from unittest import mock

from sqlglot import (
    ErrorLevel,
    ParseError,
    TokenError,
    UnsupportedError,
    parse,
    transpile,
)
from sqlglot.helper import logger as helper_logger
from sqlglot.parser import logger as parser_logger
from tests.dialects.test_dialect import Validator


class TestBigQuery(Validator):
    dialect = "bigquery"
    maxDiff = None

    def test_bigquery(self):
        self.validate_all(
            "SELECT SUM(x IGNORE NULLS) AS x",
            read={
                "bigquery": "SELECT SUM(x IGNORE NULLS) AS x",
                "duckdb": "SELECT SUM(x IGNORE NULLS) AS x",
                "postgres": "SELECT SUM(x) IGNORE NULLS AS x",
                "spark": "SELECT SUM(x) IGNORE NULLS AS x",
                "snowflake": "SELECT SUM(x) IGNORE NULLS AS x",
            },
            write={
                "bigquery": "SELECT SUM(x IGNORE NULLS) AS x",
                "duckdb": "SELECT SUM(x IGNORE NULLS) AS x",
                "postgres": "SELECT SUM(x) IGNORE NULLS AS x",
                "spark": "SELECT SUM(x) IGNORE NULLS AS x",
                "snowflake": "SELECT SUM(x) IGNORE NULLS AS x",
            },
        )
        self.validate_all(
            "SELECT SUM(x RESPECT NULLS) AS x",
            read={
                "bigquery": "SELECT SUM(x RESPECT NULLS) AS x",
                "duckdb": "SELECT SUM(x RESPECT NULLS) AS x",
                "postgres": "SELECT SUM(x) RESPECT NULLS AS x",
                "spark": "SELECT SUM(x) RESPECT NULLS AS x",
                "snowflake": "SELECT SUM(x) RESPECT NULLS AS x",
            },
            write={
                "bigquery": "SELECT SUM(x RESPECT NULLS) AS x",
                "duckdb": "SELECT SUM(x RESPECT NULLS) AS x",
                "postgres": "SELECT SUM(x) RESPECT NULLS AS x",
                "spark": "SELECT SUM(x) RESPECT NULLS AS x",
                "snowflake": "SELECT SUM(x) RESPECT NULLS AS x",
            },
        )
        self.validate_all(
            "SELECT PERCENTILE_CONT(x, 0.5 RESPECT NULLS) OVER ()",
            write={
                "duckdb": "SELECT QUANTILE_CONT(x, 0.5 RESPECT NULLS) OVER ()",
                "spark": "SELECT PERCENTILE_CONT(x, 0.5) RESPECT NULLS OVER ()",
            },
        )
        self.validate_all(
            "SELECT ARRAY_AGG(DISTINCT x IGNORE NULLS ORDER BY a, b DESC LIMIT 10) AS x",
            write={
                "duckdb": "SELECT ARRAY_AGG(DISTINCT x ORDER BY a NULLS FIRST, b DESC LIMIT 10 IGNORE NULLS) AS x",
                "spark": "SELECT COLLECT_LIST(DISTINCT x ORDER BY a, b DESC LIMIT 10) IGNORE NULLS AS x",
            },
        )
        self.validate_all(
            "SELECT ARRAY_AGG(DISTINCT x IGNORE NULLS ORDER BY a, b DESC LIMIT 1, 10) AS x",
            write={
                "duckdb": "SELECT ARRAY_AGG(DISTINCT x ORDER BY a NULLS FIRST, b DESC LIMIT 1, 10 IGNORE NULLS) AS x",
                "spark": "SELECT COLLECT_LIST(DISTINCT x ORDER BY a, b DESC LIMIT 1, 10) IGNORE NULLS AS x",
            },
        )
        self.validate_identity("SELECT COUNT(x RESPECT NULLS)")
        self.validate_identity("SELECT LAST_VALUE(x IGNORE NULLS) OVER y AS x")

        self.validate_identity(
            "create or replace view test (tenant_id OPTIONS(description='Test description on table creation')) select 1 as tenant_id, 1 as customer_id;",
            "CREATE OR REPLACE VIEW test (tenant_id OPTIONS (description='Test description on table creation')) AS SELECT 1 AS tenant_id, 1 AS customer_id",
        )

        with self.assertLogs(helper_logger) as cm:
            statements = parse(
                """
            BEGIN
              DECLARE 1;
              IF from_date IS NULL THEN SET x = 1;
              END IF;
            END
            """,
                read="bigquery",
            )
            self.assertIn("unsupported syntax", cm.output[0])

        for actual, expected in zip(
            statements, ("BEGIN DECLARE 1", "IF from_date IS NULL THEN SET x = 1", "END IF", "END")
        ):
            self.assertEqual(actual.sql(dialect="bigquery"), expected)

        with self.assertLogs(helper_logger) as cm:
            self.validate_identity(
                "SELECT * FROM t AS t(c1, c2)",
                "SELECT * FROM t AS t",
            )

            self.assertEqual(
                cm.output, ["WARNING:sqlglot:Named columns are not supported in table alias."]
            )

        with self.assertLogs(helper_logger) as cm:
            self.validate_all(
                "SELECT a[1], b[OFFSET(1)], c[ORDINAL(1)], d[SAFE_OFFSET(1)], e[SAFE_ORDINAL(1)]",
                write={
                    "duckdb": "SELECT a[2], b[2], c[1], d[2], e[1]",
                    "bigquery": "SELECT a[1], b[OFFSET(1)], c[ORDINAL(1)], d[SAFE_OFFSET(1)], e[SAFE_ORDINAL(1)]",
                    "presto": "SELECT a[2], b[2], c[1], ELEMENT_AT(d, 2), ELEMENT_AT(e, 1)",
                },
            )

            self.validate_all(
                "a[0]",
                read={
                    "duckdb": "a[1]",
                    "presto": "a[1]",
                },
            )

        self.validate_identity(
            "select array_contains([1, 2, 3], 1)",
            "SELECT EXISTS(SELECT 1 FROM UNNEST([1, 2, 3]) AS _col WHERE _col = 1)",
        )
        self.validate_identity("CREATE SCHEMA x DEFAULT COLLATE 'en'")
        self.validate_identity("CREATE TABLE x (y INT64) DEFAULT COLLATE 'en'")
        self.validate_identity("PARSE_JSON('{}', wide_number_mode => 'exact')")

        with self.assertRaises(TokenError):
            transpile("'\\'", read="bigquery")

        # Reference: https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#set_operators
        with self.assertRaises(UnsupportedError):
            transpile(
                "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
                write="bigquery",
                unsupported_level=ErrorLevel.RAISE,
            )

        with self.assertRaises(UnsupportedError):
            transpile(
                "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
                write="bigquery",
                unsupported_level=ErrorLevel.RAISE,
            )

        with self.assertRaises(ParseError):
            transpile("SELECT * FROM UNNEST(x) AS x(y)", read="bigquery")

        with self.assertRaises(ParseError):
            transpile("DATE_ADD(x, day)", read="bigquery")

        with self.assertLogs(parser_logger) as cm:
            for_in_stmts = parse(
                "FOR record IN (SELECT word FROM shakespeare) DO SELECT record.word; END FOR;",
                read="bigquery",
            )
            self.assertEqual(
                [s.sql(dialect="bigquery") for s in for_in_stmts],
                ["FOR record IN (SELECT word FROM shakespeare) DO SELECT record.word", "END FOR"],
            )
            assert "'END FOR'" in cm.output[0]

        self.validate_identity("SELECT * FROM dataset.my_table TABLESAMPLE SYSTEM (10 PERCENT)")
        self.validate_identity("TIME('2008-12-25 15:30:00+08')")
        self.validate_identity("TIME('2008-12-25 15:30:00+08', 'America/Los_Angeles')")
        self.validate_identity("SELECT test.Unknown FROM test")
        self.validate_identity(r"SELECT '\n\r\a\v\f\t'")
        self.validate_identity("SELECT * FROM tbl FOR SYSTEM_TIME AS OF z")
        self.validate_identity("STRING_AGG(DISTINCT a ORDER BY b DESC, c DESC LIMIT 10)")
        self.validate_identity("SELECT PARSE_TIMESTAMP('%c', 'Thu Dec 25 07:30:00 2008', 'UTC')")
        self.validate_identity("SELECT ANY_VALUE(fruit HAVING MAX sold) FROM fruits")
        self.validate_identity("SELECT ANY_VALUE(fruit HAVING MIN sold) FROM fruits")
        self.validate_identity("SELECT `project-id`.udfs.func(call.dir)")
        self.validate_identity("SELECT CAST(CURRENT_DATE AS STRING FORMAT 'DAY') AS current_day")
        self.validate_identity("SAFE_CAST(encrypted_value AS STRING FORMAT 'BASE64')")
        self.validate_identity("CAST(encrypted_value AS STRING FORMAT 'BASE64')")
        self.validate_identity("CAST(STRUCT<a INT64>(1) AS STRUCT<a INT64>)")
        self.validate_identity("STRING_AGG(a)")
        self.validate_identity("STRING_AGG(a, ' & ')")
        self.validate_identity("STRING_AGG(DISTINCT a, ' & ')")
        self.validate_identity("STRING_AGG(a, ' & ' ORDER BY LENGTH(a))")
        self.validate_identity("DATE(2016, 12, 25)")
        self.validate_identity("DATE(CAST('2016-12-25 23:59:59' AS DATETIME))")
        self.validate_identity("SELECT foo IN UNNEST(bar) AS bla")
        self.validate_identity("SELECT * FROM x-0.a")
        self.validate_identity("SELECT * FROM pivot CROSS JOIN foo")
        self.validate_identity("SAFE_CAST(x AS STRING)")
        self.validate_identity("SELECT * FROM a-b-c.mydataset.mytable")
        self.validate_identity("SELECT * FROM abc-def-ghi")
        self.validate_identity("SELECT * FROM a-b-c")
        self.validate_identity("SELECT * FROM my-table")
        self.validate_identity("SELECT * FROM my-project.mydataset.mytable")
        self.validate_identity("SELECT * FROM pro-ject_id.c.d CROSS JOIN foo-bar")
        self.validate_identity("SELECT * FROM foo.bar.25", "SELECT * FROM foo.bar.`25`")
        self.validate_identity("SELECT * FROM foo.bar.25_", "SELECT * FROM foo.bar.`25_`")
        self.validate_identity("SELECT * FROM foo.bar.25x a", "SELECT * FROM foo.bar.`25x` AS a")
        self.validate_identity("SELECT * FROM foo.bar.25ab c", "SELECT * FROM foo.bar.`25ab` AS c")
        self.validate_identity("x <> ''")
        self.validate_identity("DATE_TRUNC(col, WEEK(MONDAY))")
        self.validate_identity("SELECT b'abc'")
        self.validate_identity("""SELECT * FROM UNNEST(ARRAY<STRUCT<x INT64>>[])""")
        self.validate_identity("SELECT AS STRUCT 1 AS a, 2 AS b")
        self.validate_identity("SELECT DISTINCT AS STRUCT 1 AS a, 2 AS b")
        self.validate_identity("SELECT AS VALUE STRUCT(1 AS a, 2 AS b)")
        self.validate_identity("SELECT STRUCT<ARRAY<STRING>>(['2023-01-17'])")
        self.validate_identity("SELECT STRUCT<STRING>((SELECT a FROM b.c LIMIT 1)).*")
        self.validate_identity("SELECT * FROM q UNPIVOT(values FOR quarter IN (b, c))")
        self.validate_identity("""CREATE TABLE x (a STRUCT<values ARRAY<INT64>>)""")
        self.validate_identity("""CREATE TABLE x (a STRUCT<b STRING OPTIONS (description='b')>)""")
        self.validate_identity("CAST(x AS TIMESTAMP)")
        self.validate_identity("REGEXP_EXTRACT(`foo`, 'bar: (.+?)', 1, 1)")
        self.validate_identity("BEGIN DECLARE y INT64", check_command_warning=True)
        self.validate_identity("BEGIN TRANSACTION")
        self.validate_identity("COMMIT TRANSACTION")
        self.validate_identity("ROLLBACK TRANSACTION")
        self.validate_identity("CAST(x AS BIGNUMERIC)")
        self.validate_identity("SELECT y + 1 FROM x GROUP BY y + 1 ORDER BY 1")
        self.validate_identity("SELECT TIMESTAMP_SECONDS(2) AS t")
        self.validate_identity("SELECT TIMESTAMP_MILLIS(2) AS t")
        self.validate_identity("""SELECT JSON_EXTRACT_SCALAR('{"a": 5}', '$.a')""")
        self.validate_identity(
            "FOR record IN (SELECT word, word_count FROM bigquery-public-data.samples.shakespeare LIMIT 5) DO SELECT record.word, record.word_count"
        )
        self.validate_identity(
            "DATE(CAST('2016-12-25 05:30:00+07' AS DATETIME), 'America/Los_Angeles')"
        )
        self.validate_identity(
            """CREATE TABLE x (a STRING OPTIONS (description='x')) OPTIONS (table_expiration_days=1)"""
        )
        self.validate_identity(
            "SELECT * FROM (SELECT * FROM `t`) AS a UNPIVOT((c) FOR c_name IN (v1, v2))"
        )
        self.validate_identity(
            "CREATE TABLE IF NOT EXISTS foo AS SELECT * FROM bla EXCEPT DISTINCT (SELECT * FROM bar) LIMIT 0"
        )
        self.validate_identity(
            "SELECT ROW() OVER (y ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING) FROM x WINDOW y AS (PARTITION BY CATEGORY)"
        )
        self.validate_identity(
            "SELECT item, purchases, LAST_VALUE(item) OVER (item_window ROWS BETWEEN 2 PRECEDING AND 2 FOLLOWING) AS most_popular FROM Produce WINDOW item_window AS (ORDER BY purchases)"
        )
        self.validate_identity(
            "SELECT LAST_VALUE(a IGNORE NULLS) OVER y FROM x WINDOW y AS (PARTITION BY CATEGORY)",
        )
        self.validate_identity(
            """SELECT JSON_EXTRACT_SCALAR('5')""", """SELECT JSON_EXTRACT_SCALAR('5', '$')"""
        )
        self.validate_identity(
            "SELECT SPLIT(foo)",
            "SELECT SPLIT(foo, ',')",
        )
        self.validate_identity(
            "SELECT 1 AS hash",
            "SELECT 1 AS `hash`",
        )
        self.validate_identity(
            "SELECT 1 AS at",
            "SELECT 1 AS `at`",
        )
        self.validate_identity(
            'x <> ""',
            "x <> ''",
        )
        self.validate_identity(
            'x <> """"""',
            "x <> ''",
        )
        self.validate_identity(
            "x <> ''''''",
            "x <> ''",
        )
        self.validate_identity(
            "SELECT a overlaps",
            "SELECT a AS overlaps",
        )
        self.validate_identity(
            "SELECT y + 1 z FROM x GROUP BY y + 1 ORDER BY z",
            "SELECT y + 1 AS z FROM x GROUP BY z ORDER BY z",
        )
        self.validate_identity(
            "SELECT y + 1 z FROM x GROUP BY y + 1",
            "SELECT y + 1 AS z FROM x GROUP BY y + 1",
        )
        self.validate_identity(
            """SELECT JSON '"foo"' AS json_data""",
            """SELECT PARSE_JSON('"foo"') AS json_data""",
        )
        self.validate_identity(
            "CREATE OR REPLACE TABLE `a.b.c` CLONE `a.b.d`",
            "CREATE OR REPLACE TABLE a.b.c CLONE a.b.d",
        )
        self.validate_identity(
            "SELECT * FROM UNNEST(x) WITH OFFSET EXCEPT DISTINCT SELECT * FROM UNNEST(y) WITH OFFSET",
            "SELECT * FROM UNNEST(x) WITH OFFSET AS offset EXCEPT DISTINCT SELECT * FROM UNNEST(y) WITH OFFSET AS offset",
        )

        self.validate_all(
            "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS 'semester_1', (Q3, Q4) AS 'semester_2'))",
            read={
                "spark": "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS semester_1, (Q3, Q4) AS semester_2))",
            },
            write={
                "bigquery": "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS 'semester_1', (Q3, Q4) AS 'semester_2'))",
                "spark": "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS semester_1, (Q3, Q4) AS semester_2))",
            },
        )
        self.validate_all(
            "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS 1, (Q3, Q4) AS 2))",
            write={
                "bigquery": "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS 1, (Q3, Q4) AS 2))",
                "spark": "SELECT * FROM Produce UNPIVOT((first_half_sales, second_half_sales) FOR semesters IN ((Q1, Q2) AS `1`, (Q3, Q4) AS `2`))",
            },
        )
        self.validate_all(
            "SELECT UNIX_DATE(DATE '2008-12-25')",
            write={
                "bigquery": "SELECT UNIX_DATE(CAST('2008-12-25' AS DATE))",
                "duckdb": "SELECT DATE_DIFF('DAY', CAST('1970-01-01' AS DATE), CAST('2008-12-25' AS DATE))",
            },
        )
        self.validate_all(
            "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), MONTH)",
            read={
                "snowflake": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), MONS)",
            },
            write={
                "bigquery": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), MONTH)",
                "duckdb": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "clickhouse": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "mysql": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "oracle": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "postgres": "SELECT CAST(DATE_TRUNC('MONTH', CAST('2008-11-25' AS DATE)) + INTERVAL '1 MONTH' - INTERVAL '1 DAY' AS DATE)",
                "presto": "SELECT LAST_DAY_OF_MONTH(CAST('2008-11-25' AS DATE))",
                "redshift": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "snowflake": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), MONTH)",
                "spark": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE))",
                "tsql": "SELECT EOMONTH(CAST('2008-11-25' AS DATE))",
            },
        )
        self.validate_all(
            "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), QUARTER)",
            read={
                "snowflake": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), QUARTER)",
            },
            write={
                "duckdb": UnsupportedError,
                "bigquery": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), QUARTER)",
                "snowflake": "SELECT LAST_DAY(CAST('2008-11-25' AS DATE), QUARTER)",
            },
        )
        self.validate_all(
            "CAST(x AS DATETIME)",
            read={
                "": "x::timestamp",
            },
        )
        self.validate_all(
            "SELECT TIME(15, 30, 00)",
            read={
                "duckdb": "SELECT MAKE_TIME(15, 30, 00)",
                "mysql": "SELECT MAKETIME(15, 30, 00)",
                "postgres": "SELECT MAKE_TIME(15, 30, 00)",
                "snowflake": "SELECT TIME_FROM_PARTS(15, 30, 00)",
            },
            write={
                "bigquery": "SELECT TIME(15, 30, 00)",
                "duckdb": "SELECT MAKE_TIME(15, 30, 00)",
                "mysql": "SELECT MAKETIME(15, 30, 00)",
                "postgres": "SELECT MAKE_TIME(15, 30, 00)",
                "snowflake": "SELECT TIME_FROM_PARTS(15, 30, 00)",
                "tsql": "SELECT TIMEFROMPARTS(15, 30, 00, 0, 0)",
            },
        )
        self.validate_all(
            "SELECT TIME('2008-12-25 15:30:00')",
            write={
                "bigquery": "SELECT TIME('2008-12-25 15:30:00')",
                "duckdb": "SELECT CAST('2008-12-25 15:30:00' AS TIME)",
                "mysql": "SELECT CAST('2008-12-25 15:30:00' AS TIME)",
                "postgres": "SELECT CAST('2008-12-25 15:30:00' AS TIME)",
                "redshift": "SELECT CAST('2008-12-25 15:30:00' AS TIME)",
                "spark": "SELECT CAST('2008-12-25 15:30:00' AS TIMESTAMP)",
                "tsql": "SELECT CAST('2008-12-25 15:30:00' AS TIME)",
            },
        )
        self.validate_all(
            "SELECT FORMAT_DATE('%Y%m%d', '2023-12-25')",
            write={
                "bigquery": "SELECT FORMAT_DATE('%Y%m%d', '2023-12-25')",
                "duckdb": "SELECT STRFTIME(CAST('2023-12-25' AS DATE), '%Y%m%d')",
            },
        )
        self.validate_all(
            "SELECT COUNTIF(x)",
            read={
                "clickhouse": "SELECT countIf(x)",
                "duckdb": "SELECT COUNT_IF(x)",
            },
            write={
                "bigquery": "SELECT COUNTIF(x)",
                "clickhouse": "SELECT countIf(x)",
                "duckdb": "SELECT COUNT_IF(x)",
            },
        )
        self.validate_all(
            "SELECT TIMESTAMP_DIFF(TIMESTAMP_SECONDS(60), TIMESTAMP_SECONDS(0), minute)",
            write={
                "bigquery": "SELECT TIMESTAMP_DIFF(TIMESTAMP_SECONDS(60), TIMESTAMP_SECONDS(0), MINUTE)",
                "databricks": "SELECT TIMESTAMPDIFF(MINUTE, CAST(FROM_UNIXTIME(0) AS TIMESTAMP), CAST(FROM_UNIXTIME(60) AS TIMESTAMP))",
                "duckdb": "SELECT DATE_DIFF('MINUTE', TO_TIMESTAMP(0), TO_TIMESTAMP(60))",
                "snowflake": "SELECT TIMESTAMPDIFF(MINUTE, TO_TIMESTAMP(0), TO_TIMESTAMP(60))",
            },
        )
        self.validate_all(
            "TIMESTAMP_DIFF(a, b, MONTH)",
            read={
                "bigquery": "TIMESTAMP_DIFF(a, b, month)",
                "databricks": "TIMESTAMPDIFF(month, b, a)",
                "mysql": "TIMESTAMPDIFF(month, b, a)",
            },
            write={
                "databricks": "TIMESTAMPDIFF(MONTH, b, a)",
                "mysql": "TIMESTAMPDIFF(MONTH, b, a)",
                "snowflake": "TIMESTAMPDIFF(MONTH, b, a)",
            },
        )

        self.validate_all(
            "SELECT TIMESTAMP_MICROS(x)",
            read={
                "duckdb": "SELECT MAKE_TIMESTAMP(x)",
                "spark": "SELECT TIMESTAMP_MICROS(x)",
            },
            write={
                "bigquery": "SELECT TIMESTAMP_MICROS(x)",
                "duckdb": "SELECT MAKE_TIMESTAMP(x)",
                "snowflake": "SELECT TO_TIMESTAMP(x, 6)",
                "spark": "SELECT TIMESTAMP_MICROS(x)",
            },
        )
        self.validate_all(
            "SELECT * FROM t WHERE EXISTS(SELECT * FROM unnest(nums) AS x WHERE x > 1)",
            write={
                "bigquery": "SELECT * FROM t WHERE EXISTS(SELECT * FROM UNNEST(nums) AS x WHERE x > 1)",
                "duckdb": "SELECT * FROM t WHERE EXISTS(SELECT * FROM UNNEST(nums) AS _t(x) WHERE x > 1)",
            },
        )
        self.validate_identity("UPDATE x SET y = NULL")
        self.validate_all(
            "NULL",
            read={
                "duckdb": "NULL = a",
                "postgres": "a = NULL",
            },
        )
        self.validate_all(
            "SELECT '\\n'",
            read={
                "bigquery": "SELECT '''\n'''",
            },
            write={
                "bigquery": "SELECT '\\n'",
                "postgres": "SELECT '\n'",
            },
        )
        self.validate_all(
            "TRIM(item, '*')",
            read={
                "snowflake": "TRIM(item, '*')",
                "spark": "TRIM('*', item)",
            },
            write={
                "bigquery": "TRIM(item, '*')",
                "snowflake": "TRIM(item, '*')",
                "spark": "TRIM('*' FROM item)",
            },
        )
        self.validate_all(
            "CREATE OR REPLACE TABLE `a.b.c` COPY `a.b.d`",
            write={
                "bigquery": "CREATE OR REPLACE TABLE a.b.c COPY a.b.d",
                "snowflake": "CREATE OR REPLACE TABLE a.b.c CLONE a.b.d",
            },
        )
        (
            self.validate_all(
                "SELECT DATETIME_DIFF('2023-01-01T00:00:00', '2023-01-01T05:00:00', MILLISECOND)",
                write={
                    "bigquery": "SELECT DATETIME_DIFF('2023-01-01T00:00:00', '2023-01-01T05:00:00', MILLISECOND)",
                    "databricks": "SELECT TIMESTAMPDIFF(MILLISECOND, '2023-01-01T05:00:00', '2023-01-01T00:00:00')",
                },
            ),
        )
        (
            self.validate_all(
                "SELECT DATETIME_ADD('2023-01-01T00:00:00', INTERVAL 1 MILLISECOND)",
                write={
                    "bigquery": "SELECT DATETIME_ADD('2023-01-01T00:00:00', INTERVAL 1 MILLISECOND)",
                    "databricks": "SELECT TIMESTAMPADD(MILLISECOND, 1, '2023-01-01T00:00:00')",
                },
            ),
        )
        (
            self.validate_all(
                "SELECT DATETIME_SUB('2023-01-01T00:00:00', INTERVAL 1 MILLISECOND)",
                write={
                    "bigquery": "SELECT DATETIME_SUB('2023-01-01T00:00:00', INTERVAL 1 MILLISECOND)",
                    "databricks": "SELECT TIMESTAMPADD(MILLISECOND, 1 * -1, '2023-01-01T00:00:00')",
                },
            ),
        )
        (
            self.validate_all(
                "SELECT DATETIME_TRUNC('2023-01-01T01:01:01', HOUR)",
                write={
                    "bigquery": "SELECT DATETIME_TRUNC('2023-01-01T01:01:01', HOUR)",
                    "databricks": "SELECT DATE_TRUNC('HOUR', '2023-01-01T01:01:01')",
                },
            ),
        )
        self.validate_all("LEAST(x, y)", read={"sqlite": "MIN(x, y)"})
        self.validate_all("CAST(x AS CHAR)", write={"bigquery": "CAST(x AS STRING)"})
        self.validate_all("CAST(x AS NCHAR)", write={"bigquery": "CAST(x AS STRING)"})
        self.validate_all("CAST(x AS NVARCHAR)", write={"bigquery": "CAST(x AS STRING)"})
        self.validate_all("CAST(x AS TIMESTAMPTZ)", write={"bigquery": "CAST(x AS TIMESTAMP)"})
        self.validate_all("CAST(x AS RECORD)", write={"bigquery": "CAST(x AS STRUCT)"})
        self.validate_all(
            'SELECT TIMESTAMP_ADD(TIMESTAMP "2008-12-25 15:30:00+00", INTERVAL 10 MINUTE)',
            write={
                "bigquery": "SELECT TIMESTAMP_ADD(CAST('2008-12-25 15:30:00+00' AS TIMESTAMP), INTERVAL 10 MINUTE)",
                "databricks": "SELECT DATEADD(MINUTE, 10, CAST('2008-12-25 15:30:00+00' AS TIMESTAMP))",
                "mysql": "SELECT DATE_ADD(TIMESTAMP('2008-12-25 15:30:00+00'), INTERVAL 10 MINUTE)",
                "spark": "SELECT DATEADD(MINUTE, 10, CAST('2008-12-25 15:30:00+00' AS TIMESTAMP))",
            },
        )
        self.validate_all(
            'SELECT TIMESTAMP_SUB(TIMESTAMP "2008-12-25 15:30:00+00", INTERVAL 10 MINUTE)',
            write={
                "bigquery": "SELECT TIMESTAMP_SUB(CAST('2008-12-25 15:30:00+00' AS TIMESTAMP), INTERVAL 10 MINUTE)",
                "mysql": "SELECT DATE_SUB(TIMESTAMP('2008-12-25 15:30:00+00'), INTERVAL 10 MINUTE)",
            },
        )
        self.validate_all(
            "MD5(x)",
            write={
                "": "MD5_DIGEST(x)",
                "bigquery": "MD5(x)",
                "hive": "UNHEX(MD5(x))",
                "spark": "UNHEX(MD5(x))",
            },
        )
        self.validate_all(
            "SELECT TO_HEX(MD5(some_string))",
            read={
                "duckdb": "SELECT MD5(some_string)",
                "spark": "SELECT MD5(some_string)",
            },
            write={
                "": "SELECT MD5(some_string)",
                "bigquery": "SELECT TO_HEX(MD5(some_string))",
                "duckdb": "SELECT MD5(some_string)",
            },
        )
        self.validate_all(
            "SHA256(x)",
            write={
                "bigquery": "SHA256(x)",
                "spark2": "SHA2(x, 256)",
            },
        )
        self.validate_all(
            "SHA512(x)",
            write={
                "bigquery": "SHA512(x)",
                "spark2": "SHA2(x, 512)",
            },
        )
        self.validate_all(
            "SELECT CAST('20201225' AS TIMESTAMP FORMAT 'YYYYMMDD' AT TIME ZONE 'America/New_York')",
            write={"bigquery": "SELECT PARSE_TIMESTAMP('%Y%m%d', '20201225', 'America/New_York')"},
        )
        self.validate_all(
            "SELECT CAST('20201225' AS TIMESTAMP FORMAT 'YYYYMMDD')",
            write={"bigquery": "SELECT PARSE_TIMESTAMP('%Y%m%d', '20201225')"},
        )
        self.validate_all(
            "SELECT CAST(TIMESTAMP '2008-12-25 00:00:00+00:00' AS STRING FORMAT 'YYYY-MM-DD HH24:MI:SS TZH:TZM') AS date_time_to_string",
            write={
                "bigquery": "SELECT CAST(CAST('2008-12-25 00:00:00+00:00' AS TIMESTAMP) AS STRING FORMAT 'YYYY-MM-DD HH24:MI:SS TZH:TZM') AS date_time_to_string",
            },
        )
        self.validate_all(
            "SELECT CAST(TIMESTAMP '2008-12-25 00:00:00+00:00' AS STRING FORMAT 'YYYY-MM-DD HH24:MI:SS TZH:TZM' AT TIME ZONE 'Asia/Kolkata') AS date_time_to_string",
            write={
                "bigquery": "SELECT CAST(CAST('2008-12-25 00:00:00+00:00' AS TIMESTAMP) AS STRING FORMAT 'YYYY-MM-DD HH24:MI:SS TZH:TZM' AT TIME ZONE 'Asia/Kolkata') AS date_time_to_string",
            },
        )
        self.validate_all(
            "WITH cte AS (SELECT [1, 2, 3] AS arr) SELECT IF(pos = pos_2, col, NULL) AS col FROM cte CROSS JOIN UNNEST(GENERATE_ARRAY(0, GREATEST(ARRAY_LENGTH(arr)) - 1)) AS pos CROSS JOIN UNNEST(arr) AS col WITH OFFSET AS pos_2 WHERE pos = pos_2 OR (pos > (ARRAY_LENGTH(arr) - 1) AND pos_2 = (ARRAY_LENGTH(arr) - 1))",
            read={
                "spark": "WITH cte AS (SELECT ARRAY(1, 2, 3) AS arr) SELECT EXPLODE(arr) FROM cte"
            },
        )
        self.validate_all(
            "SELECT AS STRUCT ARRAY(SELECT AS STRUCT b FROM x) AS y FROM z",
            write={
                "": "SELECT AS STRUCT ARRAY(SELECT AS STRUCT b FROM x) AS y FROM z",
                "bigquery": "SELECT AS STRUCT ARRAY(SELECT AS STRUCT b FROM x) AS y FROM z",
                "duckdb": "SELECT {'y': ARRAY(SELECT {'b': b} FROM x)} FROM z",
            },
        )
        self.validate_all(
            "cast(x as date format 'MM/DD/YYYY')",
            write={
                "bigquery": "PARSE_DATE('%m/%d/%Y', x)",
            },
        )
        self.validate_all(
            "cast(x as time format 'YYYY.MM.DD HH:MI:SSTZH')",
            write={
                "bigquery": "PARSE_TIMESTAMP('%Y.%m.%d %I:%M:%S%z', x)",
            },
        )
        self.validate_all(
            "CREATE TEMP TABLE foo AS SELECT 1",
            write={"bigquery": "CREATE TEMPORARY TABLE foo AS SELECT 1"},
        )
        self.validate_all(
            "SELECT * FROM `SOME_PROJECT_ID.SOME_DATASET_ID.INFORMATION_SCHEMA.SOME_VIEW`",
            write={
                "bigquery": "SELECT * FROM SOME_PROJECT_ID.SOME_DATASET_ID.INFORMATION_SCHEMA.SOME_VIEW",
            },
        )
        self.validate_all(
            "SELECT * FROM `my-project.my-dataset.my-table`",
            write={"bigquery": "SELECT * FROM `my-project`.`my-dataset`.`my-table`"},
        )
        self.validate_all(
            "SELECT ARRAY(SELECT AS STRUCT 1 a, 2 b)",
            write={
                "bigquery": "SELECT ARRAY(SELECT AS STRUCT 1 AS a, 2 AS b)",
            },
        )
        self.validate_identity(
            r"REGEXP_EXTRACT(svc_plugin_output, r'\\\((.*)')",
            r"REGEXP_EXTRACT(svc_plugin_output, '\\\\\\((.*)')",
        )
        self.validate_all(
            "REGEXP_CONTAINS('foo', '.*')",
            read={
                "bigquery": "REGEXP_CONTAINS('foo', '.*')",
                "mysql": "REGEXP_LIKE('foo', '.*')",
                "starrocks": "REGEXP('foo', '.*')",
            },
            write={
                "mysql": "REGEXP_LIKE('foo', '.*')",
                "starrocks": "REGEXP('foo', '.*')",
            },
        )
        self.validate_all(
            '"""x"""',
            write={
                "bigquery": "'x'",
                "duckdb": "'x'",
                "presto": "'x'",
                "hive": "'x'",
                "spark": "'x'",
            },
        )
        self.validate_all(
            '"""x\'"""',
            write={
                "bigquery": "'x\\''",
                "duckdb": "'x'''",
                "presto": "'x'''",
                "hive": "'x\\''",
                "spark": "'x\\''",
            },
        )
        self.validate_all(
            "r'x\\''",
            write={
                "bigquery": "'x\\''",
                "hive": "'x\\''",
            },
        )

        self.validate_all(
            "r'x\\y'",
            write={
                "bigquery": "'x\\\\y'",
                "hive": "'x\\\\y'",
            },
        )
        self.validate_all(
            "'\\\\'",
            write={
                "bigquery": r"'\\'",
                "duckdb": r"'\\'",
                "presto": r"'\\'",
                "hive": r"'\\'",
            },
        )
        self.validate_all(
            r'r"""/\*.*\*/"""',
            write={
                "bigquery": r"'/\\*.*\\*/'",
                "duckdb": r"'/\\*.*\\*/'",
                "presto": r"'/\\*.*\\*/'",
                "hive": r"'/\\*.*\\*/'",
                "spark": r"'/\\*.*\\*/'",
            },
        )
        self.validate_all(
            r'R"""/\*.*\*/"""',
            write={
                "bigquery": r"'/\\*.*\\*/'",
                "duckdb": r"'/\\*.*\\*/'",
                "presto": r"'/\\*.*\\*/'",
                "hive": r"'/\\*.*\\*/'",
                "spark": r"'/\\*.*\\*/'",
            },
        )
        self.validate_all(
            'r"""a\n"""',
            write={
                "bigquery": "'a\\n'",
                "duckdb": "'a\n'",
            },
        )
        self.validate_all(
            '"""a\n"""',
            write={
                "bigquery": "'a\\n'",
                "duckdb": "'a\n'",
            },
        )
        self.validate_all(
            "CAST(a AS INT64)",
            write={
                "bigquery": "CAST(a AS INT64)",
                "duckdb": "CAST(a AS BIGINT)",
                "presto": "CAST(a AS BIGINT)",
                "hive": "CAST(a AS BIGINT)",
                "spark": "CAST(a AS BIGINT)",
            },
        )
        self.validate_all(
            "CAST(a AS BYTES)",
            write={
                "bigquery": "CAST(a AS BYTES)",
                "duckdb": "CAST(a AS BLOB)",
                "presto": "CAST(a AS VARBINARY)",
                "hive": "CAST(a AS BINARY)",
                "spark": "CAST(a AS BINARY)",
            },
        )
        self.validate_all(
            "CAST(a AS NUMERIC)",
            write={
                "bigquery": "CAST(a AS NUMERIC)",
                "duckdb": "CAST(a AS DECIMAL)",
                "presto": "CAST(a AS DECIMAL)",
                "hive": "CAST(a AS DECIMAL)",
                "spark": "CAST(a AS DECIMAL)",
            },
        )
        self.validate_all(
            "[1, 2, 3]",
            read={
                "duckdb": "[1, 2, 3]",
                "presto": "ARRAY[1, 2, 3]",
                "hive": "ARRAY(1, 2, 3)",
                "spark": "ARRAY(1, 2, 3)",
            },
            write={
                "bigquery": "[1, 2, 3]",
                "duckdb": "[1, 2, 3]",
                "presto": "ARRAY[1, 2, 3]",
                "hive": "ARRAY(1, 2, 3)",
                "spark": "ARRAY(1, 2, 3)",
            },
        )
        self.validate_all(
            "SELECT * FROM UNNEST(['7', '14']) AS x",
            read={
                "spark": "SELECT * FROM UNNEST(ARRAY('7', '14')) AS (x)",
            },
            write={
                "bigquery": "SELECT * FROM UNNEST(['7', '14']) AS x",
                "presto": "SELECT * FROM UNNEST(ARRAY['7', '14']) AS _t(x)",
                "spark": "SELECT * FROM UNNEST(ARRAY('7', '14')) AS _t(x)",
            },
        )
        self.validate_all(
            "SELECT ARRAY(SELECT x FROM UNNEST([0, 1]) AS x)",
            write={"bigquery": "SELECT ARRAY(SELECT x FROM UNNEST([0, 1]) AS x)"},
        )
        self.validate_all(
            "SELECT ARRAY(SELECT DISTINCT x FROM UNNEST(some_numbers) AS x) AS unique_numbers",
            write={
                "bigquery": "SELECT ARRAY(SELECT DISTINCT x FROM UNNEST(some_numbers) AS x) AS unique_numbers"
            },
        )
        self.validate_all(
            "SELECT ARRAY(SELECT * FROM foo JOIN bla ON x = y)",
            write={"bigquery": "SELECT ARRAY(SELECT * FROM foo JOIN bla ON x = y)"},
        )
        self.validate_all(
            "x IS unknown",
            write={
                "bigquery": "x IS NULL",
                "duckdb": "x IS NULL",
                "presto": "x IS NULL",
                "hive": "x IS NULL",
                "spark": "x IS NULL",
            },
        )
        self.validate_all(
            "x IS NOT unknown",
            write={
                "bigquery": "NOT x IS NULL",
                "duckdb": "NOT x IS NULL",
                "presto": "NOT x IS NULL",
                "hive": "NOT x IS NULL",
                "spark": "NOT x IS NULL",
            },
        )
        self.validate_all(
            "CURRENT_TIMESTAMP()",
            read={
                "tsql": "GETDATE()",
            },
            write={
                "tsql": "GETDATE()",
            },
        )
        self.validate_all(
            "current_datetime",
            write={
                "bigquery": "CURRENT_DATETIME()",
                "presto": "CURRENT_DATETIME()",
                "hive": "CURRENT_DATETIME()",
                "spark": "CURRENT_DATETIME()",
            },
        )
        self.validate_all(
            "current_time",
            write={
                "bigquery": "CURRENT_TIME()",
                "duckdb": "CURRENT_TIME",
                "presto": "CURRENT_TIME()",
                "hive": "CURRENT_TIME()",
                "spark": "CURRENT_TIME()",
            },
        )
        self.validate_all(
            "CURRENT_TIMESTAMP",
            write={
                "bigquery": "CURRENT_TIMESTAMP()",
                "duckdb": "CURRENT_TIMESTAMP",
                "postgres": "CURRENT_TIMESTAMP",
                "presto": "CURRENT_TIMESTAMP",
                "hive": "CURRENT_TIMESTAMP()",
                "spark": "CURRENT_TIMESTAMP()",
            },
        )
        self.validate_all(
            "CURRENT_TIMESTAMP()",
            write={
                "bigquery": "CURRENT_TIMESTAMP()",
                "duckdb": "CURRENT_TIMESTAMP",
                "postgres": "CURRENT_TIMESTAMP",
                "presto": "CURRENT_TIMESTAMP",
                "hive": "CURRENT_TIMESTAMP()",
                "spark": "CURRENT_TIMESTAMP()",
            },
        )
        self.validate_all(
            "DIV(x, y)",
            write={
                "bigquery": "DIV(x, y)",
                "duckdb": "x // y",
            },
        )
        self.validate_all(
            "CREATE TABLE db.example_table (col_a struct<struct_col_a:int, struct_col_b:string>)",
            write={
                "bigquery": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRING>)",
                "duckdb": "CREATE TABLE db.example_table (col_a STRUCT(struct_col_a INT, struct_col_b TEXT))",
                "presto": "CREATE TABLE db.example_table (col_a ROW(struct_col_a INTEGER, struct_col_b VARCHAR))",
                "hive": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT, struct_col_b STRING>)",
                "spark": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a: INT, struct_col_b: STRING>)",
            },
        )
        self.validate_all(
            "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
            write={
                "bigquery": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
                "duckdb": "CREATE TABLE db.example_table (col_a STRUCT(struct_col_a BIGINT, struct_col_b STRUCT(nested_col_a TEXT, nested_col_b TEXT)))",
                "presto": "CREATE TABLE db.example_table (col_a ROW(struct_col_a BIGINT, struct_col_b ROW(nested_col_a VARCHAR, nested_col_b VARCHAR)))",
                "hive": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a BIGINT, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
                "spark": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a: BIGINT, struct_col_b: STRUCT<nested_col_a: STRING, nested_col_b: STRING>>)",
            },
        )
        self.validate_all(
            "CREATE TABLE db.example_table (x int) PARTITION BY x cluster by x",
            write={
                "bigquery": "CREATE TABLE db.example_table (x INT64) PARTITION BY x CLUSTER BY x",
            },
        )
        self.validate_all(
            "SELECT * FROM a WHERE b IN UNNEST([1, 2, 3])",
            write={
                "bigquery": "SELECT * FROM a WHERE b IN UNNEST([1, 2, 3])",
                "mysql": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
                "presto": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY[1, 2, 3]))",
                "hive": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
                "spark": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
            },
        )
        self.validate_all(
            "DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)",
            write={
                "postgres": "CURRENT_DATE - INTERVAL '1 DAY'",
                "bigquery": "DATE_SUB(CURRENT_DATE, INTERVAL 1 DAY)",
            },
        )
        self.validate_all(
            "DATE_ADD(CURRENT_DATE(), INTERVAL 1 DAY)",
            write={
                "bigquery": "DATE_ADD(CURRENT_DATE, INTERVAL 1 DAY)",
                "duckdb": "CURRENT_DATE + INTERVAL 1 DAY",
                "mysql": "DATE_ADD(CURRENT_DATE, INTERVAL 1 DAY)",
                "postgres": "CURRENT_DATE + INTERVAL '1 DAY'",
                "presto": "DATE_ADD('DAY', 1, CURRENT_DATE)",
                "hive": "DATE_ADD(CURRENT_DATE, 1)",
                "spark": "DATE_ADD(CURRENT_DATE, 1)",
            },
        )
        self.validate_all(
            "DATE_DIFF(DATE '2010-07-07', DATE '2008-12-25', DAY)",
            write={
                "bigquery": "DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), DAY)",
                "mysql": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
                "starrocks": "DATE_DIFF('DAY', CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
            },
        )
        self.validate_all(
            "DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), DAY)",
            read={
                "mysql": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
                "starrocks": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
            },
        )
        self.validate_all(
            "DATE_DIFF(DATE '2010-07-07', DATE '2008-12-25', MINUTE)",
            write={
                "bigquery": "DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), MINUTE)",
                "starrocks": "DATE_DIFF('MINUTE', CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
            },
        )
        self.validate_all(
            "CURRENT_DATE('UTC')",
            write={
                "mysql": "CURRENT_DATE AT TIME ZONE 'UTC'",
                "postgres": "CURRENT_DATE AT TIME ZONE 'UTC'",
            },
        )
        self.validate_identity(
            "SELECT * FROM test QUALIFY a IS DISTINCT FROM b WINDOW c AS (PARTITION BY d)"
        )
        self.validate_all(
            "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
            write={
                "bigquery": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
                "snowflake": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a NULLS FIRST LIMIT 10",
            },
        )
        self.validate_all(
            "SELECT cola, colb FROM (VALUES (1, 'test')) AS tab(cola, colb)",
            write={
                "spark": "SELECT cola, colb FROM VALUES (1, 'test') AS tab(cola, colb)",
                "bigquery": "SELECT cola, colb FROM UNNEST([STRUCT(1 AS cola, 'test' AS colb)])",
                "snowflake": "SELECT cola, colb FROM (VALUES (1, 'test')) AS tab(cola, colb)",
            },
        )
        self.validate_all(
            "SELECT cola, colb FROM (VALUES (1, 'test')) AS tab",
            write={
                "bigquery": "SELECT cola, colb FROM UNNEST([STRUCT(1 AS _c0, 'test' AS _c1)])",
            },
        )
        self.validate_all(
            "SELECT cola, colb FROM (VALUES (1, 'test'))",
            write={
                "bigquery": "SELECT cola, colb FROM UNNEST([STRUCT(1 AS _c0, 'test' AS _c1)])",
            },
        )
        self.validate_all(
            "SELECT * FROM UNNEST([STRUCT(1 AS id)]) CROSS JOIN UNNEST([STRUCT(1 AS id)])",
            read={
                "postgres": "SELECT * FROM (VALUES (1)) AS t1(id) CROSS JOIN (VALUES (1)) AS t2(id)",
            },
        )
        self.validate_all(
            "SELECT cola, colb, colc FROM (VALUES (1, 'test', NULL)) AS tab(cola, colb, colc)",
            write={
                "spark": "SELECT cola, colb, colc FROM VALUES (1, 'test', NULL) AS tab(cola, colb, colc)",
                "bigquery": "SELECT cola, colb, colc FROM UNNEST([STRUCT(1 AS cola, 'test' AS colb, NULL AS colc)])",
                "snowflake": "SELECT cola, colb, colc FROM (VALUES (1, 'test', NULL)) AS tab(cola, colb, colc)",
            },
        )
        self.validate_all(
            "SELECT * FROM (SELECT a, b, c FROM test) PIVOT(SUM(b) d, COUNT(*) e FOR c IN ('x', 'y'))",
            write={
                "bigquery": "SELECT * FROM (SELECT a, b, c FROM test) PIVOT(SUM(b) AS d, COUNT(*) AS e FOR c IN ('x', 'y'))",
            },
        )
        self.validate_all(
            "SELECT REGEXP_EXTRACT(abc, 'pattern(group)') FROM table",
            write={
                "bigquery": "SELECT REGEXP_EXTRACT(abc, 'pattern(group)') FROM table",
                "duckdb": "SELECT REGEXP_EXTRACT(abc, 'pattern(group)', 1) FROM table",
            },
        )
        self.validate_all(
            "SELECT * FROM UNNEST([1]) WITH OFFSET",
            write={"bigquery": "SELECT * FROM UNNEST([1]) WITH OFFSET AS offset"},
        )
        self.validate_all(
            "SELECT * FROM UNNEST([1]) WITH OFFSET y",
            write={"bigquery": "SELECT * FROM UNNEST([1]) WITH OFFSET AS y"},
        )
        self.validate_all(
            "GENERATE_ARRAY(1, 4)",
            read={"bigquery": "GENERATE_ARRAY(1, 4)"},
            write={"duckdb": "GENERATE_SERIES(1, 4)"},
        )
        self.validate_all(
            "TO_JSON_STRING(x)",
            read={"bigquery": "TO_JSON_STRING(x)"},
            write={
                "bigquery": "TO_JSON_STRING(x)",
                "duckdb": "CAST(TO_JSON(x) AS TEXT)",
                "presto": "JSON_FORMAT(x)",
                "spark": "TO_JSON(x)",
            },
        )
        self.validate_all(
            """SELECT
  `u`.`harness_user_email` AS `harness_user_email`,
  `d`.`harness_user_id` AS `harness_user_id`,
  `harness_account_id` AS `harness_account_id`
FROM `analytics_staging`.`stg_mongodb__users` AS `u`, UNNEST(`u`.`harness_cluster_details`) AS `d`, UNNEST(`d`.`harness_account_ids`) AS `harness_account_id`
WHERE
  NOT `harness_account_id` IS NULL""",
            read={
                "": """
                SELECT
                  "u"."harness_user_email" AS "harness_user_email",
                  "_q_0"."d"."harness_user_id" AS "harness_user_id",
                  "_q_1"."harness_account_id" AS "harness_account_id"
                FROM
                  "analytics_staging"."stg_mongodb__users" AS "u",
                  UNNEST("u"."harness_cluster_details") AS "_q_0"("d"),
                  UNNEST("_q_0"."d"."harness_account_ids") AS "_q_1"("harness_account_id")
                WHERE
                  NOT "_q_1"."harness_account_id" IS NULL
                """
            },
            pretty=True,
        )

        self.validate_identity("LOG(n, b)")

    def test_user_defined_functions(self):
        self.validate_identity(
            "CREATE TEMPORARY FUNCTION a(x FLOAT64, y FLOAT64) RETURNS FLOAT64 NOT DETERMINISTIC LANGUAGE js AS 'return x*y;'"
        )
        self.validate_identity("CREATE TEMPORARY FUNCTION udf(x ANY TYPE) AS (x)")
        self.validate_identity("CREATE TEMPORARY FUNCTION a(x FLOAT64, y FLOAT64) AS ((x + 4) / y)")
        self.validate_identity(
            "CREATE TABLE FUNCTION a(x INT64) RETURNS TABLE <q STRING, r INT64> AS SELECT s, t"
        )
        self.validate_identity(
            '''CREATE TEMPORARY FUNCTION string_length_0(strings ARRAY<STRING>) RETURNS FLOAT64 LANGUAGE js AS """'use strict'; function string_length(strings) { return _.sum(_.map(strings, ((x) => x.length))); } return string_length(strings);""" OPTIONS (library=['gs://ibis-testing-libraries/lodash.min.js'])''',
            "CREATE TEMPORARY FUNCTION string_length_0(strings ARRAY<STRING>) RETURNS FLOAT64 LANGUAGE js OPTIONS (library=['gs://ibis-testing-libraries/lodash.min.js']) AS '\\'use strict\\'; function string_length(strings) { return _.sum(_.map(strings, ((x) => x.length))); } return string_length(strings);'",
        )

    def test_group_concat(self):
        self.validate_all(
            "SELECT a, GROUP_CONCAT(b) FROM table GROUP BY a",
            write={"bigquery": "SELECT a, STRING_AGG(b) FROM table GROUP BY a"},
        )

    def test_remove_precision_parameterized_types(self):
        self.validate_all(
            "SELECT CAST(1 AS NUMERIC(10, 2))",
            write={
                "bigquery": "SELECT CAST(1 AS NUMERIC)",
            },
        )
        self.validate_all(
            "CREATE TABLE test (a NUMERIC(10, 2))",
            write={
                "bigquery": "CREATE TABLE test (a NUMERIC(10, 2))",
            },
        )
        self.validate_all(
            "SELECT CAST('1' AS STRING(10)) UNION ALL SELECT CAST('2' AS STRING(10))",
            write={
                "bigquery": "SELECT CAST('1' AS STRING) UNION ALL SELECT CAST('2' AS STRING)",
            },
        )
        self.validate_all(
            "SELECT cola FROM (SELECT CAST('1' AS STRING(10)) AS cola UNION ALL SELECT CAST('2' AS STRING(10)) AS cola)",
            write={
                "bigquery": "SELECT cola FROM (SELECT CAST('1' AS STRING) AS cola UNION ALL SELECT CAST('2' AS STRING) AS cola)",
            },
        )
        self.validate_all(
            "INSERT INTO test (cola, colb) VALUES (CAST(7 AS STRING(10)), CAST(14 AS STRING(10)))",
            write={
                "bigquery": "INSERT INTO test (cola, colb) VALUES (CAST(7 AS STRING), CAST(14 AS STRING))",
            },
        )

    def test_models(self):
        self.validate_identity(
            "SELECT * FROM ML.PREDICT(MODEL mydataset.mymodel, (SELECT label, column1, column2 FROM mydataset.mytable))"
        )
        self.validate_identity(
            "SELECT label, predicted_label1, predicted_label AS predicted_label2 FROM ML.PREDICT(MODEL mydataset.mymodel2, (SELECT * EXCEPT (predicted_label), predicted_label AS predicted_label1 FROM ML.PREDICT(MODEL mydataset.mymodel1, TABLE mydataset.mytable)))"
        )
        self.validate_identity(
            "SELECT * FROM ML.PREDICT(MODEL mydataset.mymodel, (SELECT custom_label, column1, column2 FROM mydataset.mytable), STRUCT(0.55 AS threshold))"
        )
        self.validate_identity(
            "SELECT * FROM ML.PREDICT(MODEL `my_project`.my_dataset.my_model, (SELECT * FROM input_data))"
        )
        self.validate_identity(
            "SELECT * FROM ML.PREDICT(MODEL my_dataset.vision_model, (SELECT uri, ML.RESIZE_IMAGE(ML.DECODE_IMAGE(data), 480, 480, FALSE) AS input FROM my_dataset.object_table))"
        )
        self.validate_identity(
            "SELECT * FROM ML.PREDICT(MODEL my_dataset.vision_model, (SELECT uri, ML.CONVERT_COLOR_SPACE(ML.RESIZE_IMAGE(ML.DECODE_IMAGE(data), 224, 280, TRUE), 'YIQ') AS input FROM my_dataset.object_table WHERE content_type = 'image/jpeg'))"
        )
        self.validate_identity(
            "CREATE OR REPLACE MODEL foo OPTIONS (model_type='linear_reg') AS SELECT bla FROM foo WHERE cond"
        )
        self.validate_identity(
            """CREATE OR REPLACE MODEL m
TRANSFORM(
  ML.FEATURE_CROSS(STRUCT(f1, f2)) AS cross_f,
  ML.QUANTILE_BUCKETIZE(f3) OVER () AS buckets,
  label_col
)
OPTIONS (
  model_type='linear_reg',
  input_label_cols=['label_col']
) AS
SELECT
  *
FROM t""",
            pretty=True,
        )
        self.validate_identity(
            """CREATE MODEL project_id.mydataset.mymodel
INPUT(
  f1 INT64,
  f2 FLOAT64,
  f3 STRING,
  f4 ARRAY<INT64>
)
OUTPUT(
  out1 INT64,
  out2 INT64
)
REMOTE WITH CONNECTION myproject.us.test_connection
OPTIONS (
  ENDPOINT='https://us-central1-aiplatform.googleapis.com/v1/projects/myproject/locations/us-central1/endpoints/1234'
)""",
            pretty=True,
        )

    def test_merge(self):
        self.validate_all(
            """
            MERGE dataset.Inventory T
            USING dataset.NewArrivals S ON FALSE
            WHEN NOT MATCHED BY TARGET AND product LIKE '%a%'
            THEN DELETE
            WHEN NOT MATCHED BY SOURCE AND product LIKE '%b%'
            THEN DELETE""",
            write={
                "bigquery": "MERGE INTO dataset.Inventory AS T USING dataset.NewArrivals AS S ON FALSE WHEN NOT MATCHED AND product LIKE '%a%' THEN DELETE WHEN NOT MATCHED BY SOURCE AND product LIKE '%b%' THEN DELETE",
                "snowflake": "MERGE INTO dataset.Inventory AS T USING dataset.NewArrivals AS S ON FALSE WHEN NOT MATCHED AND product LIKE '%a%' THEN DELETE WHEN NOT MATCHED AND product LIKE '%b%' THEN DELETE",
            },
        )

    def test_rename_table(self):
        self.validate_all(
            "ALTER TABLE db.t1 RENAME TO db.t2",
            write={
                "snowflake": "ALTER TABLE db.t1 RENAME TO db.t2",
                "bigquery": "ALTER TABLE db.t1 RENAME TO t2",
            },
        )

    @mock.patch("sqlglot.dialects.bigquery.logger")
    def test_pushdown_cte_column_names(self, logger):
        with self.assertRaises(UnsupportedError):
            transpile(
                "WITH cte(foo) AS (SELECT * FROM tbl) SELECT foo FROM cte",
                read="spark",
                write="bigquery",
                unsupported_level=ErrorLevel.RAISE,
            )

        self.validate_all(
            "WITH cte AS (SELECT 1 AS foo) SELECT foo FROM cte",
            read={"spark": "WITH cte(foo) AS (SELECT 1) SELECT foo FROM cte"},
        )
        self.validate_all(
            "WITH cte AS (SELECT 1 AS foo) SELECT foo FROM cte",
            read={"spark": "WITH cte(foo) AS (SELECT 1 AS bar) SELECT foo FROM cte"},
        )
        self.validate_all(
            "WITH cte AS (SELECT 1 AS bar) SELECT bar FROM cte",
            read={"spark": "WITH cte AS (SELECT 1 AS bar) SELECT bar FROM cte"},
        )
        self.validate_all(
            "WITH cte AS (SELECT 1 AS foo, 2) SELECT foo FROM cte",
            read={"postgres": "WITH cte(foo) AS (SELECT 1, 2) SELECT foo FROM cte"},
        )
        self.validate_all(
            "WITH cte AS (SELECT 1 AS foo UNION ALL SELECT 2) SELECT foo FROM cte",
            read={"postgres": "WITH cte(foo) AS (SELECT 1 UNION ALL SELECT 2) SELECT foo FROM cte"},
        )

    def test_json_object(self):
        self.validate_identity("SELECT JSON_OBJECT() AS json_data")
        self.validate_identity("SELECT JSON_OBJECT('foo', 10, 'bar', TRUE) AS json_data")
        self.validate_identity("SELECT JSON_OBJECT('foo', 10, 'bar', ['a', 'b']) AS json_data")
        self.validate_identity("SELECT JSON_OBJECT('a', 10, 'a', 'foo') AS json_data")
        self.validate_identity(
            "SELECT JSON_OBJECT(['a', 'b'], [10, NULL]) AS json_data",
            "SELECT JSON_OBJECT('a', 10, 'b', NULL) AS json_data",
        )
        self.validate_identity(
            """SELECT JSON_OBJECT(['a', 'b'], [JSON '10', JSON '"foo"']) AS json_data""",
            """SELECT JSON_OBJECT('a', PARSE_JSON('10'), 'b', PARSE_JSON('"foo"')) AS json_data""",
        )
        self.validate_identity(
            "SELECT JSON_OBJECT(['a', 'b'], [STRUCT(10 AS id, 'Red' AS color), STRUCT(20 AS id, 'Blue' AS color)]) AS json_data",
            "SELECT JSON_OBJECT('a', STRUCT(10 AS id, 'Red' AS color), 'b', STRUCT(20 AS id, 'Blue' AS color)) AS json_data",
        )
        self.validate_identity(
            "SELECT JSON_OBJECT(['a', 'b'], [TO_JSON(10), TO_JSON(['foo', 'bar'])]) AS json_data",
            "SELECT JSON_OBJECT('a', TO_JSON(10), 'b', TO_JSON(['foo', 'bar'])) AS json_data",
        )

        with self.assertRaises(ParseError):
            transpile("SELECT JSON_OBJECT('a', 1, 'b') AS json_data", read="bigquery")
