear: rename_func("DAYOFYEAR"),
     716            exp.Explode: rename_func("FLATTEN"),
     717            exp.Extract: rename_func("DATE_PART"),
     718            exp.FromTimeZone: lambda self, e: self.func(
     719                "CONVERT_TIMEZONE", e.args.get("zone"), "'UTC'", e.this
     720            ),
     721            exp.GenerateSeries: lambda self, e: self.func(
     722                "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step")
     723            ),
     724            exp.GroupConcat: rename_func("LISTAGG"),
     725            exp.If: if_sql(name="IFF", false_value="NULL"),
     726            exp.JSONExtract: lambda self, e: self.func("GET_PATH", e.this, e.expression),
     727            exp.JSONExtractScalar: lambda self, e: self.func(
     728                "JSON_EXTRACT_PATH_TEXT", e.this, e.expression
     729            ),
     730            exp.JSONObject: lambda self, e: self.func("OBJECT_CONSTRUCT_KEEP_NULL", *e.expressions),
     731            exp.JSONPathRoot: lambda *_: "",
     732            exp.LogicalAnd: rename_func("BOOLAND_AGG"),
     733            exp.LogicalOr: rename_func("BOOLOR_AGG"),
     734            exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     735            exp.Max: max_or_greatest,
     736            exp.Min: min_or_least,
     737            exp.ParseJSON: lambda self, e: self.func(
     738                "TRY_PARSE_JSON" if e.args.get("safe") else "PARSE_JSON", e.this
     739            ),
     740            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
     741            exp.PercentileCont: transforms.preprocess(
     742                [transforms.add_within_group_for_percentiles]
     743            ),
     744            exp.PercentileDisc: transforms.preprocess(
     745                [transforms.add_within_group_for_percentiles]
     746            ),
     747            exp.Pivot: transforms.preprocess([_unqualify_unpivot_columns]),
     748            exp.RegexpILike: _regexpilike_sql,
     749            exp.Rand: rename_func("RANDOM"),
     750            exp.Select: transforms.preprocess(
     751                [
     752                    transforms.eliminate_distinct_on,
     753                    transforms.explode_to_unnest(),
     754                    transforms.eliminate_semi_and_anti_joins,
     755                ]
     756            ),
     757            exp.SHA: rename_func("SHA1"),
     758            exp.StarMap: rename_func("OBJECT_CONSTRUCT"),
     759            exp.StartsWith: rename_func("STARTSWITH"),
     760            exp.StrPosition: lambda self, e: self.func(
     761                "POSITION", e.args.get("substr"), e.this, e.args.get("position")
     762            ),
     763            exp.StrToTime: lambda self, e: self.func("TO_TIMESTAMP", e.this, self.format_time(e)),
     764            exp.Stuff: rename_func("INSERT"),
     765            exp.TimeAdd: date_delta_sql("TIMEADD"),
     766            exp.TimestampDiff: lambda self, e: self.func(
     767                "TIMESTAMPDIFF", e.unit, e.expression, e.this
     768            ),
     769            exp.TimestampTrunc: timestamptrunc_sql(),
     770            exp.TimeStrToTime: timestrtotime_sql,
     771            exp.TimeToStr: lambda self, e: self.func(
     772                "TO_CHAR", exp.cast(e.this, exp.DataType.Type.TIMESTAMP), self.format_time(e)
     773            ),
     774            exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})",
     775            exp.ToArray: rename_func("TO_ARRAY"),
     776            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
     777            exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression),
     778            exp.TsOrDsAdd: date_delta_sql("DATEADD", cast=True),
     779            exp.TsOrDsDiff: date_delta_sql("DATEDIFF"),
     780            exp.TsOrDsToDate: lambda self, e: self.func(
     781                "TRY_TO_DATE" if e.args.get("safe") else "TO_DATE", e.this, self.format_time(e)
     782            ),
     783            exp.UnixToTime: rename_func("TO_TIMESTAMP"),
     784            exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"),
     785            exp.WeekOfYear: rename_func("WEEKOFYEAR"),
     786            exp.Xor: rename_func("BOOLXOR"),
     787        }
     788
     789        SUPPORTED_JSON_PATH_PARTS = {
     790            exp.JSONPathKey,
     791            exp.JSONPathRoot,
     792            exp.JSONPathSubscript,
     793        }
     794
     795        TYPE_MAPPING = {
     796            **generator.Generator.TYPE_MAPPING,
     797            exp.DataType.Type.NESTED: "OBJECT",
     798            exp.DataType.Type.STRUCT: "OBJECT",
     799        }
     800
     801        PROPERTIES_LOCATION = {
     802            **generator.Generator.PROPERTIES_LOCATION,
     803            exp.SetProperty: exp.Properties.Location.UNSUPPORTED,
     804            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
     805        }
     806
     807        UNSUPPORTED_VALUES_EXPRESSIONS = {
     808            exp.Map,
     809            exp.StarMap,
     810            exp.Struct,
     811            exp.VarMap,
     812        }
     813
     814        def with_properties(self, properties: exp.Properties) -> str:
     815            return self.properties(properties, wrapped=False, prefix=self.sep(""), sep=" ")
     816
     817        def values_sql(self, expression: exp.Values, values_as_table: bool = True) -> str:
     818            if expression.find(*self.UNSUPPORTED_VALUES_EXPRESSIONS):
     819                values_as_table = False
     820
     821            return super().values_sql(expression, values_as_table=values_as_table)
     822
     823        def datatype_sql(self, expression: exp.DataType) -> str:
     824            expressions = expression.expressions
     825            if (
     826                expressions
     827                and expression.is_type(*exp.DataType.STRUCT_TYPES)
     828                and any(isinstance(field_type, exp.DataType) for field_type in expressions)
     829            ):
     830                # The correct syntax is OBJECT [ (<key> <value_type [NOT NULL] [, ...]) ]
     831                return "OBJECT"
     832
     833            return super().datatype_sql(expression)
     834
     835        def tonumber_sql(self, expression: exp.ToNumber) -> str:
     836            return self.func(
     837                "TO_NUMBER",
     838                expression.this,
     839                expression.args.get("format"),
     840                expression.args.get("precision"),
     841                expression.args.get("scale"),
     842            )
     843
     844        def timestampfromparts_sql(self, expression: exp.TimestampFromParts) -> str:
     845            milli = expression.args.get("milli")
     846            if milli is not None:
     847                milli_to_nano = milli.pop() * exp.Literal.number(1000000)
     848                expression.set("nano", milli_to_nano)
     849
     850            return rename_func("TIMESTAMP_FROM_PARTS")(self, expression)
     851
     852        def trycast_sql(self, expression: exp.TryCast) -> str:
     853            value = expression.this
     854
     855            if value.type is None:
     856                from sqlglot.optimizer.annotate_types import annotate_types
     857
     858                value = annotate_types(value)
     859
     860            if value.is_type(*exp.DataType.TEXT_TYPES, exp.DataType.Type.UNKNOWN):
     861                return super().trycast_sql(expression)
     862
     863            # TRY_CAST only works for string values in Snowflake
     864            return self.cast_sql(expression)
     865
     866        def log_sql(self, expression: exp.Log) -> str:
     867            if not expression.expression:
     868                return self.func("LN", expression.this)
     869
     870            return super().log_sql(expression)
     871
     872        def unnest_sql(self, expression: exp.Unnest) -> str:
     873            unnest_alias = expression.args.get("alias")
     874            offset = expression.args.get("offset")
     875
     876            columns = [
     877                exp.to_identifier("seq"),
     878                exp.to_identifier("key"),
     879                exp.to_identifier("path"),
     880                offset.pop() if isinstance(offset, exp.Expression) else exp.to_identifier("index"),
     881                seq_get(unnest_alias.columns if unnest_alias else [], 0)
     882                or exp.to_identifier("value"),
     883                exp.to_identifier("this"),
     884            ]
     885
     886            if unnest_alias:
     887                unnest_alias.set("columns", columns)
     888            else:
     889                unnest_alias = exp.TableAlias(this="_u", columns=columns)
     890
     891            explode = f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))"
     892            alias = self.sql(unnest_alias)
     893            alias = f" AS {alias}" if alias else ""
     894            return f"{explode}{alias}"
     895
     896        def show_sql(self, expression: exp.Show) -> str:
     897            terse = "TERSE " if expression.args.get("terse") else ""
     898            history = " HISTORY" if expression.args.get("history") else ""
     899            like = self.sql(expression, "like")
     900            like = f" LIKE {like}" if like else ""
     901
     902            scope = self.sql(expression, "scope")
     903            scope = f" {scope}" if scope else ""
     904
     905            scope_kind = self.sql(expression, "scope_kind")
     906            if scope_kind:
     907                scope_kind = f" IN {scope_kind}"
     908
     909            starts_with = self.sql(expression, "starts_with")
     910            if starts_with:
     911                starts_with = f" STARTS WITH {starts_with}"
     912
     913            limit = self.sql(expression, "limit")
     914
     915            from_ = self.sql(expression, "from")
     916            if from_:
     917                from_ = f" FROM {from_}"
     918
     919            return f"SHOW {terse}{expression.name}{history}{like}{scope_kind}{scope}{starts_with}{limit}{from_}"
     920
     921        def regexpextract_sql(self, expression: exp.RegexpExtract) -> str:
     922            # Other dialects don't support all of the following parameters, so we need to
     923            # generate default values as necessary to ensure the transpilation is correct
     924            group = expression.args.get("group")
     925            parameters = expression.args.get("parameters") or (group and exp.Literal.string("c"))
     926            occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1))
     927            position = expression.args.get("position") or (occurrence and exp.Literal.number(1))
     928
     929            return self.func(
     930                "REGEXP_SUBSTR",
     931                expression.this,
     932                expression.expression,
     933                position,
     934                occurrence,
     935                parameters,
     936                group,
     937            )
     938
     939        def except_op(self, expression: exp.Except) -> str:
     940            if not expression.args.get("distinct"):
     941                self.unsupported("EXCEPT with All is not supported in Snowflake")
     942            return super().except_op(expression)
     943
     944        def intersect_op(self, expression: exp.Intersect) -> str:
     945            if not expression.args.get("distinct"):
     946                self.unsupported("INTERSECT with All is not supported in Snowflake")
     947            return super().intersect_op(expression)
     948
     949        def describe_sql(self, expression: exp.Describe) -> str:
     950            # Default to table if kind is unknown
     951            kind_value = expression.args.get("kind") or "TABLE"
     952            kind = f" {kind_value}" if kind_value else ""
     953            this = f" {self.sql(expression, 'this')}"
     954            expressions = self.expressions(expression, flat=True)
     955            expressions = f" {expressions}" if expressions else ""
     956            return f"DESCRIBE{kind}{this}{expressions}"
     957
     958        def generatedasidentitycolumnconstraint_sql(
     959            self, expression: exp.GeneratedAsIdentityColumnConstraint
     960        ) -> str:
     961            start = expression.args.get("start")
     962            start = f" START {start}" if start else ""
     963            increment = expression.args.get("increment")
     964            increment = f" INCREMENT {increment}" if increment else ""
     965            return f"AUTOINCREMENT{start}{increment}"
     966
     967        def swaptable_sql(self, expression: exp.SwapTable) -> str:
     968            this = self.sql(expression, "this")
     969            return f"SWAP WITH {this}"
     970
     971        def cluster_sql(self, expression: exp.Cluster) -> str:
     972            return f"CLUSTER BY ({self.expressions(expression, flat=True)})"
     973
     974        def struct_sql(self, expression: exp.Struct) -> str:
     975            keys = []
     976            values = []
     977
     978            for i, e in enumerate(expression.expressions):
     979                if isinstance(e, exp.PropertyEQ):
     980                    keys.append(
     981                        exp.Literal.string(e.name) if isinstance(e.this, exp.Identifier) else e.this
     982                    )
     983                    values.append(e.expression)
     984                else:
     985                    keys.append(exp.Literal.string(f"_{i}"))
     986                    values.append(e)
     987
     988            return self.func("OBJECT_CONSTRUCT", *flatten(zip(keys, values)))
     989
     990        def approxquantile_sql(self, expression: exp.ApproxQuantile) -> str:
     991            if expression.args.get("weight") or expression.args.get("accuracy"):
     992                self.unsupported(
     993                    "APPROX_PERCENTILE with weight and/or accuracy arguments are not supported in Snowflake"
     994                )
     995
     996            return self.func("APPROX_PERCENTILE", expression.this, expression.args.get("quantile"))
     997
     998        def alterset_sql(self, expression: exp.AlterSet) -> str:
     999            exprs = self.expressions(expression, flat=True)
    1000            exprs = f" {exprs}" if exprs else ""
    1001            file_format = self.expressions(expression, key="file_format", flat=True, sep=" ")
    1002            file_format = f" STAGE_FILE_FORMAT = ({file_format})" if file_format else ""
    1003            copy_options = self.expressions(expression, key="copy_options", flat=True, sep=" ")
    1004            copy_options = f" STAGE_COPY_OPTIONS = ({copy_options})" if copy_options else ""
    1005            tag = self.expressions(expression, key="tag", flat=True)
    1006            tag = f" TAG {tag}" if tag else ""
    1007
    1008            return f"SET{exprs}{file_format}{copy_options}{tag}"

Generator converts a given syntax tree to the corresponding SQL string.

###### Arguments:

- pretty: Whether to format the produced SQL string. Default: False.
- identify: Determines when an identifier should be quoted. Possible values are: False (default): Never quote, except in cases where it's mandatory by the dialect. True or 'always': Always quote. 'safe': Only quote identifiers that are case insensitive.
- normalize: Whether to normalize identifiers to lowercase. Default: False.
- pad: The pad size in a formatted string. For example, this affects the indentation of a projection in a query, relative to its nesting level. Default: 2.
- indent: The indentation size in a formatted string. For example, this affects the indentation of subqueries and filters under a `WHERE` clause. Default: 2.
- normalize_functions: How to normalize function names. Possible values are: "upper" or True (default): Convert names to uppercase. "lower": Convert names to lowercase. False: Disables function name normalization.
- unsupported_level: Determines the generator's behavior when it encounters unsupported expressions. Default ErrorLevel.WARN.
- max_unsupported: Maximum number of unsupported messages to include in a raised UnsupportedError. This is only relevant if unsupported_level is ErrorLevel.RAISE. Default: 3
- leading_comma: Whether the comma is leading or trailing in select expressions. This is only relevant when generating in pretty mode. Default: False
- max_text_width: The max number of characters in a segment before creating new lines in pretty mode. The default is on the smaller end because the length only represents a segment and not the true line length. Default: 80
- comments: Whether to preserve comments in the output SQL code. Default: True

PARAMETER_TOKEN = '$'
MATCHED_BY_SOURCE = False
SINGLE_STRING_INTERVAL = True
JOIN_HINTS = False
TABLE_HINTS = False
QUERY_HINTS = False
AGGREGATE_FILTER_SUPPORTED = False
SUPPORTS_TABLE_COPY = False
COLLATE_IS_FUNC = True
LIMIT_ONLY_LITERALS = True
JSON_KEY_VALUE_PAIR_SEP = ','
INSERT_OVERWRITE = ' OVERWRITE INTO'
STRUCT_DELIMITER = ('(', ')')
COPY_PARAMS_ARE_WRAPPED = False
COPY_PARAMS_EQ_REQUIRED = True
STAR_EXCEPT = 'EXCLUDE'
TRANSFORMS = {<class 'sqlglot.expressions.JSONPathKey'>: <function <lambda>>, <class 'sqlglot.expressions.JSONPathRoot'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.JSONPathSubscript'>: <function <lambda>>, <class 'sqlglot.expressions.AllowedValuesProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.AutoRefreshProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.BackupProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CaseSpecificColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CollateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CommentColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ConnectByRoot'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DateFormatColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DefaultColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DynamicProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EncodeColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EphemeralColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExcludeColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExternalProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.GlobalProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.HeapProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IcebergProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InheritsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InlineLengthColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IntervalSpan'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.JSONExtract'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.JSONExtractScalar'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.LanguageProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LocationProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LogProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.MaterializedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NonClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NotForReplicationColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnCommitProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnUpdateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OutputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PathColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ProjectionPolicyColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ReturnsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SampleProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SecureProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SetConfigProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SettingsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SharingProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SqlReadWriteProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StabilityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StrictProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TemporaryProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TagColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TitleColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Timestamp'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ToMap'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ToTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransformModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransientProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UppercaseColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UnloggedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.ViewAttributeProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VolatileProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithSchemaBindingProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithOperator'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ApproxDistinct'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArgMax'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArgMin'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Array'>: <function inline_array_sql>, <class 'sqlglot.expressions.ArrayConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArrayContains'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.AtTimeZone'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.BitwiseXor'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Create'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.DateAdd'>: <function date_delta_sql.<locals>._delta_sql>, <class 'sqlglot.expressions.DateDiff'>: <function date_delta_sql.<locals>._delta_sql>, <class 'sqlglot.expressions.DateStrToDate'>: <function datestrtodate_sql>, <class 'sqlglot.expressions.DayOfMonth'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DayOfWeek'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DayOfYear'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Explode'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Extract'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.FromTimeZone'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.GenerateSeries'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.If'>: <function if_sql.<locals>._if_sql>, <class 'sqlglot.expressions.JSONObject'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.LogicalAnd'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.LogicalOr'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Map'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Max'>: <function max_or_greatest>, <class 'sqlglot.expressions.Min'>: <function min_or_least>, <class 'sqlglot.expressions.ParseJSON'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.PartitionedByProperty'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.PercentileCont'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.PercentileDisc'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.Pivot'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.RegexpILike'>: <function _regexpilike_sql>, <class 'sqlglot.expressions.Rand'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Select'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.SHA'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.StarMap'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.StartsWith'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.StrPosition'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.StrToTime'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Stuff'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeAdd'>: <function date_delta_sql.<locals>._delta_sql>, <class 'sqlglot.expressions.TimestampDiff'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TimestampTrunc'>: <function timestamptrunc_sql.<locals>._timestamptrunc_sql>, <class 'sqlglot.expressions.TimeStrToTime'>: <function timestrtotime_sql>, <class 'sqlglot.expressions.TimeToStr'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TimeToUnix'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.ToArray'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ToChar'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Trim'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TsOrDsAdd'>: <function date_delta_sql.<locals>._delta_sql>, <class 'sqlglot.expressions.TsOrDsDiff'>: <function date_delta_sql.<locals>._delta_sql>, <class 'sqlglot.expressions.TsOrDsToDate'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.UnixToTime'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.WeekOfYear'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Xor'>: <function rename_func.<locals>.<lambda>>}
SUPPORTED_JSON_PATH_PARTS = {<class 'sqlglot.expressions.JSONPathKey'>, <class 'sqlglot.expressions.JSONPathSubscript'>, <class 'sqlglot.expressions.JSONPathRoot'>}
TYPE_MAPPING = {<Type.NCHAR: 'NCHAR'>: 'CHAR', <Type.NVARCHAR: 'NVARCHAR'>: 'VARCHAR', <Type.MEDIUMTEXT: 'MEDIUMTEXT'>: 'TEXT', <Type.LONGTEXT: 'LONGTEXT'>: 'TEXT', <Type.TINYTEXT: 'TINYTEXT'>: 'TEXT', <Type.MEDIUMBLOB: 'MEDIUMBLOB'>: 'BLOB', <Type.LONGBLOB: 'LONGBLOB'>: 'BLOB', <Type.TINYBLOB: 'TINYBLOB'>: 'BLOB', <Type.INET: 'INET'>: 'INET', <Type.ROWVERSION: 'ROWVERSION'>: 'VARBINARY', <Type.NESTED: 'NESTED'>: 'OBJECT', <Type.STRUCT: 'STRUCT'>: 'OBJECT'}
PROPERTIES_LOCATION = {<class 'sqlglot.expressions.AllowedValuesProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.AlgorithmProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.AutoIncrementProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.AutoRefreshProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.BackupProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.BlockCompressionProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CharacterSetProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ChecksumProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CollateProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Cluster'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ClusteredByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DataBlocksizeProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.DataDeletionProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DefinerProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.DictRange'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DictProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DynamicProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.DistKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DistStyleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.EngineProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExternalProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.FallbackProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.FileFormatProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.FreespaceProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.GlobalProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.HeapProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.InheritsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.IcebergProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.InputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.IsolatedLoadingProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.JournalProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.LanguageProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LikeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LocationProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LockProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LockingProperty'>: <Location.POST_ALIAS: 'POST_ALIAS'>, <class 'sqlglot.expressions.LogProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.MaterializedProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.MergeBlockRatioProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.OnProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OnCommitProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.Order'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OutputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PartitionedByProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.PartitionedOfProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PrimaryKey'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Property'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ReturnsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatDelimitedProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatSerdeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SampleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SchemaCommentProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SecureProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.SerdeProperties'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Set'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SettingsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SetProperty'>: <Location.UNSUPPORTED: 'UNSUPPORTED'>, <class 'sqlglot.expressions.SetConfigProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SharingProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.SequenceProperties'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.SortKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SqlReadWriteProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.StabilityProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.StrictProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TemporaryProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.ToTableProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TransientProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.TransformModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.MergeTreeTTL'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.UnloggedProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.ViewAttributeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.VolatileProperty'>: <Location.UNSUPPORTED: 'UNSUPPORTED'>, <class 'sqlglot.expressions.WithDataProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.WithSchemaBindingProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.WithSystemVersioningProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>}
UNSUPPORTED_VALUES_EXPRESSIONS = {<class 'sqlglot.expressions.Map'>, <class 'sqlglot.expressions.StarMap'>, <class 'sqlglot.expressions.VarMap'>, <class 'sqlglot.expressions.Struct'>}
def with_properties(self, properties: sqlglot.expressions.Properties) -> str: View Source

    814        def with_properties(self, properties: exp.Properties) -> str:
    815            return self.properties(properties, wrapped=False, prefix=self.sep(""), sep=" ")

def values_sql( self, expression: sqlglot.expressions.Values, values_as_table: bool = True) -> str: View Source

    817        def values_sql(self, expression: exp.Values, values_as_table: bool = True) -> str:
    818            if expression.find(*self.UNSUPPORTED_VALUES_EXPRESSIONS):
    819                values_as_table = False
    820
    821            return super().values_sql(expression, values_as_table=values_as_table)

def datatype_sql(self, expression: sqlglot.expressions.DataType) -> str: View Source

    823        def datatype_sql(self, expression: exp.DataType) -> str:
    824            expressions = expression.expressions
    825            if (
    826                expressions
    827                and expression.is_type(*exp.DataType.STRUCT_TYPES)
    828                and any(isinstance(field_type, exp.DataType) for field_type in expressions)
    829            ):
    830                # The correct syntax is OBJECT [ (<key> <value_type [NOT NULL] [, ...]) ]
    831                return "OBJECT"
    832
    833            return super().datatype_sql(expression)

def tonumber_sql(self, expression: sqlglot.expressions.ToNumber) -> str: View Source

    835        def tonumber_sql(self, expression: exp.ToNumber) -> str:
    836            return self.func(
    837                "TO_NUMBER",
    838                expression.this,
    839                expression.args.get("format"),
    840                expression.args.get("precision"),
    841                expression.args.get("scale"),
    842            )

def timestampfromparts_sql(self, expression: sqlglot.expressions.TimestampFromParts) -> str: View Source

    844        def timestampfromparts_sql(self, expression: exp.TimestampFromParts) -> str:
    845            milli = expression.args.get("milli")
    846            if milli is not None:
    847                milli_to_nano = milli.pop() * exp.Literal.number(1000000)
    848                expression.set("nano", milli_to_nano)
    849
    850            return rename_func("TIMESTAMP_FROM_PARTS")(self, expression)

def trycast_sql(self, expression: sqlglot.expressions.TryCast) -> str: View Source

    852        def trycast_sql(self, expression: exp.TryCast) -> str:
    853            value = expression.this
    854
    855            if value.type is None:
    856                from sqlglot.optimizer.annotate_types import annotate_types
    857
    858                value = annotate_types(value)
    859
    860            if value.is_type(*exp.DataType.TEXT_TYPES, exp.DataType.Type.UNKNOWN):
    861                return super().trycast_sql(expression)
    862
    863            # TRY_CAST only works for string values in Snowflake
    864            return self.cast_sql(expression)

def log_sql(self, expression: sqlglot.expressions.Log) -> str: View Source

    866        def log_sql(self, expression: exp.Log) -> str:
    867            if not expression.expression:
    868                return self.func("LN", expression.this)
    869
    870            return super().log_sql(expression)

def unnest_sql(self, expression: sqlglot.expressions.Unnest) -> str: View Source

    872        def unnest_sql(self, expression: exp.Unnest) -> str:
    873            unnest_alias = expression.args.get("alias")
    874            offset = expression.args.get("offset")
    875
    876            columns = [
    877                exp.to_identifier("seq"),
    878                exp.to_identifier("key"),
    879                exp.to_identifier("path"),
    880                offset.pop() if isinstance(offset, exp.Expression) else exp.to_identifier("index"),
    881                seq_get(unnest_alias.columns if unnest_alias else [], 0)
    882                or exp.to_identifier("value"),
    883                exp.to_identifier("this"),
    884            ]
    885
    886            if unnest_alias:
    887                unnest_alias.set("columns", columns)
    888            else:
    889                unnest_alias = exp.TableAlias(this="_u", columns=columns)
    890
    891            explode = f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))"
    892            alias = self.sql(unnest_alias)
    893            alias = f" AS {alias}" if alias else ""
    894            return f"{explode}{alias}"

def show_sql(self, expression: sqlglot.expressions.Show) -> str: View Source

    896        def show_sql(self, expression: exp.Show) -> str:
    897            terse = "TERSE " if expression.args.get("terse") else ""
    898            history = " HISTORY" if expression.args.get("history") else ""
    899            like = self.sql(expression, "like")
    900            like = f" LIKE {like}" if like else ""
    901
    902            scope = self.sql(expression, "scope")
    903            scope = f" {scope}" if scope else ""
    904
    905            scope_kind = self.sql(expression, "scope_kind")
    906            if scope_kind:
    907                scope_kind = f" IN {scope_kind}"
    908
    909            starts_with = self.sql(expression, "starts_with")
    910            if starts_with:
    911                starts_with = f" STARTS WITH {starts_with}"
    912
    913            limit = self.sql(expression, "limit")
    914
    915            from_ = self.sql(expression, "from")
    916            if from_:
    917                from_ = f" FROM {from_}"
    918
    919            return f"SHOW {terse}{expression.name}{history}{like}{scope_kind}{scope}{starts_with}{limit}{from_}"

def regexpextract_sql(self, expression: sqlglot.expressions.RegexpExtract) -> str: View Source

    921        def regexpextract_sql(self, expression: exp.RegexpExtract) -> str:
    922            # Other dialects don't support all of the following parameters, so we need to
    923            # generate default values as necessary to ensure the transpilation is correct
    924            group = expression.args.get("group")
    925            parameters = expression.args.get("parameters") or (group and exp.Literal.string("c"))
    926            occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1))
    927            position = expression.args.get("position") or (occurrence and exp.Literal.number(1))
    928
    929            return self.func(
    930                "REGEXP_SUBSTR",
    931                expression.this,
    932                expression.expression,
    933                position,
    934                occurrence,
    935                parameters,
    936                group,
    937            )

def except_op(self, expression: sqlglot.expressions.Except) -> str: View Source

    939        def except_op(self, expression: exp.Except) -> str:
    940            if not expression.args.get("distinct"):
    941                self.unsupported("EXCEPT with All is not supported in Snowflake")
    942            return super().except_op(expression)

def intersect_op(self, expression: sqlglot.expressions.Intersect) -> str: View Source

    944        def intersect_op(self, expression: exp.Intersect) -> str:
    945            if not expression.args.get("distinct"):
    946                self.unsupported("INTERSECT with All is not supported in Snowflake")
    947            return super().intersect_op(expression)

def describe_sql(self, expression: sqlglot.expressions.Describe) -> str: View Source

    949        def describe_sql(self, expression: exp.Describe) -> str:
    950            # Default to table if kind is unknown
    951            kind_value = expression.args.get("kind") or "TABLE"
    952            kind = f" {kind_value}" if kind_value else ""
    953            this = f" {self.sql(expression, 'this')}"
    954            expressions = self.expressions(expression, flat=True)
    955            expressions = f" {expressions}" if expressions else ""
    956            return f"DESCRIBE{kind}{this}{expressions}"

def generatedasidentitycolumnconstraint_sql( self, expression: sqlglot.expressions.GeneratedAsIdentityColumnConstraint) -> str: View Source

    958        def generatedasidentitycolumnconstraint_sql(
    959            self, expression: exp.GeneratedAsIdentityColumnConstraint
    960        ) -> str:
    961            start = expression.args.get("start")
    962            start = f" START {start}" if start else ""
    963            increment = expression.args.get("increment")
    964            increment = f" INCREMENT {increment}" if increment else ""
    965            return f"AUTOINCREMENT{start}{increment}"

def swaptable_sql(self, expression: sqlglot.expressions.SwapTable) -> str: View Source

    967        def swaptable_sql(self, expression: exp.SwapTable) -> str:
    968            this = self.sql(expression, "this")
    969            return f"SWAP WITH {this}"

def cluster_sql(self, expression: sqlglot.expressions.Cluster) -> str: View Source

    971        def cluster_sql(self, expression: exp.Cluster) -> str:
    972            return f"CLUSTER BY ({self.expressions(expression, flat=True)})"

def struct_sql(self, expression: sqlglot.expressions.Struct) -> str: View Source

    974        def struct_sql(self, expression: exp.Struct) -> str:
    975            keys = []
    976            values = []
    977
    978            for i, e in enumerate(expression.expressions):
    979                if isinstance(e, exp.PropertyEQ):
    980                    keys.append(
    981                        exp.Literal.string(e.name) if isinstance(e.this, exp.Identifier) else e.this
    982                    )
    983                    values.append(e.expression)
    984                else:
    985                    keys.append(exp.Literal.string(f"_{i}"))
    986                    values.append(e)
    987
    988            return self.func("OBJECT_CONSTRUCT", *flatten(zip(keys, values)))

def approxquantile_sql(self, expression: sqlglot.expressions.ApproxQuantile) -> str: View Source

    990        def approxquantile_sql(self, expression: exp.ApproxQuantile) -> str:
    991            if expression.args.get("weight") or expression.args.get("accuracy"):
    992                self.unsupported(
    993                    "APPROX_PERCENTILE with weight and/or accuracy arguments are not supported in Snowflake"
    994                )
    995
    996            return self.func("APPROX_PERCENTILE", expression.this, expression.args.get("quantile"))

def alterset_sql(self, expression: sqlglot.expressions.AlterSet) -> str: View Source

     998        def alterset_sql(self, expression: exp.AlterSet) -> str:
     999            exprs = self.expressions(expression, flat=True)
    1000            exprs = f" {exprs}" if exprs else ""
    1001            file_format = self.expressions(expression, key="file_format", flat=True, sep=" ")
    1002            file_format = f" STAGE_FILE_FORMAT = ({file_format})" if file_format else ""
    1003            copy_options = self.expressions(expression, key="copy_options", flat=True, sep=" ")
    1004            copy_options = f" STAGE_COPY_OPTIONS = ({copy_options})" if copy_options else ""
    1005            tag = self.expressions(expression, key="tag", flat=True)
    1006            tag = f" TAG {tag}" if tag else ""
    1007
    1008            return f"SET{exprs}{file_format}{copy_options}{tag}"

SELECT_KINDS: Tuple[str, ...] = ()
TRY_SUPPORTED = False
SUPPORTS_UESCAPE = False
AFTER_HAVING_MODIFIER_TRANSFORMS = {'windows': <function Generator.<lambda>>, 'qualify': <function Generator.<lambda>>}

##### Inherited Members

sqlglot.generator.Generator
  Generator
  NULL_ORDERING_SUPPORTED
  IGNORE_NULLS_IN_FUNC
  LOCKING_READS_SUPPORTED
  EXPLICIT_SET_OP
  WRAP_DERIVED_VALUES
  CREATE_FUNCTION_RETURN_AS
  INTERVAL_ALLOWS_PLURAL_FORM
  LIMIT_FETCH
  RENAME_TABLE_WITH_DB
  GROUPINGS_SEP
  INDEX_ON
  QUERY_HINT_SEP
  IS_BOOL_ALLOWED
  DUPLICATE_KEY_UPDATE_WITH_SET
  LIMIT_IS_TOP
  RETURNING_END
  EXTRACT_ALLOWS_QUOTES
  TZ_TO_WITH_TIME_ZONE
  NVL2_SUPPORTED
  VALUES_AS_TABLE
  ALTER_TABLE_INCLUDE_COLUMN_KEYWORD
  UNNEST_WITH_ORDINALITY
  SEMI_ANTI_JOIN_WITH_SIDE
  COMPUTED_COLUMN_WITH_TYPE
  TABLESAMPLE_REQUIRES_PARENS
  TABLESAMPLE_SIZE_IS_ROWS
  TABLESAMPLE_KEYWORDS
  TABLESAMPLE_WITH_METHOD
  TABLESAMPLE_SEED_KEYWORD
  DATA_TYPE_SPECIFIERS_ALLOWED
  ENSURE_BOOLS
  CTE_RECURSIVE_KEYWORD_REQUIRED
  SUPPORTS_SINGLE_ARG_CONCAT
  LAST_DAY_SUPPORTS_DATE_PART
  SUPPORTS_TABLE_ALIAS_COLUMNS
  UNPIVOT_ALIASES_ARE_IDENTIFIERS
  SUPPORTS_SELECT_INTO
  SUPPORTS_UNLOGGED_TABLES
  SUPPORTS_CREATE_TABLE_LIKE
  LIKE_PROPERTY_INSIDE_SCHEMA
  MULTI_ARG_DISTINCT
  JSON_TYPE_REQUIRED_FOR_EXTRACTION
  JSON_PATH_BRACKETED_KEY_SUPPORTED
  JSON_PATH_SINGLE_QUOTE_ESCAPE
  CAN_IMPLEMENT_ARRAY_ANY
  SUPPORTS_TO_NUMBER
  SET_OP_MODIFIERS
  COPY_HAS_INTO_KEYWORD
  HEX_FUNC
  WITH_PROPERTIES_PREFIX
  QUOTE_JSON_PATH
  PAD_FILL_PATTERN_IS_REQUIRED
  PARSE_JSON_NAME
  TIME_PART_SINGULARS
  TOKEN_MAPPING
  NAMED_PLACEHOLDER_TOKEN
  RESERVED_KEYWORDS
  WITH_SEPARATED_COMMENTS
  EXCLUDE_COMMENTS
  UNWRAPPED_INTERVAL_VALUES
  PARAMETERIZABLE_TEXT_TYPES
  EXPRESSIONS_WITHOUT_NESTED_CTES
  SENTINEL_LINE_BREAK
  pretty
  identify
  normalize
  pad
  unsupported_level
  max_unsupported
  leading_comma
  max_text_width
  comments
  dialect
  normalize_functions
  unsupported_messages
  generate
  preprocess
  unsupported
  sep
  seg
  pad_comment
  maybe_comment
  wrap
  no_identify
  normalize_func
  indent
  sql
  uncache_sql
  cache_sql
  characterset_sql
  column_parts
  column_sql
  columnposition_sql
  columndef_sql
  columnconstraint_sql
  computedcolumnconstraint_sql
  autoincrementcolumnconstraint_sql
  compresscolumnconstraint_sql
  generatedasrowcolumnconstraint_sql
  periodforsystemtimeconstraint_sql
  notnullcolumnconstraint_sql
  transformcolumnconstraint_sql
  primarykeycolumnconstraint_sql
  uniquecolumnconstraint_sql
  createable_sql
  create_sql
  sequenceproperties_sql
  clone_sql
  heredoc_sql
  prepend_ctes
  with_sql
  cte_sql
  tablealias_sql
  bitstring_sql
  hexstring_sql
  bytestring_sql
  unicodestring_sql
  rawstring_sql
  datatypeparam_sql
  directory_sql
  delete_sql
  drop_sql
  except_sql
  fetch_sql
  filter_sql
  hint_sql
  indexparameters_sql
  index_sql
  identifier_sql
  hex_sql
  lowerhex_sql
  inputoutputformat_sql
  national_sql
  partition_sql
  properties_sql
  root_properties
  properties
  locate_properties
  property_name
  property_sql
  likeproperty_sql
  fallbackproperty_sql
  journalproperty_sql
  freespaceproperty_sql
  checksumproperty_sql
  mergeblockratioproperty_sql
  datablocksizeproperty_sql
  blockcompressionproperty_sql
  isolatedloadingproperty_sql
  partitionboundspec_sql
  partitionedofproperty_sql
  lockingproperty_sql
  withdataproperty_sql
  withsystemversioningproperty_sql
  insert_sql
  intersect_sql
  introducer_sql
  kill_sql
  pseudotype_sql
  objectidentifier_sql
  onconflict_sql
  returning_sql
  rowformatdelimitedproperty_sql
  withtablehint_sql
  indextablehint_sql
  historicaldata_sql
  table_parts
  table_sql
  tablesample_sql
  pivot_sql
  version_sql
  tuple_sql
  update_sql
  var_sql
  into_sql
  from_sql
  group_sql
  having_sql
  connect_sql
  prior_sql
  join_sql
  lambda_sql
  lateral_op
  lateral_sql
  limit_sql
  offset_sql
  setitem_sql
  set_sql
  pragma_sql
  lock_sql
  literal_sql
  escape_str
  loaddata_sql
  null_sql
  boolean_sql
  order_sql
  withfill_sql
  distribute_sql
  sort_sql
  ordered_sql
  matchrecognizemeasure_sql
  matchrecognize_sql
  query_modifiers
  options_modifier
  queryoption_sql
  offset_limit_modifiers
  after_limit_modifiers
  select_sql
  schema_sql
  schema_columns_sql
  star_sql
  parameter_sql
  sessionparameter_sql
  placeholder_sql
  subquery_sql
  qualify_sql
  set_operations
  union_sql
  union_op
  prewhere_sql
  where_sql
  window_sql
  partition_by_sql
  windowspec_sql
  withingroup_sql
  between_sql
  bracket_offset_expressions
  bracket_sql
  all_sql
  any_sql
  exists_sql
  case_sql
  constraint_sql
  nextvaluefor_sql
  extract_sql
  trim_sql
  convert_concat_args
  concat_sql
  concatws_sql
  check_sql
  foreignkey_sql
  primarykey_sql
  if_sql
  matchagainst_sql
  jsonkeyvalue_sql
  jsonpath_sql
  json_path_part
  formatjson_sql
  jsonobject_sql
  jsonobjectagg_sql
  jsonarray_sql
  jsonarrayagg_sql
  jsoncolumndef_sql
  jsonschema_sql
  jsontable_sql
  openjsoncolumndef_sql
  openjson_sql
  in_sql
  in_unnest_op
  interval_sql
  return_sql
  reference_sql
  anonymous_sql
  paren_sql
  neg_sql
  not_sql
  alias_sql
  pivotalias_sql
  aliases_sql
  atindex_sql
  attimezone_sql
  fromtimezone_sql
  add_sql
  and_sql
  or_sql
  xor_sql
  connector_sql
  bitwiseand_sql
  bitwiseleftshift_sql
  bitwisenot_sql
  bitwiseor_sql
  bitwiserightshift_sql
  bitwisexor_sql
  cast_sql
  currentdate_sql
  currenttimestamp_sql
  collate_sql
  command_sql
  comment_sql
  mergetreettlaction_sql
  mergetreettl_sql
  transaction_sql
  commit_sql
  rollback_sql
  altercolumn_sql
  alterdiststyle_sql
  altersortkey_sql
  renametable_sql
  renamecolumn_sql
  altertable_sql
  add_column_sql
  droppartition_sql
  addconstraint_sql
  distinct_sql
  ignorenulls_sql
  respectnulls_sql
  havingmax_sql
  intdiv_sql
  dpipe_sql
  div_sql
  overlaps_sql
  distance_sql
  dot_sql
  eq_sql
  propertyeq_sql
  escape_sql
  glob_sql
  gt_sql
  gte_sql
  ilike_sql
  ilikeany_sql
  is_sql
  like_sql
  likeany_sql
  similarto_sql
  lt_sql
  lte_sql
  mod_sql
  mul_sql
  neq_sql
  nullsafeeq_sql
  nullsafeneq_sql
  slice_sql
  sub_sql
  try_sql
  use_sql
  binary
  function_fallback_sql
  func
  format_args
  too_wide
  format_time
  expressions
  op_expressions
  naked_property
  tag_sql
  token_sql
  userdefinedfunction_sql
  joinhint_sql
  kwarg_sql
  when_sql
  merge_sql
  tochar_sql
  dictproperty_sql
  dictrange_sql
  dictsubproperty_sql
  oncluster_sql
  clusteredbyproperty_sql
  anyvalue_sql
  querytransform_sql
  indexconstraintoption_sql
  checkcolumnconstraint_sql
  indexcolumnconstraint_sql
  nvl2_sql
  comprehension_sql
  columnprefix_sql
  opclass_sql
  predict_sql
  forin_sql
  refresh_sql
  operator_sql
  toarray_sql
  tsordstotime_sql
  tsordstotimestamp_sql
  tsordstodate_sql
  unixdate_sql
  lastday_sql
  dateadd_sql
  arrayany_sql
  generateseries_sql
  partitionrange_sql
  truncatetable_sql
  convert_sql
  copyparameter_sql
  credentials_sql
  copy_sql
  semicolon_sql
  datadeletionproperty_sql
  maskingpolicycolumnconstraint_sql
  gapfill_sql
  scope_resolution
  scoperesolution_sql
  parsejson_sql
  length_sql
  rand_sql
  strtodate_sql
  strtotime_sql
  changes_sql
  pad_sql