sqlglot.dialects.bigquery API documentation

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# sqlglot.dialects.bigquery

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      1from __future__ import annotations
      2
      3import logging
      4import re
      5import typing as t
      6
      7from sqlglot import exp, generator, parser, tokens, transforms
      8from sqlglot.dialects.dialect import (
      9    Dialect,
     10    NormalizationStrategy,
     11    arg_max_or_min_no_count,
     12    binary_from_function,
     13    date_add_interval_sql,
     14    datestrtodate_sql,
     15    build_formatted_time,
     16    filter_array_using_unnest,
     17    if_sql,
     18    inline_array_unless_query,
     19    max_or_greatest,
     20    min_or_least,
     21    no_ilike_sql,
     22    build_date_delta_with_interval,
     23    regexp_replace_sql,
     24    rename_func,
     25    sha256_sql,
     26    timestrtotime_sql,
     27    ts_or_ds_add_cast,
     28    unit_to_var,
     29)
     30from sqlglot.helper import seq_get, split_num_words
     31from sqlglot.tokens import TokenType
     32
     33if t.TYPE_CHECKING:
     34    from sqlglot._typing import E, Lit
     35
     36logger = logging.getLogger("sqlglot")
     37
     38
     39def _derived_table_values_to_unnest(self: BigQuery.Generator, expression: exp.Values) -> str:
     40    if not expression.find_ancestor(exp.From, exp.Join):
     41        return self.values_sql(expression)
     42
     43    structs = []
     44    alias = expression.args.get("alias")
     45    for tup in expression.find_all(exp.Tuple):
     46        field_aliases = (
     47            alias.columns
     48            if alias and alias.columns
     49            else (f"_c{i}" for i in range(len(tup.expressions)))
     50        )
     51        expressions = [
     52            exp.PropertyEQ(this=exp.to_identifier(name), expression=fld)
     53            for name, fld in zip(field_aliases, tup.expressions)
     54        ]
     55        structs.append(exp.Struct(expressions=expressions))
     56
     57    # Due to `UNNEST_COLUMN_ONLY`, it is expected that the table alias be contained in the columns expression
     58    alias_name_only = exp.TableAlias(columns=[alias.this]) if alias else None
     59    return self.unnest_sql(
     60        exp.Unnest(expressions=[exp.array(*structs, copy=False)], alias=alias_name_only)
     61    )
     62
     63
     64def _returnsproperty_sql(self: BigQuery.Generator, expression: exp.ReturnsProperty) -> str:
     65    this = expression.this
     66    if isinstance(this, exp.Schema):
     67        this = f"{self.sql(this, 'this')} <{self.expressions(this)}>"
     68    else:
     69        this = self.sql(this)
     70    return f"RETURNS {this}"
     71
     72
     73def _create_sql(self: BigQuery.Generator, expression: exp.Create) -> str:
     74    returns = expression.find(exp.ReturnsProperty)
     75    if expression.kind == "FUNCTION" and returns and returns.args.get("is_table"):
     76        expression.set("kind", "TABLE FUNCTION")
     77
     78        if isinstance(expression.expression, (exp.Subquery, exp.Literal)):
     79            expression.set("expression", expression.expression.this)
     80
     81    return self.create_sql(expression)
     82
     83
     84# https://issuetracker.google.com/issues/162294746
     85# workaround for bigquery bug when grouping by an expression and then ordering
     86# WITH x AS (SELECT 1 y)
     87# SELECT y + 1 z
     88# FROM x
     89# GROUP BY x + 1
     90# ORDER by z
     91def _alias_ordered_group(expression: exp.Expression) -> exp.Expression:
     92    if isinstance(expression, exp.Select):
     93        group = expression.args.get("group")
     94        order = expression.args.get("order")
     95
     96        if group and order:
     97            aliases = {
     98                select.this: select.args["alias"]
     99                for select in expression.selects
    100                if isinstance(select, exp.Alias)
    101            }
    102
    103            for grouped in group.expressions:
    104                if grouped.is_int:
    105                    continue
    106                alias = aliases.get(grouped)
    107                if alias:
    108                    grouped.replace(exp.column(alias))
    109
    110    return expression
    111
    112
    113def _pushdown_cte_column_names(expression: exp.Expression) -> exp.Expression:
    114    """BigQuery doesn't allow column names when defining a CTE, so we try to push them down."""
    115    if isinstance(expression, exp.CTE) and expression.alias_column_names:
    116        cte_query = expression.this
    117
    118        if cte_query.is_star:
    119            logger.warning(
    120                "Can't push down CTE column names for star queries. Run the query through"
    121                " the optimizer or use 'qualify' to expand the star projections first."
    122            )
    123            return expression
    124
    125        column_names = expression.alias_column_names
    126        expression.args["alias"].set("columns", None)
    127
    128        for name, select in zip(column_names, cte_query.selects):
    129            to_replace = select
    130
    131            if isinstance(select, exp.Alias):
    132                select = select.this
    133
    134            # Inner aliases are shadowed by the CTE column names
    135            to_replace.replace(exp.alias_(select, name))
    136
    137    return expression
    138
    139
    140def _build_parse_timestamp(args: t.List) -> exp.StrToTime:
    141    this = build_formatted_time(exp.StrToTime, "bigquery")([seq_get(args, 1), seq_get(args, 0)])
    142    this.set("zone", seq_get(args, 2))
    143    return this
    144
    145
    146def _build_timestamp(args: t.List) -> exp.Timestamp:
    147    timestamp = exp.Timestamp.from_arg_list(args)
    148    timestamp.set("with_tz", True)
    149    return timestamp
    150
    151
    152def _build_date(args: t.List) -> exp.Date | exp.DateFromParts:
    153    expr_type = exp.DateFromParts if len(args) == 3 else exp.Date
    154    return expr_type.from_arg_list(args)
    155
    156
    157def _build_to_hex(args: t.List) -> exp.Hex | exp.MD5:
    158    # TO_HEX(MD5(..)) is common in BigQuery, so it's parsed into MD5 to simplify its transpilation
    159    arg = seq_get(args, 0)
    160    return exp.MD5(this=arg.this) if isinstance(arg, exp.MD5Digest) else exp.LowerHex(this=arg)
    161
    162
    163def _array_contains_sql(self: BigQuery.Generator, expression: exp.ArrayContains) -> str:
    164    return self.sql(
    165        exp.Exists(
    166            this=exp.select("1")
    167            .from_(exp.Unnest(expressions=[expression.left]).as_("_unnest", table=["_col"]))
    168            .where(exp.column("_col").eq(expression.right))
    169        )
    170    )
    171
    172
    173def _ts_or_ds_add_sql(self: BigQuery.Generator, expression: exp.TsOrDsAdd) -> str:
    174    return date_add_interval_sql("DATE", "ADD")(self, ts_or_ds_add_cast(expression))
    175
    176
    177def _ts_or_ds_diff_sql(self: BigQuery.Generator, expression: exp.TsOrDsDiff) -> str:
    178    expression.this.replace(exp.cast(expression.this, exp.DataType.Type.TIMESTAMP))
    179    expression.expression.replace(exp.cast(expression.expression, exp.DataType.Type.TIMESTAMP))
    180    unit = unit_to_var(expression)
    181    return self.func("DATE_DIFF", expression.this, expression.expression, unit)
    182
    183
    184def _unix_to_time_sql(self: BigQuery.Generator, expression: exp.UnixToTime) -> str:
    185    scale = expression.args.get("scale")
    186    timestamp = expression.this
    187
    188    if scale in (None, exp.UnixToTime.SECONDS):
    189        return self.func("TIMESTAMP_SECONDS", timestamp)
    190    if scale == exp.UnixToTime.MILLIS:
    191        return self.func("TIMESTAMP_MILLIS", timestamp)
    192    if scale == exp.UnixToTime.MICROS:
    193        return self.func("TIMESTAMP_MICROS", timestamp)
    194
    195    unix_seconds = exp.cast(
    196        exp.Div(this=timestamp, expression=exp.func("POW", 10, scale)), exp.DataType.Type.BIGINT
    197    )
    198    return self.func("TIMESTAMP_SECONDS", unix_seconds)
    199
    200
    201def _build_time(args: t.List) -> exp.Func:
    202    if len(args) == 1:
    203        return exp.TsOrDsToTime(this=args[0])
    204    if len(args) == 2:
    205        return exp.Time.from_arg_list(args)
    206    return exp.TimeFromParts.from_arg_list(args)
    207
    208
    209def _build_datetime(args: t.List) -> exp.Func:
    210    if len(args) == 1:
    211        return exp.TsOrDsToTimestamp.from_arg_list(args)
    212    if len(args) == 2:
    213        return exp.Datetime.from_arg_list(args)
    214    return exp.TimestampFromParts.from_arg_list(args)
    215
    216
    217def _str_to_datetime_sql(
    218    self: BigQuery.Generator, expression: exp.StrToDate | exp.StrToTime
    219) -> str:
    220    this = self.sql(expression, "this")
    221    dtype = "DATE" if isinstance(expression, exp.StrToDate) else "TIMESTAMP"
    222
    223    if expression.args.get("safe"):
    224        fmt = self.format_time(
    225            expression,
    226            self.dialect.INVERSE_FORMAT_MAPPING,
    227            self.dialect.INVERSE_FORMAT_TRIE,
    228        )
    229        return f"SAFE_CAST({this} AS {dtype} FORMAT {fmt})"
    230
    231    fmt = self.format_time(expression)
    232    return self.func(f"PARSE_{dtype}", fmt, this, expression.args.get("zone"))
    233
    234
    235class BigQuery(Dialect):
    236    WEEK_OFFSET = -1
    237    UNNEST_COLUMN_ONLY = True
    238    SUPPORTS_USER_DEFINED_TYPES = False
    239    SUPPORTS_SEMI_ANTI_JOIN = False
    240    LOG_BASE_FIRST = False
    241    HEX_LOWERCASE = True
    242    FORCE_EARLY_ALIAS_REF_EXPANSION = True
    243    EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True
    244
    245    # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#case_sensitivity
    246    NORMALIZATION_STRATEGY = NormalizationStrategy.CASE_INSENSITIVE
    247
    248    # bigquery udfs are case sensitive
    249    NORMALIZE_FUNCTIONS = False
    250
    251    # https://cloud.google.com/bigquery/docs/reference/standard-sql/format-elements#format_elements_date_time
    252    TIME_MAPPING = {
    253        "%D": "%m/%d/%y",
    254        "%E6S": "%S.%f",
    255        "%e": "%-d",
    256    }
    257
    258    FORMAT_MAPPING = {
    259        "DD": "%d",
    260        "MM": "%m",
    261        "MON": "%b",
    262        "MONTH": "%B",
    263        "YYYY": "%Y",
    264        "YY": "%y",
    265        "HH": "%I",
    266        "HH12": "%I",
    267        "HH24": "%H",
    268        "MI": "%M",
    269        "SS": "%S",
    270        "SSSSS": "%f",
    271        "TZH": "%z",
    272    }
    273
    274    # The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement
    275    # https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table
    276    PSEUDOCOLUMNS = {"_PARTITIONTIME", "_PARTITIONDATE"}
    277
    278    # All set operations require either a DISTINCT or ALL specifier
    279    SET_OP_DISTINCT_BY_DEFAULT = dict.fromkeys((exp.Except, exp.Intersect, exp.Union), None)
    280
    281    def normalize_identifier(self, expression: E) -> E:
    282        if (
    283            isinstance(expression, exp.Identifier)
    284            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    285        ):
    286            parent = expression.parent
    287            while isinstance(parent, exp.Dot):
    288                parent = parent.parent
    289
    290            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    291            # by default. The following check uses a heuristic to detect tables based on whether
    292            # they are qualified. This should generally be correct, because tables in BigQuery
    293            # must be qualified with at least a dataset, unless @@dataset_id is set.
    294            case_sensitive = (
    295                isinstance(parent, exp.UserDefinedFunction)
    296                or (
    297                    isinstance(parent, exp.Table)
    298                    and parent.db
    299                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    300                )
    301                or expression.meta.get("is_table")
    302            )
    303            if not case_sensitive:
    304                expression.set("this", expression.this.lower())
    305
    306        return expression
    307
    308    class Tokenizer(tokens.Tokenizer):
    309        QUOTES = ["'", '"', '"""', "'''"]
    310        COMMENTS = ["--", "#", ("/*", "*/")]
    311        IDENTIFIERS = ["`"]
    312        STRING_ESCAPES = ["\\"]
    313
    314        HEX_STRINGS = [("0x", ""), ("0X", "")]
    315
    316        BYTE_STRINGS = [
    317            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    318        ]
    319
    320        RAW_STRINGS = [
    321            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    322        ]
    323
    324        KEYWORDS = {
    325            **tokens.Tokenizer.KEYWORDS,
    326            "ANY TYPE": TokenType.VARIANT,
    327            "BEGIN": TokenType.COMMAND,
    328            "BEGIN TRANSACTION": TokenType.BEGIN,
    329            "BYTEINT": TokenType.INT,
    330            "BYTES": TokenType.BINARY,
    331            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    332            "DATETIME": TokenType.TIMESTAMP,
    333            "DECLARE": TokenType.COMMAND,
    334            "ELSEIF": TokenType.COMMAND,
    335            "EXCEPTION": TokenType.COMMAND,
    336            "FLOAT64": TokenType.DOUBLE,
    337            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    338            "MODEL": TokenType.MODEL,
    339            "NOT DETERMINISTIC": TokenType.VOLATILE,
    340            "RECORD": TokenType.STRUCT,
    341            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    342        }
    343        KEYWORDS.pop("DIV")
    344        KEYWORDS.pop("VALUES")
    345        KEYWORDS.pop("/*+")
    346
    347    class Parser(parser.Parser):
    348        PREFIXED_PIVOT_COLUMNS = True
    349        LOG_DEFAULTS_TO_LN = True
    350        SUPPORTS_IMPLICIT_UNNEST = True
    351
    352        FUNCTIONS = {
    353            **parser.Parser.FUNCTIONS,
    354            "DATE": _build_date,
    355            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    356            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    357            "DATE_TRUNC": lambda args: exp.DateTrunc(
    358                unit=exp.Literal.string(str(seq_get(args, 1))),
    359                this=seq_get(args, 0),
    360            ),
    361            "DATETIME": _build_datetime,
    362            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    363            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    364            "DIV": binary_from_function(exp.IntDiv),
    365            "FORMAT_DATE": lambda args: exp.TimeToStr(
    366                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    367            ),
    368            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    369            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    370                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    371            ),
    372            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    373            "MD5": exp.MD5Digest.from_arg_list,
    374            "TO_HEX": _build_to_hex,
    375            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    376                [seq_get(args, 1), seq_get(args, 0)]
    377            ),
    378            "PARSE_TIMESTAMP": _build_parse_timestamp,
    379            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    380            "REGEXP_EXTRACT": lambda args: exp.RegexpExtract(
    381                this=seq_get(args, 0),
    382                expression=seq_get(args, 1),
    383                position=seq_get(args, 2),
    384                occurrence=seq_get(args, 3),
    385                group=exp.Literal.number(1) if re.compile(args[1].name).groups == 1 else None,
    386            ),
    387            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    388            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    389            "SPLIT": lambda args: exp.Split(
    390                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    391                this=seq_get(args, 0),
    392                expression=seq_get(args, 1) or exp.Literal.string(","),
    393            ),
    394            "TIME": _build_time,
    395            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    396            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    397            "TIMESTAMP": _build_timestamp,
    398            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    399            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    400            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    401                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    402            ),
    403            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    404                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    405            ),
    406            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    407            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    408            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    409                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    410            ),
    411        }
    412
    413        FUNCTION_PARSERS = {
    414            **parser.Parser.FUNCTION_PARSERS,
    415            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    416        }
    417        FUNCTION_PARSERS.pop("TRIM")
    418
    419        NO_PAREN_FUNCTIONS = {
    420            **parser.Parser.NO_PAREN_FUNCTIONS,
    421            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    422        }
    423
    424        NESTED_TYPE_TOKENS = {
    425            *parser.Parser.NESTED_TYPE_TOKENS,
    426            TokenType.TABLE,
    427        }
    428
    429        PROPERTY_PARSERS = {
    430            **parser.Parser.PROPERTY_PARSERS,
    431            "NOT DETERMINISTIC": lambda self: self.expression(
    432                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    433            ),
    434            "OPTIONS": lambda self: self._parse_with_property(),
    435        }
    436
    437        CONSTRAINT_PARSERS = {
    438            **parser.Parser.CONSTRAINT_PARSERS,
    439            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    440        }
    441
    442        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    443        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    444
    445        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    446
    447        STATEMENT_PARSERS = {
    448            **parser.Parser.STATEMENT_PARSERS,
    449            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    450            TokenType.END: lambda self: self._parse_as_command(self._prev),
    451            TokenType.FOR: lambda self: self._parse_for_in(),
    452        }
    453
    454        BRACKET_OFFSETS = {
    455            "OFFSET": (0, False),
    456            "ORDINAL": (1, False),
    457            "SAFE_OFFSET": (0, True),
    458            "SAFE_ORDINAL": (1, True),
    459        }
    460
    461        def _parse_for_in(self) -> exp.ForIn:
    462            this = self._parse_range()
    463            self._match_text_seq("DO")
    464            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    465
    466        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    467            this = super()._parse_table_part(schema=schema) or self._parse_number()
    468
    469            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    470            if isinstance(this, exp.Identifier):
    471                table_name = this.name
    472                while self._match(TokenType.DASH, advance=False) and self._next:
    473                    text = ""
    474                    while self._curr and self._curr.token_type != TokenType.DOT:
    475                        self._advance()
    476                        text += self._prev.text
    477                    table_name += text
    478
    479                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    480            elif isinstance(this, exp.Literal):
    481                table_name = this.name
    482
    483                if self._is_connected() and self._parse_var(any_token=True):
    484                    table_name += self._prev.text
    485
    486                this = exp.Identifier(this=table_name, quoted=True)
    487
    488            return this
    489
    490        def _parse_table_parts(
    491            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    492        ) -> exp.Table:
    493            table = super()._parse_table_parts(
    494                schema=schema, is_db_reference=is_db_reference, wildcard=True
    495            )
    496
    497            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    498            if not table.catalog:
    499                if table.db:
    500                    parts = table.db.split(".")
    501                    if len(parts) == 2 and not table.args["db"].quoted:
    502                        table.set("catalog", exp.Identifier(this=parts[0]))
    503                        table.set("db", exp.Identifier(this=parts[1]))
    504                else:
    505                    parts = table.name.split(".")
    506                    if len(parts) == 2 and not table.this.quoted:
    507                        table.set("db", exp.Identifier(this=parts[0]))
    508                        table.set("this", exp.Identifier(this=parts[1]))
    509
    510            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    511                catalog, db, this, *rest = (
    512                    exp.to_identifier(p, quoted=True)
    513                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    514                )
    515
    516                if rest and this:
    517                    this = exp.Dot.build([this, *rest])  # type: ignore
    518
    519                table = exp.Table(
    520                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    521                )
    522                table.meta["quoted_table"] = True
    523
    524            return table
    525
    526        def _parse_column(self) -> t.Optional[exp.Expression]:
    527            column = super()._parse_column()
    528            if isinstance(column, exp.Column):
    529                parts = column.parts
    530                if any("." in p.name for p in parts):
    531                    catalog, db, table, this, *rest = (
    532                        exp.to_identifier(p, quoted=True)
    533                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    534                    )
    535
    536                    if rest and this:
    537                        this = exp.Dot.build([this, *rest])  # type: ignore
    538
    539                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    540                    column.meta["quoted_column"] = True
    541
    542            return column
    543
    544        @t.overload
    545        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    546
    547        @t.overload
    548        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    549
    550        def _parse_json_object(self, agg=False):
    551            json_object = super()._parse_json_object()
    552            array_kv_pair = seq_get(json_object.expressions, 0)
    553
    554            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    555            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    556            if (
    557                array_kv_pair
    558                and isinstance(array_kv_pair.this, exp.Array)
    559                and isinstance(array_kv_pair.expression, exp.Array)
    560            ):
    561                keys = array_kv_pair.this.expressions
    562                values = array_kv_pair.expression.expressions
    563
    564                json_object.set(
    565                    "expressions",
    566                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    567                )
    568
    569            return json_object
    570
    571        def _parse_bracket(
    572            self, this: t.Optional[exp.Expression] = None
    573        ) -> t.Optional[exp.Expression]:
    574            bracket = super()._parse_bracket(this)
    575
    576            if this is bracket:
    577                return bracket
    578
    579            if isinstance(bracket, exp.Bracket):
    580                for expression in bracket.expressions:
    581                    name = expression.name.upper()
    582
    583                    if name not in self.BRACKET_OFFSETS:
    584                        break
    585
    586                    offset, safe = self.BRACKET_OFFSETS[name]
    587                    bracket.set("offset", offset)
    588                    bracket.set("safe", safe)
    589                    expression.replace(expression.expressions[0])
    590
    591            return bracket
    592
    593        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    594            unnest = super()._parse_unnest(with_alias=with_alias)
    595
    596            if not unnest:
    597                return None
    598
    599            unnest_expr = seq_get(unnest.expressions, 0)
    600            if unnest_expr:
    601                from sqlglot.optimizer.annotate_types import annotate_types
    602
    603                unnest_expr = annotate_types(unnest_expr)
    604
    605                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    606                # in contrast to other dialects such as DuckDB which flattens only the array by default
    607                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    608                    array_elem.is_type(exp.DataType.Type.STRUCT)
    609                    for array_elem in unnest_expr._type.expressions
    610                ):
    611                    unnest.set("explode_array", True)
    612
    613            return unnest
    614
    615    class Generator(generator.Generator):
    616        INTERVAL_ALLOWS_PLURAL_FORM = False
    617        JOIN_HINTS = False
    618        QUERY_HINTS = False
    619        TABLE_HINTS = False
    620        LIMIT_FETCH = "LIMIT"
    621        RENAME_TABLE_WITH_DB = False
    622        NVL2_SUPPORTED = False
    623        UNNEST_WITH_ORDINALITY = False
    624        COLLATE_IS_FUNC = True
    625        LIMIT_ONLY_LITERALS = True
    626        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    627        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    628        JSON_KEY_VALUE_PAIR_SEP = ","
    629        NULL_ORDERING_SUPPORTED = False
    630        IGNORE_NULLS_IN_FUNC = True
    631        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    632        CAN_IMPLEMENT_ARRAY_ANY = True
    633        SUPPORTS_TO_NUMBER = False
    634        NAMED_PLACEHOLDER_TOKEN = "@"
    635        HEX_FUNC = "TO_HEX"
    636        WITH_PROPERTIES_PREFIX = "OPTIONS"
    637        SUPPORTS_EXPLODING_PROJECTIONS = False
    638        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    639
    640        TRANSFORMS = {
    641            **generator.Generator.TRANSFORMS,
    642            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    643            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    644            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    645            exp.Array: inline_array_unless_query,
    646            exp.ArrayContains: _array_contains_sql,
    647            exp.ArrayFilter: filter_array_using_unnest,
    648            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    649            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    650            exp.CollateProperty: lambda self, e: (
    651                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    652                if e.args.get("default")
    653                else f"COLLATE {self.sql(e, 'this')}"
    654            ),
    655            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    656            exp.CountIf: rename_func("COUNTIF"),
    657            exp.Create: _create_sql,
    658            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    659            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    660            exp.DateDiff: lambda self, e: self.func(
    661                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    662            ),
    663            exp.DateFromParts: rename_func("DATE"),
    664            exp.DateStrToDate: datestrtodate_sql,
    665            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    666            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    667            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    668            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    669            exp.FromTimeZone: lambda self, e: self.func(
    670                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    671            ),
    672            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    673            exp.GroupConcat: rename_func("STRING_AGG"),
    674            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    675            exp.If: if_sql(false_value="NULL"),
    676            exp.ILike: no_ilike_sql,
    677            exp.IntDiv: rename_func("DIV"),
    678            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    679            exp.Max: max_or_greatest,
    680            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    681            exp.MD5Digest: rename_func("MD5"),
    682            exp.Min: min_or_least,
    683            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    684            exp.RegexpExtract: lambda self, e: self.func(
    685                "REGEXP_EXTRACT",
    686                e.this,
    687                e.expression,
    688                e.args.get("position"),
    689                e.args.get("occurrence"),
    690            ),
    691            exp.RegexpReplace: regexp_replace_sql,
    692            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    693            exp.ReturnsProperty: _returnsproperty_sql,
    694            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    695            exp.Select: transforms.preprocess(
    696                [
    697                    transforms.explode_to_unnest(),
    698                    transforms.unqualify_unnest,
    699                    transforms.eliminate_distinct_on,
    700                    _alias_ordered_group,
    701                    transforms.eliminate_semi_and_anti_joins,
    702                ]
    703            ),
    704            exp.SHA: rename_func("SHA1"),
    705            exp.SHA2: sha256_sql,
    706            exp.StabilityProperty: lambda self, e: (
    707                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    708            ),
    709            exp.StrToDate: _str_to_datetime_sql,
    710            exp.StrToTime: _str_to_datetime_sql,
    711            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    712            exp.TimeFromParts: rename_func("TIME"),
    713            exp.TimestampFromParts: rename_func("DATETIME"),
    714            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    715            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    716            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    717            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    718            exp.TimeStrToTime: timestrtotime_sql,
    719            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    720            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    721            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    722            exp.TsOrDsToTime: rename_func("TIME"),
    723            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    724            exp.Unhex: rename_func("FROM_HEX"),
    725            exp.UnixDate: rename_func("UNIX_DATE"),
    726            exp.UnixToTime: _unix_to_time_sql,
    727            exp.Values: _derived_table_values_to_unnest,
    728            exp.VariancePop: rename_func("VAR_POP"),
    729        }
    730
    731        SUPPORTED_JSON_PATH_PARTS = {
    732            exp.JSONPathKey,
    733            exp.JSONPathRoot,
    734            exp.JSONPathSubscript,
    735        }
    736
    737        TYPE_MAPPING = {
    738            **generator.Generator.TYPE_MAPPING,
    739            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    740            exp.DataType.Type.BIGINT: "INT64",
    741            exp.DataType.Type.BINARY: "BYTES",
    742            exp.DataType.Type.BOOLEAN: "BOOL",
    743            exp.DataType.Type.CHAR: "STRING",
    744            exp.DataType.Type.DECIMAL: "NUMERIC",
    745            exp.DataType.Type.DOUBLE: "FLOAT64",
    746            exp.DataType.Type.FLOAT: "FLOAT64",
    747            exp.DataType.Type.INT: "INT64",
    748            exp.DataType.Type.NCHAR: "STRING",
    749            exp.DataType.Type.NVARCHAR: "STRING",
    750            exp.DataType.Type.SMALLINT: "INT64",
    751            exp.DataType.Type.TEXT: "STRING",
    752            exp.DataType.Type.TIMESTAMP: "DATETIME",
    753            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    754            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    755            exp.DataType.Type.TINYINT: "INT64",
    756            exp.DataType.Type.VARBINARY: "BYTES",
    757            exp.DataType.Type.ROWVERSION: "BYTES",
    758            exp.DataType.Type.VARCHAR: "STRING",
    759            exp.DataType.Type.VARIANT: "ANY TYPE",
    760        }
    761
    762        PROPERTIES_LOCATION = {
    763            **generator.Generator.PROPERTIES_LOCATION,
    764            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    765            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    766        }
    767
    768        # WINDOW comes after QUALIFY
    769        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    770        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    771            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    772            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    773        }
    774
    775        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    776        RESERVED_KEYWORDS = {
    777            "all",
    778            "and",
    779            "any",
    780            "array",
    781            "as",
    782            "asc",
    783            "assert_rows_modified",
    784            "at",
    785            "between",
    786            "by",
    787            "case",
    788            "cast",
    789            "collate",
    790            "contains",
    791            "create",
    792            "cross",
    793            "cube",
    794            "current",
    795            "default",
    796            "define",
    797            "desc",
    798            "distinct",
    799            "else",
    800            "end",
    801            "enum",
    802            "escape",
    803            "except",
    804            "exclude",
    805            "exists",
    806            "extract",
    807            "false",
    808            "fetch",
    809            "following",
    810            "for",
    811            "from",
    812            "full",
    813            "group",
    814            "grouping",
    815            "groups",
    816            "hash",
    817            "having",
    818            "if",
    819            "ignore",
    820            "in",
    821            "inner",
    822            "intersect",
    823            "interval",
    824            "into",
    825            "is",
    826            "join",
    827            "lateral",
    828            "left",
    829            "like",
    830            "limit",
    831            "lookup",
    832            "merge",
    833            "natural",
    834            "new",
    835            "no",
    836            "not",
    837            "null",
    838            "nulls",
    839            "of",
    840            "on",
    841            "or",
    842            "order",
    843            "outer",
    844            "over",
    845            "partition",
    846            "preceding",
    847            "proto",
    848            "qualify",
    849            "range",
    850            "recursive",
    851            "respect",
    852            "right",
    853            "rollup",
    854            "rows",
    855            "select",
    856            "set",
    857            "some",
    858            "struct",
    859            "tablesample",
    860            "then",
    861            "to",
    862            "treat",
    863            "true",
    864            "unbounded",
    865            "union",
    866            "unnest",
    867            "using",
    868            "when",
    869            "where",
    870            "window",
    871            "with",
    872            "within",
    873        }
    874
    875        def mod_sql(self, expression: exp.Mod) -> str:
    876            this = expression.this
    877            expr = expression.expression
    878            return self.func(
    879                "MOD",
    880                this.unnest() if isinstance(this, exp.Paren) else this,
    881                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    882            )
    883
    884        def column_parts(self, expression: exp.Column) -> str:
    885            if expression.meta.get("quoted_column"):
    886                # If a column reference is of the form `dataset.table`.name, we need
    887                # to preserve the quoted table path, otherwise the reference breaks
    888                table_parts = ".".join(p.name for p in expression.parts[:-1])
    889                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    890                return f"{table_path}.{self.sql(expression, 'this')}"
    891
    892            return super().column_parts(expression)
    893
    894        def table_parts(self, expression: exp.Table) -> str:
    895            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    896            # we need to make sure the correct quoting is used in each case.
    897            #
    898            # For example, if there is a CTE x that clashes with a schema name, then the former will
    899            # return the table y in that schema, whereas the latter will return the CTE's y column:
    900            #
    901            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    902            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    903            if expression.meta.get("quoted_table"):
    904                table_parts = ".".join(p.name for p in expression.parts)
    905                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    906
    907            return super().table_parts(expression)
    908
    909        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    910            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    911                func_name = "FORMAT_DATETIME"
    912            else:
    913                func_name = "FORMAT_DATE"
    914            this = (
    915                expression.this
    916                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    917                else expression
    918            )
    919            return self.func(func_name, self.format_time(expression), this.this)
    920
    921        def eq_sql(self, expression: exp.EQ) -> str:
    922            # Operands of = cannot be NULL in BigQuery
    923            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    924                if not isinstance(expression.parent, exp.Update):
    925                    return "NULL"
    926
    927            return self.binary(expression, "=")
    928
    929        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    930            parent = expression.parent
    931
    932            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    933            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    934            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    935                return self.func(
    936                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    937                )
    938
    939            return super().attimezone_sql(expression)
    940
    941        def trycast_sql(self, expression: exp.TryCast) -> str:
    942            return self.cast_sql(expression, safe_prefix="SAFE_")
    943
    944        def bracket_sql(self, expression: exp.Bracket) -> str:
    945            this = expression.this
    946            expressions = expression.expressions
    947
    948            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    949                arg = expressions[0]
    950                if arg.type is None:
    951                    from sqlglot.optimizer.annotate_types import annotate_types
    952
    953                    arg = annotate_types(arg)
    954
    955                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    956                    # BQ doesn't support bracket syntax with string values for structs
    957                    return f"{self.sql(this)}.{arg.name}"
    958
    959            expressions_sql = self.expressions(expression, flat=True)
    960            offset = expression.args.get("offset")
    961
    962            if offset == 0:
    963                expressions_sql = f"OFFSET({expressions_sql})"
    964            elif offset == 1:
    965                expressions_sql = f"ORDINAL({expressions_sql})"
    966            elif offset is not None:
    967                self.unsupported(f"Unsupported array offset: {offset}")
    968
    969            if expression.args.get("safe"):
    970                expressions_sql = f"SAFE_{expressions_sql}"
    971
    972            return f"{self.sql(this)}[{expressions_sql}]"
    973
    974        def in_unnest_op(self, expression: exp.Unnest) -> str:
    975            return self.sql(expression)
    976
    977        def version_sql(self, expression: exp.Version) -> str:
    978            if expression.name == "TIMESTAMP":
    979                expression.set("this", "SYSTEM_TIME")
    980            return super().version_sql(expression)

logger = <Logger sqlglot (WARNING)>
class BigQuery(sqlglot.dialects.dialect.Dialect): View Source

    236class BigQuery(Dialect):
    237    WEEK_OFFSET = -1
    238    UNNEST_COLUMN_ONLY = True
    239    SUPPORTS_USER_DEFINED_TYPES = False
    240    SUPPORTS_SEMI_ANTI_JOIN = False
    241    LOG_BASE_FIRST = False
    242    HEX_LOWERCASE = True
    243    FORCE_EARLY_ALIAS_REF_EXPANSION = True
    244    EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True
    245
    246    # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#case_sensitivity
    247    NORMALIZATION_STRATEGY = NormalizationStrategy.CASE_INSENSITIVE
    248
    249    # bigquery udfs are case sensitive
    250    NORMALIZE_FUNCTIONS = False
    251
    252    # https://cloud.google.com/bigquery/docs/reference/standard-sql/format-elements#format_elements_date_time
    253    TIME_MAPPING = {
    254        "%D": "%m/%d/%y",
    255        "%E6S": "%S.%f",
    256        "%e": "%-d",
    257    }
    258
    259    FORMAT_MAPPING = {
    260        "DD": "%d",
    261        "MM": "%m",
    262        "MON": "%b",
    263        "MONTH": "%B",
    264        "YYYY": "%Y",
    265        "YY": "%y",
    266        "HH": "%I",
    267        "HH12": "%I",
    268        "HH24": "%H",
    269        "MI": "%M",
    270        "SS": "%S",
    271        "SSSSS": "%f",
    272        "TZH": "%z",
    273    }
    274
    275    # The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement
    276    # https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table
    277    PSEUDOCOLUMNS = {"_PARTITIONTIME", "_PARTITIONDATE"}
    278
    279    # All set operations require either a DISTINCT or ALL specifier
    280    SET_OP_DISTINCT_BY_DEFAULT = dict.fromkeys((exp.Except, exp.Intersect, exp.Union), None)
    281
    282    def normalize_identifier(self, expression: E) -> E:
    283        if (
    284            isinstance(expression, exp.Identifier)
    285            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    286        ):
    287            parent = expression.parent
    288            while isinstance(parent, exp.Dot):
    289                parent = parent.parent
    290
    291            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    292            # by default. The following check uses a heuristic to detect tables based on whether
    293            # they are qualified. This should generally be correct, because tables in BigQuery
    294            # must be qualified with at least a dataset, unless @@dataset_id is set.
    295            case_sensitive = (
    296                isinstance(parent, exp.UserDefinedFunction)
    297                or (
    298                    isinstance(parent, exp.Table)
    299                    and parent.db
    300                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    301                )
    302                or expression.meta.get("is_table")
    303            )
    304            if not case_sensitive:
    305                expression.set("this", expression.this.lower())
    306
    307        return expression
    308
    309    class Tokenizer(tokens.Tokenizer):
    310        QUOTES = ["'", '"', '"""', "'''"]
    311        COMMENTS = ["--", "#", ("/*", "*/")]
    312        IDENTIFIERS = ["`"]
    313        STRING_ESCAPES = ["\\"]
    314
    315        HEX_STRINGS = [("0x", ""), ("0X", "")]
    316
    317        BYTE_STRINGS = [
    318            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    319        ]
    320
    321        RAW_STRINGS = [
    322            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    323        ]
    324
    325        KEYWORDS = {
    326            **tokens.Tokenizer.KEYWORDS,
    327            "ANY TYPE": TokenType.VARIANT,
    328            "BEGIN": TokenType.COMMAND,
    329            "BEGIN TRANSACTION": TokenType.BEGIN,
    330            "BYTEINT": TokenType.INT,
    331            "BYTES": TokenType.BINARY,
    332            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    333            "DATETIME": TokenType.TIMESTAMP,
    334            "DECLARE": TokenType.COMMAND,
    335            "ELSEIF": TokenType.COMMAND,
    336            "EXCEPTION": TokenType.COMMAND,
    337            "FLOAT64": TokenType.DOUBLE,
    338            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    339            "MODEL": TokenType.MODEL,
    340            "NOT DETERMINISTIC": TokenType.VOLATILE,
    341            "RECORD": TokenType.STRUCT,
    342            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    343        }
    344        KEYWORDS.pop("DIV")
    345        KEYWORDS.pop("VALUES")
    346        KEYWORDS.pop("/*+")
    347
    348    class Parser(parser.Parser):
    349        PREFIXED_PIVOT_COLUMNS = True
    350        LOG_DEFAULTS_TO_LN = True
    351        SUPPORTS_IMPLICIT_UNNEST = True
    352
    353        FUNCTIONS = {
    354            **parser.Parser.FUNCTIONS,
    355            "DATE": _build_date,
    356            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    357            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    358            "DATE_TRUNC": lambda args: exp.DateTrunc(
    359                unit=exp.Literal.string(str(seq_get(args, 1))),
    360                this=seq_get(args, 0),
    361            ),
    362            "DATETIME": _build_datetime,
    363            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    364            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    365            "DIV": binary_from_function(exp.IntDiv),
    366            "FORMAT_DATE": lambda args: exp.TimeToStr(
    367                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    368            ),
    369            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    370            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    371                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    372            ),
    373            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    374            "MD5": exp.MD5Digest.from_arg_list,
    375            "TO_HEX": _build_to_hex,
    376            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    377                [seq_get(args, 1), seq_get(args, 0)]
    378            ),
    379            "PARSE_TIMESTAMP": _build_parse_timestamp,
    380            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    381            "REGEXP_EXTRACT": lambda args: exp.RegexpExtract(
    382                this=seq_get(args, 0),
    383                expression=seq_get(args, 1),
    384                position=seq_get(args, 2),
    385                occurrence=seq_get(args, 3),
    386                group=exp.Literal.number(1) if re.compile(args[1].name).groups == 1 else None,
    387            ),
    388            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    389            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    390            "SPLIT": lambda args: exp.Split(
    391                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    392                this=seq_get(args, 0),
    393                expression=seq_get(args, 1) or exp.Literal.string(","),
    394            ),
    395            "TIME": _build_time,
    396            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    397            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    398            "TIMESTAMP": _build_timestamp,
    399            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    400            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    401            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    402                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    403            ),
    404            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    405                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    406            ),
    407            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    408            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    409            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    410                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    411            ),
    412        }
    413
    414        FUNCTION_PARSERS = {
    415            **parser.Parser.FUNCTION_PARSERS,
    416            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    417        }
    418        FUNCTION_PARSERS.pop("TRIM")
    419
    420        NO_PAREN_FUNCTIONS = {
    421            **parser.Parser.NO_PAREN_FUNCTIONS,
    422            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    423        }
    424
    425        NESTED_TYPE_TOKENS = {
    426            *parser.Parser.NESTED_TYPE_TOKENS,
    427            TokenType.TABLE,
    428        }
    429
    430        PROPERTY_PARSERS = {
    431            **parser.Parser.PROPERTY_PARSERS,
    432            "NOT DETERMINISTIC": lambda self: self.expression(
    433                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    434            ),
    435            "OPTIONS": lambda self: self._parse_with_property(),
    436        }
    437
    438        CONSTRAINT_PARSERS = {
    439            **parser.Parser.CONSTRAINT_PARSERS,
    440            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    441        }
    442
    443        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    444        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    445
    446        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    447
    448        STATEMENT_PARSERS = {
    449            **parser.Parser.STATEMENT_PARSERS,
    450            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    451            TokenType.END: lambda self: self._parse_as_command(self._prev),
    452            TokenType.FOR: lambda self: self._parse_for_in(),
    453        }
    454
    455        BRACKET_OFFSETS = {
    456            "OFFSET": (0, False),
    457            "ORDINAL": (1, False),
    458            "SAFE_OFFSET": (0, True),
    459            "SAFE_ORDINAL": (1, True),
    460        }
    461
    462        def _parse_for_in(self) -> exp.ForIn:
    463            this = self._parse_range()
    464            self._match_text_seq("DO")
    465            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    466
    467        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    468            this = super()._parse_table_part(schema=schema) or self._parse_number()
    469
    470            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    471            if isinstance(this, exp.Identifier):
    472                table_name = this.name
    473                while self._match(TokenType.DASH, advance=False) and self._next:
    474                    text = ""
    475                    while self._curr and self._curr.token_type != TokenType.DOT:
    476                        self._advance()
    477                        text += self._prev.text
    478                    table_name += text
    479
    480                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    481            elif isinstance(this, exp.Literal):
    482                table_name = this.name
    483
    484                if self._is_connected() and self._parse_var(any_token=True):
    485                    table_name += self._prev.text
    486
    487                this = exp.Identifier(this=table_name, quoted=True)
    488
    489            return this
    490
    491        def _parse_table_parts(
    492            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    493        ) -> exp.Table:
    494            table = super()._parse_table_parts(
    495                schema=schema, is_db_reference=is_db_reference, wildcard=True
    496            )
    497
    498            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    499            if not table.catalog:
    500                if table.db:
    501                    parts = table.db.split(".")
    502                    if len(parts) == 2 and not table.args["db"].quoted:
    503                        table.set("catalog", exp.Identifier(this=parts[0]))
    504                        table.set("db", exp.Identifier(this=parts[1]))
    505                else:
    506                    parts = table.name.split(".")
    507                    if len(parts) == 2 and not table.this.quoted:
    508                        table.set("db", exp.Identifier(this=parts[0]))
    509                        table.set("this", exp.Identifier(this=parts[1]))
    510
    511            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    512                catalog, db, this, *rest = (
    513                    exp.to_identifier(p, quoted=True)
    514                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    515                )
    516
    517                if rest and this:
    518                    this = exp.Dot.build([this, *rest])  # type: ignore
    519
    520                table = exp.Table(
    521                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    522                )
    523                table.meta["quoted_table"] = True
    524
    525            return table
    526
    527        def _parse_column(self) -> t.Optional[exp.Expression]:
    528            column = super()._parse_column()
    529            if isinstance(column, exp.Column):
    530                parts = column.parts
    531                if any("." in p.name for p in parts):
    532                    catalog, db, table, this, *rest = (
    533                        exp.to_identifier(p, quoted=True)
    534                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    535                    )
    536
    537                    if rest and this:
    538                        this = exp.Dot.build([this, *rest])  # type: ignore
    539
    540                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    541                    column.meta["quoted_column"] = True
    542
    543            return column
    544
    545        @t.overload
    546        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    547
    548        @t.overload
    549        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    550
    551        def _parse_json_object(self, agg=False):
    552            json_object = super()._parse_json_object()
    553            array_kv_pair = seq_get(json_object.expressions, 0)
    554
    555            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    556            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    557            if (
    558                array_kv_pair
    559                and isinstance(array_kv_pair.this, exp.Array)
    560                and isinstance(array_kv_pair.expression, exp.Array)
    561            ):
    562                keys = array_kv_pair.this.expressions
    563                values = array_kv_pair.expression.expressions
    564
    565                json_object.set(
    566                    "expressions",
    567                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    568                )
    569
    570            return json_object
    571
    572        def _parse_bracket(
    573            self, this: t.Optional[exp.Expression] = None
    574        ) -> t.Optional[exp.Expression]:
    575            bracket = super()._parse_bracket(this)
    576
    577            if this is bracket:
    578                return bracket
    579
    580            if isinstance(bracket, exp.Bracket):
    581                for expression in bracket.expressions:
    582                    name = expression.name.upper()
    583
    584                    if name not in self.BRACKET_OFFSETS:
    585                        break
    586
    587                    offset, safe = self.BRACKET_OFFSETS[name]
    588                    bracket.set("offset", offset)
    589                    bracket.set("safe", safe)
    590                    expression.replace(expression.expressions[0])
    591
    592            return bracket
    593
    594        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    595            unnest = super()._parse_unnest(with_alias=with_alias)
    596
    597            if not unnest:
    598                return None
    599
    600            unnest_expr = seq_get(unnest.expressions, 0)
    601            if unnest_expr:
    602                from sqlglot.optimizer.annotate_types import annotate_types
    603
    604                unnest_expr = annotate_types(unnest_expr)
    605
    606                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    607                # in contrast to other dialects such as DuckDB which flattens only the array by default
    608                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    609                    array_elem.is_type(exp.DataType.Type.STRUCT)
    610                    for array_elem in unnest_expr._type.expressions
    611                ):
    612                    unnest.set("explode_array", True)
    613
    614            return unnest
    615
    616    class Generator(generator.Generator):
    617        INTERVAL_ALLOWS_PLURAL_FORM = False
    618        JOIN_HINTS = False
    619        QUERY_HINTS = False
    620        TABLE_HINTS = False
    621        LIMIT_FETCH = "LIMIT"
    622        RENAME_TABLE_WITH_DB = False
    623        NVL2_SUPPORTED = False
    624        UNNEST_WITH_ORDINALITY = False
    625        COLLATE_IS_FUNC = True
    626        LIMIT_ONLY_LITERALS = True
    627        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    628        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    629        JSON_KEY_VALUE_PAIR_SEP = ","
    630        NULL_ORDERING_SUPPORTED = False
    631        IGNORE_NULLS_IN_FUNC = True
    632        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    633        CAN_IMPLEMENT_ARRAY_ANY = True
    634        SUPPORTS_TO_NUMBER = False
    635        NAMED_PLACEHOLDER_TOKEN = "@"
    636        HEX_FUNC = "TO_HEX"
    637        WITH_PROPERTIES_PREFIX = "OPTIONS"
    638        SUPPORTS_EXPLODING_PROJECTIONS = False
    639        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    640
    641        TRANSFORMS = {
    642            **generator.Generator.TRANSFORMS,
    643            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    644            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    645            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    646            exp.Array: inline_array_unless_query,
    647            exp.ArrayContains: _array_contains_sql,
    648            exp.ArrayFilter: filter_array_using_unnest,
    649            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    650            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    651            exp.CollateProperty: lambda self, e: (
    652                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    653                if e.args.get("default")
    654                else f"COLLATE {self.sql(e, 'this')}"
    655            ),
    656            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    657            exp.CountIf: rename_func("COUNTIF"),
    658            exp.Create: _create_sql,
    659            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    660            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    661            exp.DateDiff: lambda self, e: self.func(
    662                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    663            ),
    664            exp.DateFromParts: rename_func("DATE"),
    665            exp.DateStrToDate: datestrtodate_sql,
    666            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    667            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    668            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    669            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    670            exp.FromTimeZone: lambda self, e: self.func(
    671                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    672            ),
    673            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    674            exp.GroupConcat: rename_func("STRING_AGG"),
    675            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    676            exp.If: if_sql(false_value="NULL"),
    677            exp.ILike: no_ilike_sql,
    678            exp.IntDiv: rename_func("DIV"),
    679            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    680            exp.Max: max_or_greatest,
    681            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    682            exp.MD5Digest: rename_func("MD5"),
    683            exp.Min: min_or_least,
    684            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    685            exp.RegexpExtract: lambda self, e: self.func(
    686                "REGEXP_EXTRACT",
    687                e.this,
    688                e.expression,
    689                e.args.get("position"),
    690                e.args.get("occurrence"),
    691            ),
    692            exp.RegexpReplace: regexp_replace_sql,
    693            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    694            exp.ReturnsProperty: _returnsproperty_sql,
    695            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    696            exp.Select: transforms.preprocess(
    697                [
    698                    transforms.explode_to_unnest(),
    699                    transforms.unqualify_unnest,
    700                    transforms.eliminate_distinct_on,
    701                    _alias_ordered_group,
    702                    transforms.eliminate_semi_and_anti_joins,
    703                ]
    704            ),
    705            exp.SHA: rename_func("SHA1"),
    706            exp.SHA2: sha256_sql,
    707            exp.StabilityProperty: lambda self, e: (
    708                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    709            ),
    710            exp.StrToDate: _str_to_datetime_sql,
    711            exp.StrToTime: _str_to_datetime_sql,
    712            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    713            exp.TimeFromParts: rename_func("TIME"),
    714            exp.TimestampFromParts: rename_func("DATETIME"),
    715            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    716            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    717            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    718            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    719            exp.TimeStrToTime: timestrtotime_sql,
    720            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    721            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    722            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    723            exp.TsOrDsToTime: rename_func("TIME"),
    724            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    725            exp.Unhex: rename_func("FROM_HEX"),
    726            exp.UnixDate: rename_func("UNIX_DATE"),
    727            exp.UnixToTime: _unix_to_time_sql,
    728            exp.Values: _derived_table_values_to_unnest,
    729            exp.VariancePop: rename_func("VAR_POP"),
    730        }
    731
    732        SUPPORTED_JSON_PATH_PARTS = {
    733            exp.JSONPathKey,
    734            exp.JSONPathRoot,
    735            exp.JSONPathSubscript,
    736        }
    737
    738        TYPE_MAPPING = {
    739            **generator.Generator.TYPE_MAPPING,
    740            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    741            exp.DataType.Type.BIGINT: "INT64",
    742            exp.DataType.Type.BINARY: "BYTES",
    743            exp.DataType.Type.BOOLEAN: "BOOL",
    744            exp.DataType.Type.CHAR: "STRING",
    745            exp.DataType.Type.DECIMAL: "NUMERIC",
    746            exp.DataType.Type.DOUBLE: "FLOAT64",
    747            exp.DataType.Type.FLOAT: "FLOAT64",
    748            exp.DataType.Type.INT: "INT64",
    749            exp.DataType.Type.NCHAR: "STRING",
    750            exp.DataType.Type.NVARCHAR: "STRING",
    751            exp.DataType.Type.SMALLINT: "INT64",
    752            exp.DataType.Type.TEXT: "STRING",
    753            exp.DataType.Type.TIMESTAMP: "DATETIME",
    754            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    755            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    756            exp.DataType.Type.TINYINT: "INT64",
    757            exp.DataType.Type.VARBINARY: "BYTES",
    758            exp.DataType.Type.ROWVERSION: "BYTES",
    759            exp.DataType.Type.VARCHAR: "STRING",
    760            exp.DataType.Type.VARIANT: "ANY TYPE",
    761        }
    762
    763        PROPERTIES_LOCATION = {
    764            **generator.Generator.PROPERTIES_LOCATION,
    765            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    766            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    767        }
    768
    769        # WINDOW comes after QUALIFY
    770        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    771        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    772            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    773            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    774        }
    775
    776        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    777        RESERVED_KEYWORDS = {
    778            "all",
    779            "and",
    780            "any",
    781            "array",
    782            "as",
    783            "asc",
    784            "assert_rows_modified",
    785            "at",
    786            "between",
    787            "by",
    788            "case",
    789            "cast",
    790            "collate",
    791            "contains",
    792            "create",
    793            "cross",
    794            "cube",
    795            "current",
    796            "default",
    797            "define",
    798            "desc",
    799            "distinct",
    800            "else",
    801            "end",
    802            "enum",
    803            "escape",
    804            "except",
    805            "exclude",
    806            "exists",
    807            "extract",
    808            "false",
    809            "fetch",
    810            "following",
    811            "for",
    812            "from",
    813            "full",
    814            "group",
    815            "grouping",
    816            "groups",
    817            "hash",
    818            "having",
    819            "if",
    820            "ignore",
    821            "in",
    822            "inner",
    823            "intersect",
    824            "interval",
    825            "into",
    826            "is",
    827            "join",
    828            "lateral",
    829            "left",
    830            "like",
    831            "limit",
    832            "lookup",
    833            "merge",
    834            "natural",
    835            "new",
    836            "no",
    837            "not",
    838            "null",
    839            "nulls",
    840            "of",
    841            "on",
    842            "or",
    843            "order",
    844            "outer",
    845            "over",
    846            "partition",
    847            "preceding",
    848            "proto",
    849            "qualify",
    850            "range",
    851            "recursive",
    852            "respect",
    853            "right",
    854            "rollup",
    855            "rows",
    856            "select",
    857            "set",
    858            "some",
    859            "struct",
    860            "tablesample",
    861            "then",
    862            "to",
    863            "treat",
    864            "true",
    865            "unbounded",
    866            "union",
    867            "unnest",
    868            "using",
    869            "when",
    870            "where",
    871            "window",
    872            "with",
    873            "within",
    874        }
    875
    876        def mod_sql(self, expression: exp.Mod) -> str:
    877            this = expression.this
    878            expr = expression.expression
    879            return self.func(
    880                "MOD",
    881                this.unnest() if isinstance(this, exp.Paren) else this,
    882                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    883            )
    884
    885        def column_parts(self, expression: exp.Column) -> str:
    886            if expression.meta.get("quoted_column"):
    887                # If a column reference is of the form `dataset.table`.name, we need
    888                # to preserve the quoted table path, otherwise the reference breaks
    889                table_parts = ".".join(p.name for p in expression.parts[:-1])
    890                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    891                return f"{table_path}.{self.sql(expression, 'this')}"
    892
    893            return super().column_parts(expression)
    894
    895        def table_parts(self, expression: exp.Table) -> str:
    896            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    897            # we need to make sure the correct quoting is used in each case.
    898            #
    899            # For example, if there is a CTE x that clashes with a schema name, then the former will
    900            # return the table y in that schema, whereas the latter will return the CTE's y column:
    901            #
    902            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    903            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    904            if expression.meta.get("quoted_table"):
    905                table_parts = ".".join(p.name for p in expression.parts)
    906                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    907
    908            return super().table_parts(expression)
    909
    910        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    911            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    912                func_name = "FORMAT_DATETIME"
    913            else:
    914                func_name = "FORMAT_DATE"
    915            this = (
    916                expression.this
    917                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    918                else expression
    919            )
    920            return self.func(func_name, self.format_time(expression), this.this)
    921
    922        def eq_sql(self, expression: exp.EQ) -> str:
    923            # Operands of = cannot be NULL in BigQuery
    924            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    925                if not isinstance(expression.parent, exp.Update):
    926                    return "NULL"
    927
    928            return self.binary(expression, "=")
    929
    930        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    931            parent = expression.parent
    932
    933            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    934            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    935            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    936                return self.func(
    937                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    938                )
    939
    940            return super().attimezone_sql(expression)
    941
    942        def trycast_sql(self, expression: exp.TryCast) -> str:
    943            return self.cast_sql(expression, safe_prefix="SAFE_")
    944
    945        def bracket_sql(self, expression: exp.Bracket) -> str:
    946            this = expression.this
    947            expressions = expression.expressions
    948
    949            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    950                arg = expressions[0]
    951                if arg.type is None:
    952                    from sqlglot.optimizer.annotate_types import annotate_types
    953
    954                    arg = annotate_types(arg)
    955
    956                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    957                    # BQ doesn't support bracket syntax with string values for structs
    958                    return f"{self.sql(this)}.{arg.name}"
    959
    960            expressions_sql = self.expressions(expression, flat=True)
    961            offset = expression.args.get("offset")
    962
    963            if offset == 0:
    964                expressions_sql = f"OFFSET({expressions_sql})"
    965            elif offset == 1:
    966                expressions_sql = f"ORDINAL({expressions_sql})"
    967            elif offset is not None:
    968                self.unsupported(f"Unsupported array offset: {offset}")
    969
    970            if expression.args.get("safe"):
    971                expressions_sql = f"SAFE_{expressions_sql}"
    972
    973            return f"{self.sql(this)}[{expressions_sql}]"
    974
    975        def in_unnest_op(self, expression: exp.Unnest) -> str:
    976            return self.sql(expression)
    977
    978        def version_sql(self, expression: exp.Version) -> str:
    979            if expression.name == "TIMESTAMP":
    980                expression.set("this", "SYSTEM_TIME")
    981            return super().version_sql(expression)

WEEK_OFFSET = -1

First day of the week in DATE_TRUNC(week). Defaults to 0 (Monday). -1 would be Sunday.

UNNEST_COLUMN_ONLY = True

Whether `UNNEST` table aliases are treated as column aliases.

SUPPORTS_USER_DEFINED_TYPES = False

Whether user-defined data types are supported.

SUPPORTS_SEMI_ANTI_JOIN = False

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

LOG_BASE_FIRST: Optional[bool] = False

Whether the base comes first in the `LOG` function. Possible values: `True`, `False`, `None` (two arguments are not supported by `LOG`)

HEX_LOWERCASE = True

Whether the `HEX` function returns a lowercase hexadecimal string.

FORCE_EARLY_ALIAS_REF_EXPANSION = True

Whether alias reference expansion (_expand_alias_refs()) should run before column qualification (_qualify_columns()).

###### For example:

> WITH data AS ( SELECT 1 AS id, 2 AS my_id ) SELECT id AS my_id FROM data WHERE my_id = 1 GROUP BY my_id, HAVING my_id = 1

In most dialects, "my_id" would refer to "data.my_id" across the query, except: - BigQuery, which will forward the alias to GROUP BY + HAVING clauses i.e it resolves to "WHERE my_id = 1 GROUP BY id HAVING id = 1" - Clickhouse, which will forward the alias across the query i.e it resolves to "WHERE id = 1 GROUP BY id HAVING id = 1"

EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True

Whether alias reference expansion before qualification should only happen for the GROUP BY clause.

NORMALIZATION_STRATEGY = <NormalizationStrategy.CASE_INSENSITIVE: 'CASE_INSENSITIVE'>

Specifies the strategy according to which identifiers should be normalized.

NORMALIZE_FUNCTIONS: bool | str = False

Determines how function names are going to be normalized.

###### Possible values:

> "upper" or True: Convert names to uppercase. "lower": Convert names to lowercase. False: Disables function name normalization.

TIME_MAPPING: Dict[str, str] = {'%D': '%m/%d/%y', '%E6S': '%S.%f', '%e': '%-d'}

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

FORMAT_MAPPING: Dict[str, str] = {'DD': '%d', 'MM': '%m', 'MON': '%b', 'MONTH': '%B', 'YYYY': '%Y', 'YY': '%y', 'HH': '%I', 'HH12': '%I', 'HH24': '%H', 'MI': '%M', 'SS': '%S', 'SSSSS': '%f', 'TZH': '%z'}

Helper which is used for parsing the special syntax `CAST(x AS DATE FORMAT 'yyyy')`. If empty, the corresponding trie will be constructed off of `TIME_MAPPING`.

PSEUDOCOLUMNS: Set[str] = {'_PARTITIONDATE', '_PARTITIONTIME'}

Columns that are auto-generated by the engine corresponding to this dialect. For example, such columns may be excluded from `SELECT *` queries.

SET_OP_DISTINCT_BY_DEFAULT: Dict[Type[sqlglot.expressions.Expression], Optional[bool]] = {<class 'sqlglot.expressions.Except'>: None, <class 'sqlglot.expressions.Intersect'>: None, <class 'sqlglot.expressions.Union'>: None}

Whether a set operation uses DISTINCT by default. This is `None` when either `DISTINCT` or `ALL` must be explicitly specified.

def normalize_identifier(self, expression: ~E) -> ~E: View Source

    282    def normalize_identifier(self, expression: E) -> E:
    283        if (
    284            isinstance(expression, exp.Identifier)
    285            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    286        ):
    287            parent = expression.parent
    288            while isinstance(parent, exp.Dot):
    289                parent = parent.parent
    290
    291            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    292            # by default. The following check uses a heuristic to detect tables based on whether
    293            # they are qualified. This should generally be correct, because tables in BigQuery
    294            # must be qualified with at least a dataset, unless @@dataset_id is set.
    295            case_sensitive = (
    296                isinstance(parent, exp.UserDefinedFunction)
    297                or (
    298                    isinstance(parent, exp.Table)
    299                    and parent.db
    300                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    301                )
    302                or expression.meta.get("is_table")
    303            )
    304            if not case_sensitive:
    305                expression.set("this", expression.this.lower())
    306
    307        return expression

Transforms an identifier in a way that resembles how it'd be resolved by this dialect.

For example, an identifier like `FoO` would be resolved as `foo` in Postgres, because it lowercases all unquoted identifiers. On the other hand, Snowflake uppercases them, so it would resolve it as `FOO`. If it was quoted, it'd need to be treated as case-sensitive, and so any normalization would be prohibited in order to avoid "breaking" the identifier.

There are also dialects like Spark, which are case-insensitive even when quotes are present, and dialects like MySQL, whose resolution rules match those employed by the underlying operating system, for example they may always be case-sensitive in Linux.

Finally, the normalization behavior of some engines can even be controlled through flags, like in Redshift's case, where users can explicitly set enable_case_sensitive_identifier.

SQLGlot aims to understand and handle all of these different behaviors gracefully, so that it can analyze queries in the optimizer and successfully capture their semantics.

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 'BigQuery.Tokenizer'>
jsonpath_tokenizer_class = <class 'sqlglot.tokens.JSONPathTokenizer'>
parser_class = <class 'BigQuery.Parser'>
generator_class = <class 'BigQuery.Generator'>
TIME_TRIE: Dict = {'%': {'D': {0: True}, 'E': {'6': {'S': {0: True}}}, 'e': {0: True}}}
FORMAT_TRIE: Dict = {'D': {'D': {0: True}}, 'M': {'M': {0: True}, 'O': {'N': {0: True, 'T': {'H': {0: True}}}}, 'I': {0: True}}, 'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'H': {'H': {0: True, '1': {'2': {0: True}}, '2': {'4': {0: True}}}}, 'S': {'S': {0: True, 'S': {'S': {'S': {0: True}}}}}, 'T': {'Z': {'H': {0: True}}}}
INVERSE_TIME_MAPPING: Dict[str, str] = {'%m/%d/%y': '%D', '%S.%f': '%E6S', '%-d': '%e'}
INVERSE_TIME_TRIE: Dict = {'%': {'m': {'/': {'%': {'d': {'/': {'%': {'y': {0: True}}}}}}}, 'S': {'.': {'%': {'f': {0: True}}}}, '-': {'d': {0: True}}}}
INVERSE_FORMAT_MAPPING: Dict[str, str] = {'%d': 'DD', '%m': 'MM', '%b': 'MON', '%B': 'MONTH', '%Y': 'YYYY', '%y': 'YY', '%I': 'HH12', '%H': 'HH24', '%M': 'MI', '%S': 'SS', '%f': 'SSSSS', '%z': 'TZH'}
INVERSE_FORMAT_TRIE: Dict = {'%': {'d': {0: True}, 'm': {0: True}, 'b': {0: True}, 'B': {0: True}, 'Y': {0: True}, 'y': {0: True}, 'I': {0: True}, 'H': {0: True}, 'M': {0: True}, 'S': {0: True}, 'f': {0: True}, 'z': {0: True}}}
INVERSE_CREATABLE_KIND_MAPPING: dict[str, str] = {}
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] = '0x'
HEX_END: Optional[str] = ''
BYTE_START: Optional[str] = "b'"
BYTE_END: Optional[str] = "'"
UNICODE_START: Optional[str] = None
UNICODE_END: Optional[str] = None

##### Inherited Members

sqlglot.dialects.dialect.Dialect
  Dialect
  INDEX_OFFSET
  ALIAS_POST_TABLESAMPLE
  TABLESAMPLE_SIZE_IS_PERCENT
  IDENTIFIERS_CAN_START_WITH_DIGIT
  DPIPE_IS_STRING_CONCAT
  STRICT_STRING_CONCAT
  COPY_PARAMS_ARE_CSV
  NULL_ORDERING
  TYPED_DIVISION
  SAFE_DIVISION
  CONCAT_COALESCE
  DATE_FORMAT
  DATEINT_FORMAT
  TIME_FORMAT
  PREFER_CTE_ALIAS_COLUMN
  SUPPORTS_ORDER_BY_ALL
  HAS_DISTINCT_ARRAY_CONSTRUCTORS
  SUPPORTS_FIXED_SIZE_ARRAYS
  STRICT_JSON_PATH_SYNTAX
  ON_CONDITION_EMPTY_BEFORE_ERROR
  ARRAY_AGG_INCLUDES_NULLS
  REGEXP_EXTRACT_DEFAULT_GROUP
  CREATABLE_KIND_MAPPING
  DATE_PART_MAPPING
  TYPE_TO_EXPRESSIONS
  ANNOTATORS
  get_or_raise
  format_time
  settings
  case_sensitive
  can_identify
  quote_identifier
  to_json_path
  parse
  parse_into
  generate
  transpile
  tokenize
  tokenizer
  jsonpath_tokenizer
  parser
  generator

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

    309    class Tokenizer(tokens.Tokenizer):
    310        QUOTES = ["'", '"', '"""', "'''"]
    311        COMMENTS = ["--", "#", ("/*", "*/")]
    312        IDENTIFIERS = ["`"]
    313        STRING_ESCAPES = ["\\"]
    314
    315        HEX_STRINGS = [("0x", ""), ("0X", "")]
    316
    317        BYTE_STRINGS = [
    318            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    319        ]
    320
    321        RAW_STRINGS = [
    322            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    323        ]
    324
    325        KEYWORDS = {
    326            **tokens.Tokenizer.KEYWORDS,
    327            "ANY TYPE": TokenType.VARIANT,
    328            "BEGIN": TokenType.COMMAND,
    329            "BEGIN TRANSACTION": TokenType.BEGIN,
    330            "BYTEINT": TokenType.INT,
    331            "BYTES": TokenType.BINARY,
    332            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    333            "DATETIME": TokenType.TIMESTAMP,
    334            "DECLARE": TokenType.COMMAND,
    335            "ELSEIF": TokenType.COMMAND,
    336            "EXCEPTION": TokenType.COMMAND,
    337            "FLOAT64": TokenType.DOUBLE,
    338            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    339            "MODEL": TokenType.MODEL,
    340            "NOT DETERMINISTIC": TokenType.VOLATILE,
    341            "RECORD": TokenType.STRUCT,
    342            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    343        }
    344        KEYWORDS.pop("DIV")
    345        KEYWORDS.pop("VALUES")
    346        KEYWORDS.pop("/*+")

QUOTES = ["'", '"', '"""', "'''"]
COMMENTS = ['--', '#', ('/*', '*/')]
IDENTIFIERS = ['`']
STRING_ESCAPES = ['\\']
HEX_STRINGS = [('0x', ''), ('0X', '')]
BYTE_STRINGS = [("b'", "'"), ("B'", "'"), ('b"', '"'), ('B"', '"'), ('b"""', '"""'), ('B"""', '"""'), ("b'''", "'''"), ("B'''", "'''")]
RAW_STRINGS = [("r'", "'"), ("R'", "'"), ('r"', '"'), ('R"', '"'), ('r"""', '"""'), ('R"""', '"""'), ("r'''", "'''"), ("R'''", "'''")]
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.COMMAND: 'COMMAND'>, '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'>, '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'>, 'RENAME': <TokenType.RENAME: 'RENAME'>, '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'>, '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'>, 'DECIMAL32': <TokenType.DECIMAL32: 'DECIMAL32'>, 'DECIMAL64': <TokenType.DECIMAL64: 'DECIMAL64'>, 'DECIMAL128': <TokenType.DECIMAL128: 'DECIMAL128'>, '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.TIMESTAMPTZ: 'TIMESTAMPTZ'>, '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.TIMESTAMP: 'TIMESTAMP'>, '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'>, 'ANY TYPE': <TokenType.VARIANT: 'VARIANT'>, 'BEGIN TRANSACTION': <TokenType.BEGIN: 'BEGIN'>, 'BYTEINT': <TokenType.INT: 'INT'>, 'BYTES': <TokenType.BINARY: 'BINARY'>, 'CURRENT_DATETIME': <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, 'DECLARE': <TokenType.COMMAND: 'COMMAND'>, 'ELSEIF': <TokenType.COMMAND: 'COMMAND'>, 'EXCEPTION': <TokenType.COMMAND: 'COMMAND'>, 'FLOAT64': <TokenType.DOUBLE: 'DOUBLE'>, 'FOR SYSTEM_TIME': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>, 'MODEL': <TokenType.MODEL: 'MODEL'>, 'NOT DETERMINISTIC': <TokenType.VOLATILE: 'VOLATILE'>, 'RECORD': <TokenType.STRUCT: 'STRUCT'>}

##### Inherited Members

sqlglot.tokens.Tokenizer
  Tokenizer
  SINGLE_TOKENS
  BIT_STRINGS
  HEREDOC_STRINGS
  UNICODE_STRINGS
  IDENTIFIER_ESCAPES
  VAR_SINGLE_TOKENS
  HEREDOC_TAG_IS_IDENTIFIER
  HEREDOC_STRING_ALTERNATIVE
  STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS
  NESTED_COMMENTS
  WHITE_SPACE
  COMMANDS
  COMMAND_PREFIX_TOKENS
  NUMERIC_LITERALS
  dialect
  reset
  tokenize
  tokenize_rs
  size
  sql
  tokens

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

    348    class Parser(parser.Parser):
    349        PREFIXED_PIVOT_COLUMNS = True
    350        LOG_DEFAULTS_TO_LN = True
    351        SUPPORTS_IMPLICIT_UNNEST = True
    352
    353        FUNCTIONS = {
    354            **parser.Parser.FUNCTIONS,
    355            "DATE": _build_date,
    356            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    357            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    358            "DATE_TRUNC": lambda args: exp.DateTrunc(
    359                unit=exp.Literal.string(str(seq_get(args, 1))),
    360                this=seq_get(args, 0),
    361            ),
    362            "DATETIME": _build_datetime,
    363            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    364            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    365            "DIV": binary_from_function(exp.IntDiv),
    366            "FORMAT_DATE": lambda args: exp.TimeToStr(
    367                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    368            ),
    369            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    370            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    371                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    372            ),
    373            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    374            "MD5": exp.MD5Digest.from_arg_list,
    375            "TO_HEX": _build_to_hex,
    376            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    377                [seq_get(args, 1), seq_get(args, 0)]
    378            ),
    379            "PARSE_TIMESTAMP": _build_parse_timestamp,
    380            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    381            "REGEXP_EXTRACT": lambda args: exp.RegexpExtract(
    382                this=seq_get(args, 0),
    383                expression=seq_get(args, 1),
    384                position=seq_get(args, 2),
    385                occurrence=seq_get(args, 3),
    386                group=exp.Literal.number(1) if re.compile(args[1].name).groups == 1 else None,
    387            ),
    388            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    389            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    390            "SPLIT": lambda args: exp.Split(
    391                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    392                this=seq_get(args, 0),
    393                expression=seq_get(args, 1) or exp.Literal.string(","),
    394            ),
    395            "TIME": _build_time,
    396            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    397            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    398            "TIMESTAMP": _build_timestamp,
    399            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    400            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    401            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    402                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    403            ),
    404            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    405                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    406            ),
    407            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    408            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    409            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    410                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    411            ),
    412        }
    413
    414        FUNCTION_PARSERS = {
    415            **parser.Parser.FUNCTION_PARSERS,
    416            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    417        }
    418        FUNCTION_PARSERS.pop("TRIM")
    419
    420        NO_PAREN_FUNCTIONS = {
    421            **parser.Parser.NO_PAREN_FUNCTIONS,
    422            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    423        }
    424
    425        NESTED_TYPE_TOKENS = {
    426            *parser.Parser.NESTED_TYPE_TOKENS,
    427            TokenType.TABLE,
    428        }
    429
    430        PROPERTY_PARSERS = {
    431            **parser.Parser.PROPERTY_PARSERS,
    432            "NOT DETERMINISTIC": lambda self: self.expression(
    433                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    434            ),
    435            "OPTIONS": lambda self: self._parse_with_property(),
    436        }
    437
    438        CONSTRAINT_PARSERS = {
    439            **parser.Parser.CONSTRAINT_PARSERS,
    440            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    441        }
    442
    443        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    444        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    445
    446        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    447
    448        STATEMENT_PARSERS = {
    449            **parser.Parser.STATEMENT_PARSERS,
    450            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    451            TokenType.END: lambda self: self._parse_as_command(self._prev),
    452            TokenType.FOR: lambda self: self._parse_for_in(),
    453        }
    454
    455        BRACKET_OFFSETS = {
    456            "OFFSET": (0, False),
    457            "ORDINAL": (1, False),
    458            "SAFE_OFFSET": (0, True),
    459            "SAFE_ORDINAL": (1, True),
    460        }
    461
    462        def _parse_for_in(self) -> exp.ForIn:
    463            this = self._parse_range()
    464            self._match_text_seq("DO")
    465            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    466
    467        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    468            this = super()._parse_table_part(schema=schema) or self._parse_number()
    469
    470            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    471            if isinstance(this, exp.Identifier):
    472                table_name = this.name
    473                while self._match(TokenType.DASH, advance=False) and self._next:
    474                    text = ""
    475                    while self._curr and self._curr.token_type != TokenType.DOT:
    476                        self._advance()
    477                        text += self._prev.text
    478                    table_name += text
    479
    480                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    481            elif isinstance(this, exp.Literal):
    482                table_name = this.name
    483
    484                if self._is_connected() and self._parse_var(any_token=True):
    485                    table_name += self._prev.text
    486
    487                this = exp.Identifier(this=table_name, quoted=True)
    488
    489            return this
    490
    491        def _parse_table_parts(
    492            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    493        ) -> exp.Table:
    494            table = super()._parse_table_parts(
    495                schema=schema, is_db_reference=is_db_reference, wildcard=True
    496            )
    497
    498            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    499            if not table.catalog:
    500                if table.db:
    501                    parts = table.db.split(".")
    502                    if len(parts) == 2 and not table.args["db"].quoted:
    503                        table.set("catalog", exp.Identifier(this=parts[0]))
    504                        table.set("db", exp.Identifier(this=parts[1]))
    505                else:
    506                    parts = table.name.split(".")
    507                    if len(parts) == 2 and not table.this.quoted:
    508                        table.set("db", exp.Identifier(this=parts[0]))
    509                        table.set("this", exp.Identifier(this=parts[1]))
    510
    511            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    512                catalog, db, this, *rest = (
    513                    exp.to_identifier(p, quoted=True)
    514                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    515                )
    516
    517                if rest and this:
    518                    this = exp.Dot.build([this, *rest])  # type: ignore
    519
    520                table = exp.Table(
    521                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    522                )
    523                table.meta["quoted_table"] = True
    524
    525            return table
    526
    527        def _parse_column(self) -> t.Optional[exp.Expression]:
    528            column = super()._parse_column()
    529            if isinstance(column, exp.Column):
    530                parts = column.parts
    531                if any("." in p.name for p in parts):
    532                    catalog, db, table, this, *rest = (
    533                        exp.to_identifier(p, quoted=True)
    534                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    535                    )
    536
    537                    if rest and this:
    538                        this = exp.Dot.build([this, *rest])  # type: ignore
    539
    540                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    541                    column.meta["quoted_column"] = True
    542
    543            return column
    544
    545        @t.overload
    546        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    547
    548        @t.overload
    549        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    550
    551        def _parse_json_object(self, agg=False):
    552            json_object = super()._parse_json_object()
    553            array_kv_pair = seq_get(json_object.expressions, 0)
    554
    555            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    556            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    557            if (
    558                array_kv_pair
    559                and isinstance(array_kv_pair.this, exp.Array)
    560                and isinstance(array_kv_pair.expression, exp.Array)
    561            ):
    562                keys = array_kv_pair.this.expressions
    563                values = array_kv_pair.expression.expressions
    564
    565                json_object.set(
    566                    "expressions",
    567                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    568                )
    569
    570            return json_object
    571
    572        def _parse_bracket(
    573            self, this: t.Optional[exp.Expression] = None
    574        ) -> t.Optional[exp.Expression]:
    575            bracket = super()._parse_bracket(this)
    576
    577            if this is bracket:
    578                return bracket
    579
    580            if isinstance(bracket, exp.Bracket):
    581                for expression in bracket.expressions:
    582                    name = expression.name.upper()
    583
    584                    if name not in self.BRACKET_OFFSETS:
    585                        break
    586
    587                    offset, safe = self.BRACKET_OFFSETS[name]
    588                    bracket.set("offset", offset)
    589                    bracket.set("safe", safe)
    590                    expression.replace(expression.expressions[0])
    591
    592            return bracket
    593
    594        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    595            unnest = super()._parse_unnest(with_alias=with_alias)
    596
    597            if not unnest:
    598                return None
    599
    600            unnest_expr = seq_get(unnest.expressions, 0)
    601            if unnest_expr:
    602                from sqlglot.optimizer.annotate_types import annotate_types
    603
    604                unnest_expr = annotate_types(unnest_expr)
    605
    606                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    607                # in contrast to other dialects such as DuckDB which flattens only the array by default
    608                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    609                    array_elem.is_type(exp.DataType.Type.STRUCT)
    610                    for array_elem in unnest_expr._type.expressions
    611                ):
    612                    unnest.set("explode_array", True)
    613
    614            return unnest

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

PREFIXED_PIVOT_COLUMNS = True
LOG_DEFAULTS_TO_LN = True
SUPPORTS_IMPLICIT_UNNEST = True
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': <function Parser.<lambda>>, 'ARRAY_AGG': <function Parser.<lambda>>, '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': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContains'>>, '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': <function build_coalesce>, 'IFNULL': <function build_coalesce>, 'NVL': <function build_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'>>, 'CONVERT_TIMEZONE': <function build_convert_timezone>, 'CORR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Corr'>>, 'COUNT': <function Parser.<lambda>>, '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_date>, 'DATE_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'DATEDIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.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': <function build_date_delta_with_interval.<locals>._builder>, 'DATE_TO_DATE_STR': <function Parser.<lambda>>, 'DATE_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateToDi'>>, 'DATE_TRUNC': <function BigQuery.Parser.<lambda>>, 'DATETIME': <function _build_datetime>, 'DATETIME_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'DATETIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeDiff'>>, 'DATETIME_SUB': <function build_date_delta_with_interval.<locals>._builder>, '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'>>, 'DAYOFWEEK_ISO': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeekIso'>>, 'ISODOW': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeekIso'>>, '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'>>, 'EXPLODING_GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ExplodingGenerateSeries'>>, '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.Flatten'>>, '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'>>, 'FROM_ISO8601_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromISO8601Timestamp'>>, 'GAP_FILL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GapFill'>>, 'GENERATE_DATE_ARRAY': <function Parser.<lambda>>, 'GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'GENERATE_TIMESTAMP_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateTimestampArray'>>, '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'>>, 'INLINE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Inline'>>, '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'>>, 'J_S_O_N_EXISTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONExists'>>, 'JSON_EXTRACT': <function build_extract_json_with_path.<locals>._builder>, 'JSON_EXTRACT_SCALAR': <function BigQuery.Parser.<lambda>>, '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': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastDay'>>, '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 BigQuery.Parser.<lambda>>, 'LEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Length'>>, '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.MD5Digest'>>, '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'>>, 'NORMALIZE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Normalize'>>, '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': <function BigQuery.Parser.<lambda>>, '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': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpReplace'>>, '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': <function BigQuery.Parser.<lambda>>, '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': <function _build_time>, 'TIME_ADD': <function build_date_delta_with_interval.<locals>._builder>, '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': <function build_date_delta_with_interval.<locals>._builder>, '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': <function _build_timestamp>, 'TIMESTAMP_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'TIMESTAMPDIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampFromParts'>>, 'TIMESTAMPFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampFromParts'>>, 'TIMESTAMP_SUB': <function build_date_delta_with_interval.<locals>._builder>, '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': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToNumber'>>, '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'>>, 'ARRAYAGG': <function Parser.<lambda>>, '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>>, 'LTRIM': <function Parser.<lambda>>, 'MOD': <function build_mod>, 'RIGHTPAD': <function Parser.<lambda>>, 'RPAD': <function Parser.<lambda>>, 'RTRIM': <function Parser.<lambda>>, 'SCOPE_RESOLUTION': <function Parser.<lambda>>, 'TO_HEX': <function _build_to_hex>, 'DIV': <function binary_from_function.<locals>.<lambda>>, 'FORMAT_DATE': <function BigQuery.Parser.<lambda>>, 'GENERATE_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'PARSE_DATE': <function BigQuery.Parser.<lambda>>, 'PARSE_TIMESTAMP': <function _build_parse_timestamp>, 'REGEXP_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'SHA256': <function BigQuery.Parser.<lambda>>, 'SHA512': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_MICROS': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_MILLIS': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_SECONDS': <function BigQuery.Parser.<lambda>>, 'TO_JSON_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONFormat'>>, 'FORMAT_DATETIME': <function BigQuery.Parser.<lambda>>}
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>>, 'NORMALIZE': <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>>, 'ARRAY': <function BigQuery.Parser.<lambda>>}
NO_PAREN_FUNCTIONS = {<TokenType.CURRENT_DATE: 'CURRENT_DATE'>: <class 'sqlglot.expressions.CurrentDate'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>: <class 'sqlglot.expressions.CurrentDatetime'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>: <class 'sqlglot.expressions.CurrentTime'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>: <class 'sqlglot.expressions.CurrentTimestamp'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>: <class 'sqlglot.expressions.CurrentUser'>}
NESTED_TYPE_TOKENS = {<TokenType.NULLABLE: 'NULLABLE'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.TABLE: 'TABLE'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.MAP: 'MAP'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.LIST: 'LIST'>, <TokenType.NESTED: 'NESTED'>}
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>>, 'DISTRIBUTED': <function Parser.<lambda>>, 'DUPLICATE': <function Parser.<lambda>>, 'DYNAMIC': <function Parser.<lambda>>, 'DISTKEY': <function Parser.<lambda>>, 'DISTSTYLE': <function Parser.<lambda>>, 'EMPTY': <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 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>>, 'STREAMING': <function Parser.<lambda>>, 'ROW': <function Parser.<lambda>>, 'ROW_FORMAT': <function Parser.<lambda>>, 'SAMPLE': <function Parser.<lambda>>, 'SECURE': <function Parser.<lambda>>, 'SECURITY': <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>>, 'NOT DETERMINISTIC': <function BigQuery.Parser.<lambda>>, 'OPTIONS': <function BigQuery.Parser.<lambda>>}
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 Parser.<lambda>>, 'OPTIONS': <function BigQuery.Parser.<lambda>>}
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.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>>}
NULL_TOKENS = {<TokenType.NULL: 'NULL'>, <TokenType.UNKNOWN: 'UNKNOWN'>}
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.ELSE: 'ELSE'>: <function BigQuery.Parser.<lambda>>, <TokenType.END: 'END'>: <function BigQuery.Parser.<lambda>>, <TokenType.FOR: 'FOR'>: <function BigQuery.Parser.<lambda>>}
BRACKET_OFFSETS = {'OFFSET': (0, False), 'ORDINAL': (1, False), 'SAFE_OFFSET': (0, True), 'SAFE_ORDINAL': (1, True)}
ID_VAR_TOKENS = {<TokenType.FUNCTION: 'FUNCTION'>, <TokenType.UNNEST: 'UNNEST'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.MERGE: 'MERGE'>, <TokenType.INT256: 'INT256'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.MODEL: 'MODEL'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.CUBE: 'CUBE'>, <TokenType.TEXT: 'TEXT'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.DELETE: 'DELETE'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.ENUM: 'ENUM'>, <TokenType.IPV4: 'IPV4'>, <TokenType.FILTER: 'FILTER'>, <TokenType.INT128: 'INT128'>, <TokenType.APPLY: 'APPLY'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.TAG: 'TAG'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.UINT: 'UINT'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.NATURAL: 'NATURAL'>, <TokenType.DATE32: 'DATE32'>, <TokenType.KEEP: 'KEEP'>, <TokenType.LEFT: 'LEFT'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.CHAR: 'CHAR'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.SUPER: 'SUPER'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.TABLE: 'TABLE'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.USE: 'USE'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.BINARY: 'BINARY'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.NAME: 'NAME'>, <TokenType.ASC: 'ASC'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.OFFSET: 'OFFSET'>, <TokenType.CACHE: 'CACHE'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.VIEW: 'VIEW'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.ANY: 'ANY'>, <TokenType.TIME: 'TIME'>, <TokenType.TOP: 'TOP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.UINT128: 'UINT128'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.NESTED: 'NESTED'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.FINAL: 'FINAL'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.SEMI: 'SEMI'>, <TokenType.TRUE: 'TRUE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.COPY: 'COPY'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.ROWS: 'ROWS'>, <TokenType.FIRST: 'FIRST'>, <TokenType.INDEX: 'INDEX'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.DECIMAL32: 'DECIMAL32'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.DECIMAL128: 'DECIMAL128'>, <TokenType.INET: 'INET'>, <TokenType.BIT: 'BIT'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.ASOF: 'ASOF'>, <TokenType.JSONB: 'JSONB'>, <TokenType.LOAD: 'LOAD'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.UINT256: 'UINT256'>, <TokenType.FALSE: 'FALSE'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.INT: 'INT'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.FULL: 'FULL'>, <TokenType.ALL: 'ALL'>, <TokenType.IS: 'IS'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.RENAME: 'RENAME'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.KILL: 'KILL'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.NULL: 'NULL'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.MAP: 'MAP'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.RIGHT: 'RIGHT'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.UUID: 'UUID'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.CASE: 'CASE'>, <TokenType.SET: 'SET'>, <TokenType.DIV: 'DIV'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.WINDOW: 'WINDOW'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.SOME: 'SOME'>, <TokenType.RANGE: 'RANGE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.LIST: 'LIST'>, <TokenType.DECIMAL64: 'DECIMAL64'>, <TokenType.ROW: 'ROW'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.MONEY: 'MONEY'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.VAR: 'VAR'>, <TokenType.DATE: 'DATE'>, <TokenType.DESC: 'DESC'>, <TokenType.SHOW: 'SHOW'>, <TokenType.YEAR: 'YEAR'>, <TokenType.JSON: 'JSON'>, <TokenType.IPV6: 'IPV6'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.END: 'END'>, <TokenType.NEXT: 'NEXT'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.XML: 'XML'>, <TokenType.ANTI: 'ANTI'>}
TABLE_ALIAS_TOKENS = {<TokenType.FUNCTION: 'FUNCTION'>, <TokenType.UNNEST: 'UNNEST'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.MERGE: 'MERGE'>, <TokenType.INT256: 'INT256'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.MODEL: 'MODEL'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.CUBE: 'CUBE'>, <TokenType.TEXT: 'TEXT'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.DELETE: 'DELETE'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.ENUM: 'ENUM'>, <TokenType.IPV4: 'IPV4'>, <TokenType.FILTER: 'FILTER'>, <TokenType.INT128: 'INT128'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.TAG: 'TAG'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.UINT: 'UINT'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.DATE32: 'DATE32'>, <TokenType.KEEP: 'KEEP'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.CHAR: 'CHAR'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.SUPER: 'SUPER'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.TABLE: 'TABLE'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.USE: 'USE'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.BINARY: 'BINARY'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.NAME: 'NAME'>, <TokenType.ASC: 'ASC'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.CACHE: 'CACHE'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.VIEW: 'VIEW'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.ANY: 'ANY'>, <TokenType.TIME: 'TIME'>, <TokenType.TOP: 'TOP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.UINT128: 'UINT128'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.NESTED: 'NESTED'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.FINAL: 'FINAL'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.SEMI: 'SEMI'>, <TokenType.TRUE: 'TRUE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.COPY: 'COPY'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.ROWS: 'ROWS'>, <TokenType.FIRST: 'FIRST'>, <TokenType.INDEX: 'INDEX'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.DECIMAL32: 'DECIMAL32'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.DECIMAL128: 'DECIMAL128'>, <TokenType.INET: 'INET'>, <TokenType.BIT: 'BIT'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.JSONB: 'JSONB'>, <TokenType.LOAD: 'LOAD'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.UINT256: 'UINT256'>, <TokenType.FALSE: 'FALSE'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.INT: 'INT'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.ALL: 'ALL'>, <TokenType.IS: 'IS'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.RENAME: 'RENAME'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.KILL: 'KILL'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.NULL: 'NULL'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.MAP: 'MAP'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.UUID: 'UUID'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.CASE: 'CASE'>, <TokenType.SET: 'SET'>, <TokenType.DIV: 'DIV'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.SOME: 'SOME'>, <TokenType.RANGE: 'RANGE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.LIST: 'LIST'>, <TokenType.DECIMAL64: 'DECIMAL64'>, <TokenType.ROW: 'ROW'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.MONEY: 'MONEY'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.VAR: 'VAR'>, <TokenType.DATE: 'DATE'>, <TokenType.DESC: 'DESC'>, <TokenType.SHOW: 'SHOW'>, <TokenType.YEAR: 'YEAR'>, <TokenType.JSON: 'JSON'>, <TokenType.IPV6: 'IPV6'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.END: 'END'>, <TokenType.NEXT: 'NEXT'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.XML: 'XML'>, <TokenType.ANTI: 'ANTI'>}
SHOW_TRIE: Dict = {}
SET_TRIE: Dict = {'GLOBAL': {0: True}, 'LOCAL': {0: True}, 'SESSION': {0: True}, 'TRANSACTION': {0: True}}

##### Inherited Members

sqlglot.parser.Parser
  Parser
  STRUCT_TYPE_TOKENS
  ENUM_TYPE_TOKENS
  AGGREGATE_TYPE_TOKENS
  TYPE_TOKENS
  SIGNED_TO_UNSIGNED_TYPE_TOKEN
  SUBQUERY_PREDICATES
  RESERVED_TOKENS
  DB_CREATABLES
  CREATABLES
  ALTERABLES
  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
  TIMESTAMPS
  SET_OPERATIONS
  JOIN_METHODS
  JOIN_SIDES
  JOIN_KINDS
  JOIN_HINTS
  LAMBDAS
  COLUMN_OPERATORS
  EXPRESSION_PARSERS
  UNARY_PARSERS
  STRING_PARSERS
  NUMERIC_PARSERS
  PRIMARY_PARSERS
  PLACEHOLDER_PARSERS
  ALTER_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
  SHOW_PARSERS
  TYPE_LITERAL_PARSERS
  TYPE_CONVERTERS
  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
  UNNEST_OFFSET_ALIAS_TOKENS
  SELECT_START_TOKENS
  COPY_INTO_VARLEN_OPTIONS
  IS_JSON_PREDICATE_KIND
  ODBC_DATETIME_LITERALS
  ON_CONDITION_TOKENS
  STRICT_CAST
  IDENTIFY_PIVOT_STRINGS
  ALTER_TABLE_ADD_REQUIRED_FOR_EACH_COLUMN
  TABLESAMPLE_CSV
  DEFAULT_SAMPLING_METHOD
  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
  COLON_IS_VARIANT_EXTRACT
  VALUES_FOLLOWED_BY_PAREN
  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 BigQuery.Generator(sqlglot.generator.Generator): View Source

    616    class Generator(generator.Generator):
    617        INTERVAL_ALLOWS_PLURAL_FORM = False
    618        JOIN_HINTS = False
    619        QUERY_HINTS = False
    620        TABLE_HINTS = False
    621        LIMIT_FETCH = "LIMIT"
    622        RENAME_TABLE_WITH_DB = False
    623        NVL2_SUPPORTED = False
    624        UNNEST_WITH_ORDINALITY = False
    625        COLLATE_IS_FUNC = True
    626        LIMIT_ONLY_LITERALS = True
    627        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    628        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    629        JSON_KEY_VALUE_PAIR_SEP = ","
    630        NULL_ORDERING_SUPPORTED = False
    631        IGNORE_NULLS_IN_FUNC = True
    632        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    633        CAN_IMPLEMENT_ARRAY_ANY = True
    634        SUPPORTS_TO_NUMBER = False
    635        NAMED_PLACEHOLDER_TOKEN = "@"
    636        HEX_FUNC = "TO_HEX"
    637        WITH_PROPERTIES_PREFIX = "OPTIONS"
    638        SUPPORTS_EXPLODING_PROJECTIONS = False
    639        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    640
    641        TRANSFORMS = {
    642            **generator.Generator.TRANSFORMS,
    643            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    644            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    645            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    646            exp.Array: inline_array_unless_query,
    647            exp.ArrayContains: _array_contains_sql,
    648            exp.ArrayFilter: filter_array_using_unnest,
    649            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    650            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    651            exp.CollateProperty: lambda self, e: (
    652                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    653                if e.args.get("default")
    654                else f"COLLATE {self.sql(e, 'this')}"
    655            ),
    656            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    657            exp.CountIf: rename_func("COUNTIF"),
    658            exp.Create: _create_sql,
    659            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    660            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    661            exp.DateDiff: lambda self, e: self.func(
    662                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    663            ),
    664            exp.DateFromParts: rename_func("DATE"),
    665            exp.DateStrToDate: datestrtodate_sql,
    666            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    667            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    668            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    669            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    670            exp.FromTimeZone: lambda self, e: self.func(
    671                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    672            ),
    673            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    674            exp.GroupConcat: rename_func("STRING_AGG"),
    675            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    676            exp.If: if_sql(false_value="NULL"),
    677            exp.ILike: no_ilike_sql,
    678            exp.IntDiv: rename_func("DIV"),
    679            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    680            exp.Max: max_or_greatest,
    681            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    682            exp.MD5Digest: rename_func("MD5"),
    683            exp.Min: min_or_least,
    684            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    685            exp.RegexpExtract: lambda self, e: self.func(
    686                "REGEXP_EXTRACT",
    687                e.this,
    688                e.expression,
    689                e.args.get("position"),
    690                e.args.get("occurrence"),
    691            ),
    692            exp.RegexpReplace: regexp_replace_sql,
    693            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    694            exp.ReturnsProperty: _returnsproperty_sql,
    695            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    696            exp.Select: transforms.preprocess(
    697                [
    698                    transforms.explode_to_unnest(),
    699                    transforms.unqualify_unnest,
    700                    transforms.eliminate_distinct_on,
    701                    _alias_ordered_group,
    702                    transforms.eliminate_semi_and_anti_joins,
    703                ]
    704            ),
    705            exp.SHA: rename_func("SHA1"),
    706            exp.SHA2: sha256_sql,
    707            exp.StabilityProperty: lambda self, e: (
    708                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    709            ),
    710            exp.StrToDate: _str_to_datetime_sql,
    711            exp.StrToTime: _str_to_datetime_sql,
    712            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    713            exp.TimeFromParts: rename_func("TIME"),
    714            exp.TimestampFromParts: rename_func("DATETIME"),
    715            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    716            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    717            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    718            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    719            exp.TimeStrToTime: timestrtotime_sql,
    720            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    721            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    722            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    723            exp.TsOrDsToTime: rename_func("TIME"),
    724            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    725            exp.Unhex: rename_func("FROM_HEX"),
    726            exp.UnixDate: rename_func("UNIX_DATE"),
    727            exp.UnixToTime: _unix_to_time_sql,
    728            exp.Values: _derived_table_values_to_unnest,
    729            exp.VariancePop: rename_func("VAR_POP"),
    730        }
    731
    732        SUPPORTED_JSON_PATH_PARTS = {
    733            exp.JSONPathKey,
    734            exp.JSONPathRoot,
    735            exp.JSONPathSubscript,
    736        }
    737
    738        TYPE_MAPPING = {
    739            **generator.Generator.TYPE_MAPPING,
    740            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    741            exp.DataType.Type.BIGINT: "INT64",
    742            exp.DataType.Type.BINARY: "BYTES",
    743            exp.DataType.Type.BOOLEAN: "BOOL",
    744            exp.DataType.Type.CHAR: "STRING",
    745            exp.DataType.Type.DECIMAL: "NUMERIC",
    746            exp.DataType.Type.DOUBLE: "FLOAT64",
    747            exp.DataType.Type.FLOAT: "FLOAT64",
    748            exp.DataType.Type.INT: "INT64",
    749            exp.DataType.Type.NCHAR: "STRING",
    750            exp.DataType.Type.NVARCHAR: "STRING",
    751            exp.DataType.Type.SMALLINT: "INT64",
    752            exp.DataType.Type.TEXT: "STRING",
    753            exp.DataType.Type.TIMESTAMP: "DATETIME",
    754            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    755            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    756            exp.DataType.Type.TINYINT: "INT64",
    757            exp.DataType.Type.VARBINARY: "BYTES",
    758            exp.DataType.Type.ROWVERSION: "BYTES",
    759            exp.DataType.Type.VARCHAR: "STRING",
    760            exp.DataType.Type.VARIANT: "ANY TYPE",
    761        }
    762
    763        PROPERTIES_LOCATION = {
    764            **generator.Generator.PROPERTIES_LOCATION,
    765            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    766            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    767        }
    768
    769        # WINDOW comes after QUALIFY
    770        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    771        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    772            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    773            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    774        }
    775
    776        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    777        RESERVED_KEYWORDS = {
    778            "all",
    779            "and",
    780            "any",
    781            "array",
    782            "as",
    783            "asc",
    784            "assert_rows_modified",
    785            "at",
    786            "between",
    787            "by",
    788            "case",
    789            "cast",
    790            "collate",
    791            "contains",
    792            "create",
    793            "cross",
    794            "cube",
    795            "current",
    796            "default",
    797            "define",
    798            "desc",
    799            "distinct",
    800            "else",
    801            "end",
    802            "enum",
    803            "escape",
    804            "except",
    805            "exclude",
    806            "exists",
    807            "extract",
    808            "false",
    809            "fetch",
    810            "following",
    811            "for",
    812            "from",
    813            "full",
    814            "group",
    815            "grouping",
    816            "groups",
    817            "hash",
    818            "having",
    819            "if",
    820            "ignore",
    821            "in",
    822            "inner",
    823            "intersect",
    824            "interval",
    825            "into",
    826            "is",
    827            "join",
    828            "lateral",
    829            "left",
    830            "like",
    831            "limit",
    832            "lookup",
    833            "merge",
    834            "natural",
    835            "new",
    836            "no",
    837            "not",
    838            "null",
    839            "nulls",
    840            "of",
    841            "on",
    842            "or",
    843            "order",
    844            "outer",
    845            "over",
    846            "partition",
    847            "preceding",
    848            "proto",
    849            "qualify",
    850            "range",
    851            "recursive",
    852            "respect",
    853            "right",
    854            "rollup",
    855            "rows",
    856            "select",
    857            "set",
    858            "some",
    859            "struct",
    860            "tablesample",
    861            "then",
    862            "to",
    863            "treat",
    864            "true",
    865            "unbounded",
    866            "union",
    867            "unnest",
    868            "using",
    869            "when",
    870            "where",
    871            "window",
    872            "with",
    873            "within",
    874        }
    875
    876        def mod_sql(self, expression: exp.Mod) -> str:
    877            this = expression.this
    878            expr = expression.expression
    879            return self.func(
    880                "MOD",
    881                this.unnest() if isinstance(this, exp.Paren) else this,
    882                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    883            )
    884
    885        def column_parts(self, expression: exp.Column) -> str:
    886            if expression.meta.get("quoted_column"):
    887                # If a column reference is of the form `dataset.table`.name, we need
    888                # to preserve the quoted table path, otherwise the reference breaks
    889                table_parts = ".".join(p.name for p in expression.parts[:-1])
    890                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    891                return f"{table_path}.{self.sql(expression, 'this')}"
    892
    893            return super().column_parts(expression)
    894
    895        def table_parts(self, expression: exp.Table) -> str:
    896            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    897            # we need to make sure the correct quoting is used in each case.
    898            #
    899            # For example, if there is a CTE x that clashes with a schema name, then the former will
    900            # return the table y in that schema, whereas the latter will return the CTE's y column:
    901            #
    902            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    903            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    904            if expression.meta.get("quoted_table"):
    905                table_parts = ".".join(p.name for p in expression.parts)
    906                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    907
    908            return super().table_parts(expression)
    909
    910        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    911            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    912                func_name = "FORMAT_DATETIME"
    913            else:
    914                func_name = "FORMAT_DATE"
    915            this = (
    916                expression.this
    917                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    918                else expression
    919            )
    920            return self.func(func_name, self.format_time(expression), this.this)
    921
    922        def eq_sql(self, expression: exp.EQ) -> str:
    923            # Operands of = cannot be NULL in BigQuery
    924            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    925                if not isinstance(expression.parent, exp.Update):
    926                    return "NULL"
    927
    928            return self.binary(expression, "=")
    929
    930        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    931            parent = expression.parent
    932
    933            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    934            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    935            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    936                return self.func(
    937                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    938                )
    939
    940            return super().attimezone_sql(expression)
    941
    942        def trycast_sql(self, expression: exp.TryCast) -> str:
    943            return self.cast_sql(expression, safe_prefix="SAFE_")
    944
    945        def bracket_sql(self, expression: exp.Bracket) -> str:
    946            this = expression.this
    947            expressions = expression.expressions
    948
    949            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    950                arg = expressions[0]
    951                if arg.type is None:
    952                    from sqlglot.optimizer.annotate_types import annotate_types
    953
    954                    arg = annotate_types(arg)
    955
    956                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    957                    # BQ doesn't support bracket syntax with string values for structs
    958                    return f"{self.sql(this)}.{arg.name}"
    959
    960            expressions_sql = self.expressions(expression, flat=True)
    961            offset = expression.args.get("offset")
    962
    963            if offset == 0:
    964                expressions_sql = f"OFFSET({expressions_sql})"
    965            elif offset == 1:
    966                expressions_sql = f"ORDINAL({expressions_sql})"
    967            elif offset is not None:
    968                self.unsupported(f"Unsupported array offset: {offset}")
    969
    970            if expression.args.get("safe"):
    971                expressions_sql = f"SAFE_{expressions_sql}"
    972
    973            return f"{self.sql(this)}[{expressions_sql}]"
    974
    975        def in_unnest_op(self, expression: exp.Unnest) -> str:
    976            return self.sql(expression)
    977
    978        def version_sql(self, expression: exp.Version) -> str:
    979            if expression.name == "TIMESTAMP":
    980                expression.set("this", "SYSTEM_TIME")
    981            return super().version_sql(expression)

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

INTERVAL_ALLOWS_PLURAL_FORM = False
JOIN_HINTS = False
QUERY_HINTS = False
TABLE_HINTS = False
LIMIT_FETCH = 'LIMIT'
RENAME_TABLE_WITH_DB = False
NVL2_SUPPORTED = False
UNNEST_WITH_ORDINALITY = False
COLLATE_IS_FUNC = True
LIMIT_ONLY_LITERALS = True
SUPPORTS_TABLE_ALIAS_COLUMNS = False
UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
JSON_KEY_VALUE_PAIR_SEP = ','
NULL_ORDERING_SUPPORTED = False
IGNORE_NULLS_IN_FUNC = True
JSON_PATH_SINGLE_QUOTE_ESCAPE = True
CAN_IMPLEMENT_ARRAY_ANY = True
SUPPORTS_TO_NUMBER = False
NAMED_PLACEHOLDER_TOKEN = '@'
HEX_FUNC = 'TO_HEX'
WITH_PROPERTIES_PREFIX = 'OPTIONS'
SUPPORTS_EXPLODING_PROJECTIONS = False
EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
TRANSFORMS = {<class 'sqlglot.expressions.JSONPathKey'>: <function <lambda>>, <class 'sqlglot.expressions.JSONPathRoot'>: <function <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.EmptyProperty'>: <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.Except'>: <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.Intersect'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IntervalSpan'>: <function 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.Operator'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OutputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PathColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PivotAny'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ProjectionPolicyColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ReturnsProperty'>: <function _returnsproperty_sql>, <class 'sqlglot.expressions.SampleProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SecureProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SecurityProperty'>: <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 BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Stream'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StreamingTableProperty'>: <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.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.Union'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UnloggedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UppercaseColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function 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 arg_max_or_min_no_count.<locals>._arg_max_or_min_sql>, <class 'sqlglot.expressions.ArgMin'>: <function arg_max_or_min_no_count.<locals>._arg_max_or_min_sql>, <class 'sqlglot.expressions.Array'>: <function inline_array_unless_query>, <class 'sqlglot.expressions.ArrayContains'>: <function _array_contains_sql>, <class 'sqlglot.expressions.ArrayFilter'>: <function filter_array_using_unnest>, <class 'sqlglot.expressions.ArraySize'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Cast'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.CollateProperty'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Commit'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.CountIf'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Create'>: <function _create_sql>, <class 'sqlglot.expressions.CTE'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.DateAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DateDiff'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.DateFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DateStrToDate'>: <function datestrtodate_sql>, <class 'sqlglot.expressions.DateSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DatetimeAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DatetimeSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DateTrunc'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.FromTimeZone'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.GenerateSeries'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Hex'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.If'>: <function if_sql.<locals>._if_sql>, <class 'sqlglot.expressions.ILike'>: <function no_ilike_sql>, <class 'sqlglot.expressions.IntDiv'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.JSONFormat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Max'>: <function max_or_greatest>, <class 'sqlglot.expressions.MD5'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.MD5Digest'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Min'>: <function min_or_least>, <class 'sqlglot.expressions.PartitionedByProperty'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.RegexpExtract'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.RegexpReplace'>: <function regexp_replace_sql>, <class 'sqlglot.expressions.RegexpLike'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Rollback'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Select'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.SHA'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.SHA2'>: <function sha256_sql>, <class 'sqlglot.expressions.StrToDate'>: <function _str_to_datetime_sql>, <class 'sqlglot.expressions.StrToTime'>: <function _str_to_datetime_sql>, <class 'sqlglot.expressions.TimeAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimeFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimestampAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimestampDiff'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimeStrToTime'>: <function timestrtotime_sql>, <class 'sqlglot.expressions.Transaction'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.TsOrDsAdd'>: <function _ts_or_ds_add_sql>, <class 'sqlglot.expressions.TsOrDsDiff'>: <function _ts_or_ds_diff_sql>, <class 'sqlglot.expressions.TsOrDsToTime'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToTimestamp'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Unhex'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixDate'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTime'>: <function _unix_to_time_sql>, <class 'sqlglot.expressions.Values'>: <function _derived_table_values_to_unnest>, <class 'sqlglot.expressions.VariancePop'>: <function rename_func.<locals>.<lambda>>}
SUPPORTED_JSON_PATH_PARTS = {<class 'sqlglot.expressions.JSONPathSubscript'>, <class 'sqlglot.expressions.JSONPathKey'>, <class 'sqlglot.expressions.JSONPathRoot'>}
TYPE_MAPPING = {<Type.NCHAR: 'NCHAR'>: 'STRING', <Type.NVARCHAR: 'NVARCHAR'>: 'STRING', <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'>: 'BYTES', <Type.BIGDECIMAL: 'BIGDECIMAL'>: 'BIGNUMERIC', <Type.BIGINT: 'BIGINT'>: 'INT64', <Type.BINARY: 'BINARY'>: 'BYTES', <Type.BOOLEAN: 'BOOLEAN'>: 'BOOL', <Type.CHAR: 'CHAR'>: 'STRING', <Type.DECIMAL: 'DECIMAL'>: 'NUMERIC', <Type.DOUBLE: 'DOUBLE'>: 'FLOAT64', <Type.FLOAT: 'FLOAT'>: 'FLOAT64', <Type.INT: 'INT'>: 'INT64', <Type.SMALLINT: 'SMALLINT'>: 'INT64', <Type.TEXT: 'TEXT'>: 'STRING', <Type.TIMESTAMP: 'TIMESTAMP'>: 'DATETIME', <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: 'TIMESTAMP', <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: 'TIMESTAMP', <Type.TINYINT: 'TINYINT'>: 'INT64', <Type.VARBINARY: 'VARBINARY'>: 'BYTES', <Type.VARCHAR: 'VARCHAR'>: 'STRING', <Type.VARIANT: 'VARIANT'>: 'ANY TYPE'}
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.DistributedByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DuplicateKeyProperty'>: <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.EmptyProperty'>: <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_SCHEMA: 'POST_SCHEMA'>, <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.SecurityProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <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.POST_CREATE: 'POST_CREATE'>, <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.StreamingTableProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <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'>}
AFTER_HAVING_MODIFIER_TRANSFORMS = {'qualify': <function Generator.<lambda>>, 'windows': <function Generator.<lambda>>}
RESERVED_KEYWORDS = {'outer', 'over', 'full', 'for', 'end', 'define', 'default', 'intersect', 'of', 'with', 'proto', 'fetch', 'recursive', 'cast', 'nulls', 'window', 'into', 'null', 'having', 'partition', 'true', 'no', 'by', 'or', 'in', 'select', 'when', 'group', 'range', 'right', 'create', 'unnest', 'at', 'natural', 'some', 'grouping', 'assert_rows_modified', 'lateral', 'interval', 'following', 'treat', 'merge', 'union', 'and', 'to', 'exists', 'then', 'using', 'limit', 'left', 'collate', 'contains', 'groups', 'ignore', 'preceding', 'from', 'is', 'like', 'order', 'false', 'enum', 'escape', 'case', 'tablesample', 'set', 'where', 'if', 'not', 'array', 'new', 'as', 'desc', 'current', 'cube', 'distinct', 'extract', 'rollup', 'else', 'except', 'rows', 'all', 'lookup', 'asc', 'any', 'qualify', 'cross', 'unbounded', 'exclude', 'hash', 'join', 'on', 'between', 'struct', 'respect', 'within', 'inner'}
def mod_sql(self, expression: sqlglot.expressions.Mod) -> str: View Source

    876        def mod_sql(self, expression: exp.Mod) -> str:
    877            this = expression.this
    878            expr = expression.expression
    879            return self.func(
    880                "MOD",
    881                this.unnest() if isinstance(this, exp.Paren) else this,
    882                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    883            )

def column_parts(self, expression: sqlglot.expressions.Column) -> str: View Source

    885        def column_parts(self, expression: exp.Column) -> str:
    886            if expression.meta.get("quoted_column"):
    887                # If a column reference is of the form `dataset.table`.name, we need
    888                # to preserve the quoted table path, otherwise the reference breaks
    889                table_parts = ".".join(p.name for p in expression.parts[:-1])
    890                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    891                return f"{table_path}.{self.sql(expression, 'this')}"
    892
    893            return super().column_parts(expression)

def table_parts(self, expression: sqlglot.expressions.Table) -> str: View Source

    895        def table_parts(self, expression: exp.Table) -> str:
    896            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    897            # we need to make sure the correct quoting is used in each case.
    898            #
    899            # For example, if there is a CTE x that clashes with a schema name, then the former will
    900            # return the table y in that schema, whereas the latter will return the CTE's y column:
    901            #
    902            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    903            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    904            if expression.meta.get("quoted_table"):
    905                table_parts = ".".join(p.name for p in expression.parts)
    906                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    907
    908            return super().table_parts(expression)

def timetostr_sql(self, expression: sqlglot.expressions.TimeToStr) -> str: View Source

    910        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    911            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    912                func_name = "FORMAT_DATETIME"
    913            else:
    914                func_name = "FORMAT_DATE"
    915            this = (
    916                expression.this
    917                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    918                else expression
    919            )
    920            return self.func(func_name, self.format_time(expression), this.this)

def eq_sql(self, expression: sqlglot.expressions.EQ) -> str: View Source

    922        def eq_sql(self, expression: exp.EQ) -> str:
    923            # Operands of = cannot be NULL in BigQuery
    924            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    925                if not isinstance(expression.parent, exp.Update):
    926                    return "NULL"
    927
    928            return self.binary(expression, "=")

def attimezone_sql(self, expression: sqlglot.expressions.AtTimeZone) -> str: View Source

    930        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    931            parent = expression.parent
    932
    933            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    934            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    935            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    936                return self.func(
    937                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    938                )
    939
    940            return super().attimezone_sql(expression)

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

    942        def trycast_sql(self, expression: exp.TryCast) -> str:
    943            return self.cast_sql(expression, safe_prefix="SAFE_")

def bracket_sql(self, expression: sqlglot.expressions.Bracket) -> str: View Source

    945        def bracket_sql(self, expression: exp.Bracket) -> str:
    946            this = expression.this
    947            expressions = expression.expressions
    948
    949            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    950                arg = expressions[0]
    951                if arg.type is None:
    952                    from sqlglot.optimizer.annotate_types import annotate_types
    953
    954                    arg = annotate_types(arg)
    955
    956                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    957                    # BQ doesn't support bracket syntax with string values for structs
    958                    return f"{self.sql(this)}.{arg.name}"
    959
    960            expressions_sql = self.expressions(expression, flat=True)
    961            offset = expression.args.get("offset")
    962
    963            if offset == 0:
    964                expressions_sql = f"OFFSET({expressions_sql})"
    965            elif offset == 1:
    966                expressions_sql = f"ORDINAL({expressions_sql})"
    967            elif offset is not None:
    968                self.unsupported(f"Unsupported array offset: {offset}")
    969
    970            if expression.args.get("safe"):
    971                expressions_sql = f"SAFE_{expressions_sql}"
    972
    973            return f"{self.sql(this)}[{expressions_sql}]"

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

    975        def in_unnest_op(self, expression: exp.Unnest) -> str:
    976            return self.sql(expression)

def version_sql(self, expression: sqlglot.expressions.Version) -> str: View Source

    978        def version_sql(self, expression: exp.Version) -> str:
    979            if expression.name == "TIMESTAMP":
    980                expression.set("this", "SYSTEM_TIME")
    981            return super().version_sql(expression)

TRY_SUPPORTED = False
SUPPORTS_UESCAPE = False
SUPPORTS_NULLABLE_TYPES = False

##### Inherited Members

sqlglot.generator.Generator
  Generator
  LOCKING_READS_SUPPORTED
  WRAP_DERIVED_VALUES
  CREATE_FUNCTION_RETURN_AS
  MATCHED_BY_SOURCE
  SINGLE_STRING_INTERVAL
  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
  SELECT_KINDS
  VALUES_AS_TABLE
  ALTER_TABLE_INCLUDE_COLUMN_KEYWORD
  AGGREGATE_FILTER_SUPPORTED
  SEMI_ANTI_JOIN_WITH_SIDE
  COMPUTED_COLUMN_WITH_TYPE
  SUPPORTS_TABLE_COPY
  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
  INSERT_OVERWRITE
  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
  SET_OP_MODIFIERS
  COPY_PARAMS_ARE_WRAPPED
  COPY_PARAMS_EQ_REQUIRED
  COPY_HAS_INTO_KEYWORD
  STAR_EXCEPT
  QUOTE_JSON_PATH
  PAD_FILL_PATTERN_IS_REQUIRED
  ARRAY_CONCAT_IS_VAR_LEN
  SUPPORTS_CONVERT_TIMEZONE
  PARSE_JSON_NAME
  TIME_PART_SINGULARS
  TOKEN_MAPPING
  STRUCT_DELIMITER
  PARAMETER_TOKEN
  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_sql
  columnposition_sql
  columndef_sql
  columnconstraint_sql
  computedcolumnconstraint_sql
  autoincrementcolumnconstraint_sql
  compresscolumnconstraint_sql
  generatedasidentitycolumnconstraint_sql
  generatedasrowcolumnconstraint_sql
  periodforsystemtimeconstraint_sql
  notnullcolumnconstraint_sql
  transformcolumnconstraint_sql
  primarykeycolumnconstraint_sql
  uniquecolumnconstraint_sql
  createable_sql
  create_sql
  sequenceproperties_sql
  clone_sql
  describe_sql
  heredoc_sql
  prepend_ctes
  with_sql
  cte_sql
  tablealias_sql
  bitstring_sql
  hexstring_sql
  bytestring_sql
  unicodestring_sql
  rawstring_sql
  datatypeparam_sql
  datatype_sql
  directory_sql
  delete_sql
  drop_sql
  set_operation
  set_operations
  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
  with_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
  introducer_sql
  kill_sql
  pseudotype_sql
  objectidentifier_sql
  onconflict_sql
  returning_sql
  rowformatdelimitedproperty_sql
  withtablehint_sql
  indextablehint_sql
  historicaldata_sql
  table_sql
  tablesample_sql
  pivot_sql
  tuple_sql
  update_sql
  values_sql
  var_sql
  into_sql
  from_sql
  groupingsets_sql
  rollup_sql
  cube_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
  cluster_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
  unnest_sql
  prewhere_sql
  where_sql
  window_sql
  partition_by_sql
  windowspec_sql
  withingroup_sql
  between_sql
  bracket_offset_expressions
  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
  interval_sql
  return_sql
  reference_sql
  anonymous_sql
  paren_sql
  neg_sql
  not_sql
  alias_sql
  pivotalias_sql
  aliases_sql
  atindex_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
  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
  alterset_sql
  alter_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
  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
  mul_sql
  neq_sql
  nullsafeeq_sql
  nullsafeneq_sql
  slice_sql
  sub_sql
  try_sql
  log_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
  tonumber_sql
  dictproperty_sql
  dictrange_sql
  dictsubproperty_sql
  duplicatekeyproperty_sql
  distributedbyproperty_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
  toarray_sql
  tsordstotime_sql
  tsordstotimestamp_sql
  tsordstodate_sql
  unixdate_sql
  lastday_sql
  dateadd_sql
  arrayany_sql
  struct_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
  rand_sql
  changes_sql
  pad_sql
  summarize_sql
  explodinggenerateseries_sql
  arrayconcat_sql
  converttimezone_sql
  json_sql
  jsonvalue_sql
  conditionalinsert_sql
  multitableinserts_sql
  oncondition_sql
  jsonexists_sql
  arrayagg_sql