from sqlglot import exp, parse, parse_one from sqlglot.parser import logger as parser_logger from tests.dialects.test_dialect import Validator from sqlglot.errors import ParseError class TestTSQL(Validator): dialect = "tsql" def test_tsql(self): self.validate_identity("ROUND(x, 1, 0)") self.validate_identity("EXEC MyProc @id=7, @name='Lochristi'", check_command_warning=True) # https://learn.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms187879(v=sql.105)?redirectedfrom=MSDN # tsql allows .. which means use the default schema self.validate_identity("SELECT * FROM a..b") self.validate_identity("SELECT TRIM(' test ') AS Result") self.validate_identity("SELECT TRIM('.,! ' FROM ' # test .') AS Result") self.validate_identity("SELECT * FROM t TABLESAMPLE (10 PERCENT)") self.validate_identity("SELECT * FROM t TABLESAMPLE (20 ROWS)") self.validate_identity("SELECT * FROM t TABLESAMPLE (10 PERCENT) REPEATABLE (123)") self.validate_identity("SELECT CONCAT(column1, column2)") self.validate_identity("SELECT TestSpecialChar.Test# FROM TestSpecialChar") self.validate_identity("SELECT TestSpecialChar.Test@ FROM TestSpecialChar") self.validate_identity("SELECT TestSpecialChar.Test$ FROM TestSpecialChar") self.validate_identity("SELECT TestSpecialChar.Test_ FROM TestSpecialChar") self.validate_identity("SELECT TOP (2 + 1) 1") self.validate_identity("SELECT * FROM t WHERE NOT c", "SELECT * FROM t WHERE NOT c <> 0") self.validate_identity("1 AND true", "1 <> 0 AND (1 = 1)") self.validate_identity("CAST(x AS int) OR y", "CAST(x AS INTEGER) <> 0 OR y <> 0") self.validate_identity("TRUNCATE TABLE t1 WITH (PARTITIONS(1, 2 TO 5, 10 TO 20, 84))") self.validate_all( "SELECT IIF(cond <> 0, 'True', 'False')", read={ "spark": "SELECT IF(cond, 'True', 'False')", "sqlite": "SELECT IIF(cond, 'True', 'False')", "tsql": "SELECT IIF(cond <> 0, 'True', 'False')", }, ) self.validate_all( "SELECT TRIM(BOTH 'a' FROM a)", read={ "mysql": "SELECT TRIM(BOTH 'a' FROM a)", }, write={ "mysql": "SELECT TRIM(BOTH 'a' FROM a)", "tsql": "SELECT TRIM(BOTH 'a' FROM a)", }, ) self.validate_all( "SELECT TIMEFROMPARTS(23, 59, 59, 0, 0)", read={ "duckdb": "SELECT MAKE_TIME(23, 59, 59)", "mysql": "SELECT MAKETIME(23, 59, 59)", "postgres": "SELECT MAKE_TIME(23, 59, 59)", "snowflake": "SELECT TIME_FROM_PARTS(23, 59, 59)", }, write={ "tsql": "SELECT TIMEFROMPARTS(23, 59, 59, 0, 0)", }, ) self.validate_all( "SELECT DATETIMEFROMPARTS(2013, 4, 5, 12, 00, 00, 0)", read={ # The nanoseconds are ignored since T-SQL doesn't support that precision "snowflake": "SELECT TIMESTAMP_FROM_PARTS(2013, 4, 5, 12, 00, 00, 987654321)" }, write={ "duckdb": "SELECT MAKE_TIMESTAMP(2013, 4, 5, 12, 00, 00 + (0 / 1000.0))", "snowflake": "SELECT TIMESTAMP_FROM_PARTS(2013, 4, 5, 12, 00, 00, 0 * 1000000)", "tsql": "SELECT DATETIMEFROMPARTS(2013, 4, 5, 12, 00, 00, 0)", }, ) self.validate_all( "SELECT TOP 1 * FROM (SELECT x FROM t1 UNION ALL SELECT x FROM t2) AS _l_0", read={ "": "SELECT x FROM t1 UNION ALL SELECT x FROM t2 LIMIT 1", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT * INTO foo FROM (SELECT c AS c FROM t) AS temp", read={ "duckdb": "CREATE TABLE foo AS WITH t(c) AS (SELECT 1) SELECT c FROM t", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT * INTO foo FROM (SELECT c AS c FROM t) AS temp", write={ "duckdb": "CREATE TABLE foo AS WITH t(c) AS (SELECT 1) SELECT * FROM (SELECT c AS c FROM t) AS temp", "postgres": "WITH t(c) AS (SELECT 1) SELECT * INTO foo FROM (SELECT c AS c FROM t) AS temp", "oracle": "WITH t(c) AS (SELECT 1) SELECT * INTO foo FROM (SELECT c AS c FROM t) temp", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT * INTO TEMP UNLOGGED foo FROM (SELECT c AS c FROM t) AS temp", write={ "duckdb": "CREATE TEMPORARY TABLE foo AS WITH t(c) AS (SELECT 1) SELECT * FROM (SELECT c AS c FROM t) AS temp", "postgres": "WITH t(c) AS (SELECT 1) SELECT * INTO TEMPORARY foo FROM (SELECT c AS c FROM t) AS temp", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT * INTO UNLOGGED foo FROM (SELECT c AS c FROM t) AS temp", write={ "duckdb": "CREATE TABLE foo AS WITH t(c) AS (SELECT 1) SELECT * FROM (SELECT c AS c FROM t) AS temp", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT * INTO UNLOGGED foo FROM (SELECT c AS c FROM t) AS temp", write={ "duckdb": "CREATE TABLE foo AS WITH t(c) AS (SELECT 1) SELECT * FROM (SELECT c AS c FROM t) AS temp", }, ) self.validate_all( "WITH y AS (SELECT 2 AS c) INSERT INTO t SELECT * FROM y", read={ "duckdb": "WITH y AS (SELECT 2 AS c) INSERT INTO t SELECT * FROM y", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) SELECT 1 AS c UNION (SELECT c FROM t)", read={ "duckdb": "SELECT 1 AS c UNION (WITH t(c) AS (SELECT 1) SELECT c FROM t)", }, ) self.validate_all( "WITH t(c) AS (SELECT 1) MERGE INTO x AS z USING (SELECT c AS c FROM t) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b", read={ "postgres": "MERGE INTO x AS z USING (WITH t(c) AS (SELECT 1) SELECT c FROM t) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b", }, ) self.validate_all( "WITH t(n) AS (SELECT 1 AS n UNION ALL SELECT n + 1 AS n FROM t WHERE n < 4) SELECT * FROM (SELECT SUM(n) AS s4 FROM t) AS subq", read={ "duckdb": "SELECT * FROM (WITH RECURSIVE t(n) AS (SELECT 1 AS n UNION ALL SELECT n + 1 AS n FROM t WHERE n < 4) SELECT SUM(n) AS s4 FROM t) AS subq", }, ) self.validate_all( "CREATE TABLE #mytemptable (a INTEGER)", read={ "duckdb": "CREATE TEMPORARY TABLE mytemptable (a INT)", }, write={ "tsql": "CREATE TABLE #mytemptable (a INTEGER)", "snowflake": "CREATE TEMPORARY TABLE mytemptable (a INT)", "duckdb": "CREATE TEMPORARY TABLE mytemptable (a INT)", "oracle": "CREATE GLOBAL TEMPORARY TABLE mytemptable (a NUMBER)", "hive": "CREATE TEMPORARY TABLE mytemptable (a INT)", "spark2": "CREATE TEMPORARY TABLE mytemptable (a INT) USING PARQUET", "spark": "CREATE TEMPORARY TABLE mytemptable (a INT) USING PARQUET", "databricks": "CREATE TEMPORARY TABLE mytemptable (a INT) USING PARQUET", }, ) self.validate_all( "CREATE TABLE #mytemp (a INTEGER, b CHAR(2), c TIME(4), d FLOAT(24))", write={ "spark": "CREATE TEMPORARY TABLE mytemp (a INT, b CHAR(2), c TIMESTAMP, d FLOAT) USING PARQUET", "tsql": "CREATE TABLE #mytemp (a INTEGER, b CHAR(2), c TIME(4), d FLOAT(24))", }, ) self.validate_all( """CREATE TABLE [dbo].[mytable]( [email] [varchar](255) NOT NULL, CONSTRAINT [UN_t_mytable] UNIQUE NONCLUSTERED ( [email] ASC ) )""", write={ "hive": "CREATE TABLE `dbo`.`mytable` (`email` VARCHAR(255) NOT NULL)", "spark2": "CREATE TABLE `dbo`.`mytable` (`email` VARCHAR(255) NOT NULL)", "spark": "CREATE TABLE `dbo`.`mytable` (`email` VARCHAR(255) NOT NULL)", "databricks": "CREATE TABLE `dbo`.`mytable` (`email` VARCHAR(255) NOT NULL)", }, ) self.validate_all( "CREATE TABLE x ( A INTEGER NOT NULL, B INTEGER NULL )", write={ "tsql": "CREATE TABLE x (A INTEGER NOT NULL, B INTEGER NULL)", "hive": "CREATE TABLE x (A INT NOT NULL, B INT)", }, ) self.validate_identity( 'CREATE TABLE x (CONSTRAINT "pk_mytable" UNIQUE NONCLUSTERED (a DESC)) ON b (c)', "CREATE TABLE x (CONSTRAINT [pk_mytable] UNIQUE NONCLUSTERED (a DESC)) ON b (c)", ) self.validate_all( """ CREATE TABLE x( [zip_cd] [varchar](5) NULL NOT FOR REPLICATION, [zip_cd_mkey] [varchar](5) NOT NULL, CONSTRAINT [pk_mytable] PRIMARY KEY CLUSTERED ([zip_cd_mkey] ASC) WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF) ON [INDEX] ) ON [SECONDARY] """, write={ "tsql": "CREATE TABLE x ([zip_cd] VARCHAR(5) NULL NOT FOR REPLICATION, [zip_cd_mkey] VARCHAR(5) NOT NULL, CONSTRAINT [pk_mytable] PRIMARY KEY CLUSTERED ([zip_cd_mkey] ASC) WITH (PAD_INDEX=ON, STATISTICS_NORECOMPUTE=OFF) ON [INDEX]) ON [SECONDARY]", "spark2": "CREATE TABLE x (`zip_cd` VARCHAR(5), `zip_cd_mkey` VARCHAR(5) NOT NULL, CONSTRAINT `pk_mytable` PRIMARY KEY (`zip_cd_mkey`))", }, ) self.validate_identity("CREATE TABLE x (A INTEGER NOT NULL, B INTEGER NULL)") self.validate_all( "CREATE TABLE x ( A INTEGER NOT NULL, B INTEGER NULL )", write={ "hive": "CREATE TABLE x (A INT NOT NULL, B INT)", }, ) self.validate_identity( "CREATE TABLE tbl (a AS (x + 1) PERSISTED, b AS (y + 2), c AS (y / 3) PERSISTED NOT NULL)" ) self.validate_identity( "CREATE TABLE [db].[tbl]([a] [int])", "CREATE TABLE [db].[tbl] ([a] INTEGER)", ) projection = parse_one("SELECT a = 1", read="tsql").selects[0] projection.assert_is(exp.Alias) projection.args["alias"].assert_is(exp.Identifier) self.validate_all( "IF OBJECT_ID('tempdb.dbo.#TempTableName', 'U') IS NOT NULL DROP TABLE #TempTableName", write={ "tsql": "DROP TABLE IF EXISTS #TempTableName", "spark": "DROP TABLE IF EXISTS TempTableName", }, ) self.validate_identity( "MERGE INTO mytable WITH (HOLDLOCK) AS T USING mytable_merge AS S " "ON (T.user_id = S.user_id) WHEN NOT MATCHED THEN INSERT (c1, c2) VALUES (S.c1, S.c2)" ) self.validate_identity("UPDATE STATISTICS x", check_command_warning=True) self.validate_identity("UPDATE x SET y = 1 OUTPUT x.a, x.b INTO @y FROM y") self.validate_identity("UPDATE x SET y = 1 OUTPUT x.a, x.b FROM y") self.validate_identity("INSERT INTO x (y) OUTPUT x.a, x.b INTO l SELECT * FROM z") self.validate_identity("INSERT INTO x (y) OUTPUT x.a, x.b SELECT * FROM z") self.validate_identity("DELETE x OUTPUT x.a FROM z") self.validate_identity("SELECT * FROM t WITH (TABLOCK, INDEX(myindex))") self.validate_identity("SELECT * FROM t WITH (NOWAIT)") self.validate_identity("SELECT CASE WHEN a > 1 THEN b END") self.validate_identity("SELECT * FROM taxi ORDER BY 1 OFFSET 0 ROWS FETCH NEXT 3 ROWS ONLY") self.validate_identity("END") self.validate_identity("@x") self.validate_identity("#x") self.validate_identity("PRINT @TestVariable", check_command_warning=True) self.validate_identity("SELECT Employee_ID, Department_ID FROM @MyTableVar") self.validate_identity("INSERT INTO @TestTable VALUES (1, 'Value1', 12, 20)") self.validate_identity("SELECT * FROM #foo") self.validate_identity("SELECT * FROM ##foo") self.validate_identity("SELECT a = 1", "SELECT 1 AS a") self.validate_identity( "DECLARE @TestVariable AS VARCHAR(100)='Save Our Planet'", check_command_warning=True ) self.validate_identity( "SELECT a = 1 UNION ALL SELECT a = b", "SELECT 1 AS a UNION ALL SELECT b AS a" ) self.validate_identity( "SELECT x FROM @MyTableVar AS m JOIN Employee ON m.EmployeeID = Employee.EmployeeID" ) self.validate_identity( "SELECT DISTINCT DepartmentName, PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY BaseRate) OVER (PARTITION BY DepartmentName) AS MedianCont FROM dbo.DimEmployee" ) self.validate_identity( 'SELECT "x"."y" FROM foo', "SELECT [x].[y] FROM foo", ) self.validate_all( "SELECT CAST([a].[b] AS SMALLINT) FROM foo", write={ "tsql": "SELECT CAST([a].[b] AS SMALLINT) FROM foo", "spark": "SELECT CAST(`a`.`b` AS SMALLINT) FROM foo", }, ) self.validate_all( "CONVERT(INT, CONVERT(NUMERIC, '444.75'))", write={ "mysql": "CAST(CAST('444.75' AS DECIMAL) AS SIGNED)", "tsql": "CONVERT(INTEGER, CONVERT(NUMERIC, '444.75'))", }, ) self.validate_all( "STRING_AGG(x, y) WITHIN GROUP (ORDER BY z DESC)", write={ "tsql": "STRING_AGG(x, y) WITHIN GROUP (ORDER BY z DESC)", "mysql": "GROUP_CONCAT(x ORDER BY z DESC SEPARATOR y)", "sqlite": "GROUP_CONCAT(x, y)", "postgres": "STRING_AGG(x, y ORDER BY z DESC NULLS LAST)", }, ) self.validate_all( "STRING_AGG(x, '|') WITHIN GROUP (ORDER BY z ASC)", write={ "tsql": "STRING_AGG(x, '|') WITHIN GROUP (ORDER BY z ASC)", "mysql": "GROUP_CONCAT(x ORDER BY z ASC SEPARATOR '|')", "sqlite": "GROUP_CONCAT(x, '|')", "postgres": "STRING_AGG(x, '|' ORDER BY z ASC NULLS FIRST)", }, ) self.validate_all( "STRING_AGG(x, '|')", write={ "tsql": "STRING_AGG(x, '|')", "mysql": "GROUP_CONCAT(x SEPARATOR '|')", "sqlite": "GROUP_CONCAT(x, '|')", "postgres": "STRING_AGG(x, '|')", }, ) self.validate_all( "HASHBYTES('SHA1', x)", read={ "snowflake": "SHA1(x)", "spark": "SHA(x)", }, write={ "snowflake": "SHA1(x)", "spark": "SHA(x)", "tsql": "HASHBYTES('SHA1', x)", }, ) self.validate_all( "HASHBYTES('SHA2_256', x)", read={ "spark": "SHA2(x, 256)", }, write={ "tsql": "HASHBYTES('SHA2_256', x)", "spark": "SHA2(x, 256)", }, ) self.validate_all( "HASHBYTES('SHA2_512', x)", read={ "spark": "SHA2(x, 512)", }, write={ "tsql": "HASHBYTES('SHA2_512', x)", "spark": "SHA2(x, 512)", }, ) self.validate_all( "HASHBYTES('MD5', 'x')", read={ "spark": "MD5('x')", }, write={ "tsql": "HASHBYTES('MD5', 'x')", "spark": "MD5('x')", }, ) self.validate_identity("HASHBYTES('MD2', 'x')") self.validate_identity("LOG(n, b)") def test_option(self): possible_options = [ "HASH GROUP", "ORDER GROUP", "CONCAT UNION", "HASH UNION", "MERGE UNION", "LOOP JOIN", "MERGE JOIN", "HASH JOIN", "DISABLE_OPTIMIZED_PLAN_FORCING", "EXPAND VIEWS", "FAST 15", "FORCE ORDER", "FORCE EXTERNALPUSHDOWN", "DISABLE EXTERNALPUSHDOWN", "FORCE SCALEOUTEXECUTION", "DISABLE SCALEOUTEXECUTION", "IGNORE_NONCLUSTERED_COLUMNSTORE_INDEX", "KEEP PLAN", "KEEPFIXED PLAN", "MAX_GRANT_PERCENT = 5", "MIN_GRANT_PERCENT = 10", "MAXDOP 13", "MAXRECURSION 8", "NO_PERFORMANCE_SPOOL", "OPTIMIZE FOR UNKNOWN", "PARAMETERIZATION SIMPLE", "PARAMETERIZATION FORCED", "QUERYTRACEON 99", "RECOMPILE", "ROBUST PLAN", "USE PLAN N''", "LABEL = 'MyLabel'", ] possible_statements = [ # These should be un-commented once support for the OPTION clause is added for DELETE, MERGE and UPDATE # "DELETE FROM Table1", # "MERGE INTO Locations AS T USING locations_stage AS S ON T.LocationID = S.LocationID WHEN MATCHED THEN UPDATE SET LocationName = S.LocationName", # "UPDATE Customers SET ContactName = 'Alfred Schmidt', City = 'Frankfurt' WHERE CustomerID = 1", "SELECT * FROM Table1", "SELECT * FROM Table1 WHERE id = 2", ] for statement in possible_statements: for option in possible_options: query = f"{statement} OPTION({option})" result = self.validate_identity(query) options = result.args.get("options") self.assertIsInstance(options, list, f"When parsing query {query}") is_query_options = map(lambda o: isinstance(o, exp.QueryOption), options) self.assertTrue(all(is_query_options), f"When parsing query {query}") self.validate_identity( f"{statement} OPTION(RECOMPILE, USE PLAN N'', MAX_GRANT_PERCENT = 5)" ) raising_queries = [ # Missing parentheses "SELECT * FROM Table1 OPTION HASH GROUP", # Must be followed by 'PLAN" "SELECT * FROM Table1 OPTION(KEEPFIXED)", # Missing commas "SELECT * FROM Table1 OPTION(HASH GROUP HASH GROUP)", ] for query in raising_queries: with self.assertRaises(ParseError, msg=f"When running '{query}'"): self.parse_one(query) def test_types(self): self.validate_identity("CAST(x AS XML)") self.validate_identity("CAST(x AS UNIQUEIDENTIFIER)") self.validate_identity("CAST(x AS MONEY)") self.validate_identity("CAST(x AS SMALLMONEY)") self.validate_identity("CAST(x AS ROWVERSION)") self.validate_identity("CAST(x AS IMAGE)") self.validate_identity("CAST(x AS SQL_VARIANT)") self.validate_identity("CAST(x AS BIT)") self.validate_all( "CAST(x AS DATETIME2)", read={ "": "CAST(x AS DATETIME)", }, write={ "mysql": "CAST(x AS DATETIME)", "tsql": "CAST(x AS DATETIME2)", }, ) self.validate_all( "CAST(x AS DATETIME2(6))", write={ "hive": "CAST(x AS TIMESTAMP)", }, ) def test__types_ints(self): self.validate_all( "CAST(X AS INT)", write={ "hive": "CAST(X AS INT)", "spark2": "CAST(X AS INT)", "spark": "CAST(X AS INT)", "tsql": "CAST(X AS INTEGER)", }, ) self.validate_all( "CAST(X AS BIGINT)", write={ "hive": "CAST(X AS BIGINT)", "spark2": "CAST(X AS BIGINT)", "spark": "CAST(X AS BIGINT)", "tsql": "CAST(X AS BIGINT)", }, ) self.validate_all( "CAST(X AS SMALLINT)", write={ "hive": "CAST(X AS SMALLINT)", "spark2": "CAST(X AS SMALLINT)", "spark": "CAST(X AS SMALLINT)", "tsql": "CAST(X AS SMALLINT)", }, ) self.validate_all( "CAST(X AS TINYINT)", write={ "hive": "CAST(X AS TINYINT)", "spark2": "CAST(X AS TINYINT)", "spark": "CAST(X AS TINYINT)", "tsql": "CAST(X AS TINYINT)", }, ) def test_types_decimals(self): self.validate_all( "CAST(x as FLOAT)", write={ "spark": "CAST(x AS FLOAT)", "tsql": "CAST(x AS FLOAT)", }, ) self.validate_all( "CAST(x as FLOAT(32))", write={"tsql": "CAST(x AS FLOAT(32))", "hive": "CAST(x AS FLOAT)"}, ) self.validate_all( "CAST(x as FLOAT(64))", write={"tsql": "CAST(x AS FLOAT(64))", "spark": "CAST(x AS DOUBLE)"}, ) self.validate_all( "CAST(x as FLOAT(6))", write={"tsql": "CAST(x AS FLOAT(6))", "hive": "CAST(x AS FLOAT)"} ) self.validate_all( "CAST(x as FLOAT(36))", write={"tsql": "CAST(x AS FLOAT(36))", "hive": "CAST(x AS DOUBLE)"}, ) self.validate_all( "CAST(x as FLOAT(99))", write={"tsql": "CAST(x AS FLOAT(99))", "hive": "CAST(x AS DOUBLE)"}, ) self.validate_all( "CAST(x as DOUBLE)", write={ "spark": "CAST(x AS DOUBLE)", "tsql": "CAST(x AS FLOAT)", }, ) self.validate_all( "CAST(x as DECIMAL(15, 4))", write={ "spark": "CAST(x AS DECIMAL(15, 4))", "tsql": "CAST(x AS NUMERIC(15, 4))", }, ) self.validate_all( "CAST(x as NUMERIC(13,3))", write={ "spark": "CAST(x AS DECIMAL(13, 3))", "tsql": "CAST(x AS NUMERIC(13, 3))", }, ) self.validate_all( "CAST(x as MONEY)", write={ "spark": "CAST(x AS DECIMAL(15, 4))", "tsql": "CAST(x AS MONEY)", }, ) self.validate_all( "CAST(x as SMALLMONEY)", write={ "spark": "CAST(x AS DECIMAL(6, 4))", "tsql": "CAST(x AS SMALLMONEY)", }, ) self.validate_all( "CAST(x as REAL)", write={ "spark": "CAST(x AS FLOAT)", "tsql": "CAST(x AS FLOAT)", }, ) def test_types_string(self): self.validate_all( "CAST(x as CHAR(1))", write={ "spark": "CAST(x AS CHAR(1))", "tsql": "CAST(x AS CHAR(1))", }, ) self.validate_all( "CAST(x as VARCHAR(2))", write={ "spark": "CAST(x AS VARCHAR(2))", "tsql": "CAST(x AS VARCHAR(2))", }, ) self.validate_all( "CAST(x as NCHAR(1))", write={ "spark": "CAST(x AS CHAR(1))", "tsql": "CAST(x AS NCHAR(1))", }, ) self.validate_all( "CAST(x as NVARCHAR(2))", write={ "spark": "CAST(x AS VARCHAR(2))", "tsql": "CAST(x AS NVARCHAR(2))", }, ) self.validate_all( "CAST(x as UNIQUEIDENTIFIER)", write={ "spark": "CAST(x AS STRING)", "tsql": "CAST(x AS UNIQUEIDENTIFIER)", }, ) def test_types_date(self): self.validate_all( "CAST(x as DATE)", write={ "spark": "CAST(x AS DATE)", "tsql": "CAST(x AS DATE)", }, ) self.validate_all( "CAST(x as DATE)", write={ "spark": "CAST(x AS DATE)", "tsql": "CAST(x AS DATE)", }, ) self.validate_all( "CAST(x as TIME(4))", write={ "spark": "CAST(x AS TIMESTAMP)", "tsql": "CAST(x AS TIME(4))", }, ) self.validate_all( "CAST(x as DATETIME2)", write={ "spark": "CAST(x AS TIMESTAMP)", "tsql": "CAST(x AS DATETIME2)", }, ) self.validate_all( "CAST(x as DATETIMEOFFSET)", write={ "spark": "CAST(x AS TIMESTAMP)", "tsql": "CAST(x AS DATETIMEOFFSET)", }, ) self.validate_all( "CAST(x as SMALLDATETIME)", write={ "spark": "CAST(x AS TIMESTAMP)", "tsql": "CAST(x AS DATETIME2)", }, ) def test_types_bin(self): self.validate_all( "CAST(x as BIT)", write={ "spark": "CAST(x AS BOOLEAN)", "tsql": "CAST(x AS BIT)", }, ) self.validate_all( "CAST(x as VARBINARY)", write={ "spark": "CAST(x AS BINARY)", "tsql": "CAST(x AS VARBINARY)", }, ) self.validate_all( "CAST(x AS BOOLEAN)", write={"tsql": "CAST(x AS BIT)"}, ) self.validate_all("a = TRUE", write={"tsql": "a = 1"}) self.validate_all("a != FALSE", write={"tsql": "a <> 0"}) self.validate_all("a IS TRUE", write={"tsql": "a = 1"}) self.validate_all("a IS NOT FALSE", write={"tsql": "NOT a = 0"}) self.validate_all( "CASE WHEN a IN (TRUE) THEN 'y' ELSE 'n' END", write={"tsql": "CASE WHEN a IN (1) THEN 'y' ELSE 'n' END"}, ) self.validate_all( "CASE WHEN a NOT IN (FALSE) THEN 'y' ELSE 'n' END", write={"tsql": "CASE WHEN NOT a IN (0) THEN 'y' ELSE 'n' END"}, ) self.validate_all("SELECT TRUE, FALSE", write={"tsql": "SELECT 1, 0"}) self.validate_all("SELECT TRUE AS a, FALSE AS b", write={"tsql": "SELECT 1 AS a, 0 AS b"}) self.validate_all( "SELECT 1 FROM a WHERE TRUE", write={"tsql": "SELECT 1 FROM a WHERE (1 = 1)"} ) self.validate_all( "CASE WHEN TRUE THEN 'y' WHEN FALSE THEN 'n' ELSE NULL END", write={"tsql": "CASE WHEN (1 = 1) THEN 'y' WHEN (1 = 0) THEN 'n' ELSE NULL END"}, ) def test_ddl(self): expression = parse_one("ALTER TABLE dbo.DocExe DROP CONSTRAINT FK_Column_B", dialect="tsql") self.assertIsInstance(expression, exp.AlterTable) self.assertIsInstance(expression.args["actions"][0], exp.Drop) self.assertEqual( expression.sql(dialect="tsql"), "ALTER TABLE dbo.DocExe DROP CONSTRAINT FK_Column_B" ) for clusterd_keyword in ("CLUSTERED", "NONCLUSTERED"): self.validate_identity( 'CREATE TABLE "dbo"."benchmark" (' '"name" CHAR(7) NOT NULL, ' '"internal_id" VARCHAR(10) NOT NULL, ' f'UNIQUE {clusterd_keyword} ("internal_id" ASC))', "CREATE TABLE [dbo].[benchmark] (" "[name] CHAR(7) NOT NULL, " "[internal_id] VARCHAR(10) NOT NULL, " f"UNIQUE {clusterd_keyword} ([internal_id] ASC))", ) self.validate_identity( "CREATE PROCEDURE foo AS BEGIN DELETE FROM bla WHERE foo < CURRENT_TIMESTAMP - 7 END", "CREATE PROCEDURE foo AS BEGIN DELETE FROM bla WHERE foo < GETDATE() - 7 END", ) self.validate_all( "CREATE TABLE tbl (id INTEGER IDENTITY PRIMARY KEY)", read={ "mysql": "CREATE TABLE tbl (id INT AUTO_INCREMENT PRIMARY KEY)", "tsql": "CREATE TABLE tbl (id INTEGER IDENTITY PRIMARY KEY)", }, ) self.validate_all( "CREATE TABLE tbl (id INTEGER NOT NULL IDENTITY(10, 1) PRIMARY KEY)", read={ "postgres": "CREATE TABLE tbl (id INT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 10) PRIMARY KEY)", "tsql": "CREATE TABLE tbl (id INTEGER NOT NULL IDENTITY(10, 1) PRIMARY KEY)", }, write={ "databricks": "CREATE TABLE tbl (id BIGINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 1) PRIMARY KEY)", }, ) self.validate_all( "SELECT * INTO foo.bar.baz FROM (SELECT * FROM a.b.c) AS temp", read={ "": "CREATE TABLE foo.bar.baz AS SELECT * FROM a.b.c", "duckdb": "CREATE TABLE foo.bar.baz AS (SELECT * FROM a.b.c)", }, ) self.validate_all( "IF NOT EXISTS (SELECT * FROM sys.indexes WHERE object_id = object_id('db.tbl') AND name = 'idx') EXEC('CREATE INDEX idx ON db.tbl')", read={ "": "CREATE INDEX IF NOT EXISTS idx ON db.tbl", }, ) self.validate_all( "IF NOT EXISTS (SELECT * FROM information_schema.schemata WHERE schema_name = 'foo') EXEC('CREATE SCHEMA foo')", read={ "": "CREATE SCHEMA IF NOT EXISTS foo", }, ) self.validate_all( "IF NOT EXISTS (SELECT * FROM information_schema.tables WHERE table_name = 'baz' AND table_schema = 'bar' AND table_catalog = 'foo') EXEC('CREATE TABLE foo.bar.baz (a INTEGER)')", read={ "": "CREATE TABLE IF NOT EXISTS foo.bar.baz (a INTEGER)", }, ) self.validate_all( "IF NOT EXISTS (SELECT * FROM information_schema.tables WHERE table_name = 'baz' AND table_schema = 'bar' AND table_catalog = 'foo') EXEC('SELECT * INTO foo.bar.baz FROM (SELECT ''2020'' AS z FROM a.b.c) AS temp')", read={ "": "CREATE TABLE IF NOT EXISTS foo.bar.baz AS SELECT '2020' AS z FROM a.b.c", }, ) self.validate_all( "CREATE OR ALTER VIEW a.b AS SELECT 1", read={ "": "CREATE OR REPLACE VIEW a.b AS SELECT 1", }, write={ "tsql": "CREATE OR ALTER VIEW a.b AS SELECT 1", }, ) self.validate_all( "ALTER TABLE a ADD b INTEGER, c INTEGER", read={ "": "ALTER TABLE a ADD COLUMN b INT, ADD COLUMN c INT", }, write={ "": "ALTER TABLE a ADD COLUMN b INT, ADD COLUMN c INT", "tsql": "ALTER TABLE a ADD b INTEGER, c INTEGER", }, ) self.validate_all( "CREATE TABLE #mytemp (a INTEGER, b CHAR(2), c TIME(4), d FLOAT(24))", write={ "spark": "CREATE TEMPORARY TABLE mytemp (a INT, b CHAR(2), c TIMESTAMP, d FLOAT) USING PARQUET", "tsql": "CREATE TABLE #mytemp (a INTEGER, b CHAR(2), c TIME(4), d FLOAT(24))", }, ) def test_insert_cte(self): self.validate_all( "INSERT INTO foo.bar WITH cte AS (SELECT 1 AS one) SELECT * FROM cte", write={"tsql": "WITH cte AS (SELECT 1 AS one) INSERT INTO foo.bar SELECT * FROM cte"}, ) def test_transaction(self): self.validate_identity("BEGIN TRANSACTION") self.validate_all("BEGIN TRAN", write={"tsql": "BEGIN TRANSACTION"}) self.validate_identity("BEGIN TRANSACTION transaction_name") self.validate_identity("BEGIN TRANSACTION @tran_name_variable") self.validate_identity("BEGIN TRANSACTION transaction_name WITH MARK 'description'") def test_commit(self): self.validate_all("COMMIT", write={"tsql": "COMMIT TRANSACTION"}) self.validate_all("COMMIT TRAN", write={"tsql": "COMMIT TRANSACTION"}) self.validate_identity("COMMIT TRANSACTION") self.validate_identity("COMMIT TRANSACTION transaction_name") self.validate_identity("COMMIT TRANSACTION @tran_name_variable") self.validate_identity( "COMMIT TRANSACTION @tran_name_variable WITH (DELAYED_DURABILITY = ON)" ) self.validate_identity( "COMMIT TRANSACTION transaction_name WITH (DELAYED_DURABILITY = OFF)" ) def test_rollback(self): self.validate_all("ROLLBACK", write={"tsql": "ROLLBACK TRANSACTION"}) self.validate_all("ROLLBACK TRAN", write={"tsql": "ROLLBACK TRANSACTION"}) self.validate_identity("ROLLBACK TRANSACTION") self.validate_identity("ROLLBACK TRANSACTION transaction_name") self.validate_identity("ROLLBACK TRANSACTION @tran_name_variable") def test_udf(self): self.validate_identity( "DECLARE @DWH_DateCreated DATETIME = CONVERT(DATETIME, getdate(), 104)", check_command_warning=True, ) self.validate_identity( "CREATE PROCEDURE foo @a INTEGER, @b INTEGER AS SELECT @a = SUM(bla) FROM baz AS bar" ) self.validate_identity( "CREATE PROC foo @ID INTEGER, @AGE INTEGER AS SELECT DB_NAME(@ID) AS ThatDB" ) self.validate_identity("CREATE PROC foo AS SELECT BAR() AS baz") self.validate_identity("CREATE PROCEDURE foo AS SELECT BAR() AS baz") self.validate_identity("CREATE FUNCTION foo(@bar INTEGER) RETURNS TABLE AS RETURN SELECT 1") self.validate_identity("CREATE FUNCTION dbo.ISOweek(@DATE DATETIME2) RETURNS INTEGER") # The following two cases don't necessarily correspond to valid TSQL, but they are used to verify # that the syntax RETURNS @return_variable TABLE ... is parsed correctly. # # See also "Transact-SQL Multi-Statement Table-Valued Function Syntax" # https://learn.microsoft.com/en-us/sql/t-sql/statements/create-function-transact-sql?view=sql-server-ver16 self.validate_identity( "CREATE FUNCTION foo(@bar INTEGER) RETURNS @foo TABLE (x INTEGER, y NUMERIC) AS RETURN SELECT 1" ) self.validate_identity( "CREATE FUNCTION foo() RETURNS @contacts TABLE (first_name VARCHAR(50), phone VARCHAR(25)) AS SELECT @fname, @phone" ) self.validate_all( """ CREATE FUNCTION udfProductInYear ( @model_year INT ) RETURNS TABLE AS RETURN SELECT product_name, model_year, list_price FROM production.products WHERE model_year = @model_year """, write={ "tsql": """CREATE FUNCTION udfProductInYear( @model_year INTEGER ) RETURNS TABLE AS RETURN SELECT product_name, model_year, list_price FROM production.products WHERE model_year = @model_year""", }, pretty=True, ) def test_procedure_keywords(self): self.validate_identity("BEGIN") self.validate_identity("END") self.validate_identity("SET XACT_ABORT ON") def test_fullproc(self): sql = """ CREATE procedure [TRANSF].[SP_Merge_Sales_Real] @Loadid INTEGER ,@NumberOfRows INTEGER AS BEGIN SET XACT_ABORT ON; DECLARE @DWH_DateCreated DATETIME = CONVERT(DATETIME, getdate(), 104); DECLARE @DWH_DateModified DATETIME = CONVERT(DATETIME, getdate(), 104); DECLARE @DWH_IdUserCreated INTEGER = SUSER_ID (SYSTEM_USER); DECLARE @DWH_IdUserModified INTEGER = SUSER_ID (SYSTEM_USER); DECLARE @SalesAmountBefore float; SELECT @SalesAmountBefore=SUM(SalesAmount) FROM TRANSF.[Pre_Merge_Sales_Real] S; END """ expected_sqls = [ "CREATE PROCEDURE [TRANSF].[SP_Merge_Sales_Real] @Loadid INTEGER, @NumberOfRows INTEGER AS BEGIN SET XACT_ABORT ON", "DECLARE @DWH_DateCreated DATETIME = CONVERT(DATETIME, getdate(), 104)", "DECLARE @DWH_DateModified DATETIME = CONVERT(DATETIME, getdate(), 104)", "DECLARE @DWH_IdUserCreated INTEGER = SUSER_ID (SYSTEM_USER)", "DECLARE @DWH_IdUserModified INTEGER = SUSER_ID (SYSTEM_USER)", "DECLARE @SalesAmountBefore float", "SELECT @SalesAmountBefore = SUM(SalesAmount) FROM TRANSF.[Pre_Merge_Sales_Real] AS S", "END", ] with self.assertLogs(parser_logger): for expr, expected_sql in zip(parse(sql, read="tsql"), expected_sqls): self.assertEqual(expr.sql(dialect="tsql"), expected_sql) sql = """ CREATE PROC [dbo].[transform_proc] AS DECLARE @CurrentDate VARCHAR(20); SET @CurrentDate = CONVERT(VARCHAR(20), GETDATE(), 120); CREATE TABLE [target_schema].[target_table] (a INTEGER) WITH (DISTRIBUTION = REPLICATE, HEAP); """ expected_sqls = [ "CREATE PROC [dbo].[transform_proc] AS DECLARE @CurrentDate VARCHAR(20)", "SET @CurrentDate = CONVERT(VARCHAR(20), GETDATE(), 120)", "CREATE TABLE [target_schema].[target_table] (a INTEGER) WITH (DISTRIBUTION=REPLICATE, HEAP)", ] with self.assertLogs(parser_logger): for expr, expected_sql in zip(parse(sql, read="tsql"), expected_sqls): self.assertEqual(expr.sql(dialect="tsql"), expected_sql) def test_charindex(self): self.validate_identity( "SELECT CAST(SUBSTRING('ABCD~1234', CHARINDEX('~', 'ABCD~1234') + 1, LEN('ABCD~1234')) AS BIGINT)" ) self.validate_all( "CHARINDEX(x, y, 9)", read={ "spark": "LOCATE(x, y, 9)", }, write={ "spark": "LOCATE(x, y, 9)", "tsql": "CHARINDEX(x, y, 9)", }, ) self.validate_all( "CHARINDEX(x, y)", read={ "spark": "LOCATE(x, y)", }, write={ "spark": "LOCATE(x, y)", "tsql": "CHARINDEX(x, y)", }, ) self.validate_all( "CHARINDEX('sub', 'testsubstring', 3)", read={ "spark": "LOCATE('sub', 'testsubstring', 3)", }, write={ "spark": "LOCATE('sub', 'testsubstring', 3)", "tsql": "CHARINDEX('sub', 'testsubstring', 3)", }, ) self.validate_all( "CHARINDEX('sub', 'testsubstring')", read={ "spark": "LOCATE('sub', 'testsubstring')", }, write={ "spark": "LOCATE('sub', 'testsubstring')", "tsql": "CHARINDEX('sub', 'testsubstring')", }, ) def test_len(self): self.validate_all( "LEN(x)", read={"": "LENGTH(x)"}, write={"spark": "LENGTH(CAST(x AS STRING))"} ) self.validate_all( "RIGHT(x, 1)", read={"": "RIGHT(CAST(x AS STRING), 1)"}, write={"spark": "RIGHT(CAST(x AS STRING), 1)"}, ) self.validate_all( "LEFT(x, 1)", read={"": "LEFT(CAST(x AS STRING), 1)"}, write={"spark": "LEFT(CAST(x AS STRING), 1)"}, ) self.validate_all("LEN(1)", write={"tsql": "LEN(1)", "spark": "LENGTH(CAST(1 AS STRING))"}) self.validate_all("LEN('x')", write={"tsql": "LEN('x')", "spark": "LENGTH('x')"}) def test_replicate(self): self.validate_all("REPLICATE('x', 2)", write={"spark": "REPEAT('x', 2)"}) def test_isnull(self): self.validate_all("ISNULL(x, y)", write={"spark": "COALESCE(x, y)"}) def test_json(self): self.validate_all( "JSON_QUERY(r.JSON, '$.Attr_INT')", write={ "spark": "GET_JSON_OBJECT(r.JSON, '$.Attr_INT')", "tsql": "ISNULL(JSON_QUERY(r.JSON, '$.Attr_INT'), JSON_VALUE(r.JSON, '$.Attr_INT'))", }, ) self.validate_all( "JSON_VALUE(r.JSON, '$.Attr_INT')", write={ "spark": "GET_JSON_OBJECT(r.JSON, '$.Attr_INT')", "tsql": "ISNULL(JSON_QUERY(r.JSON, '$.Attr_INT'), JSON_VALUE(r.JSON, '$.Attr_INT'))", }, ) def test_datefromparts(self): self.validate_all( "SELECT DATEFROMPARTS('2020', 10, 01)", write={"spark": "SELECT MAKE_DATE('2020', 10, 01)"}, ) def test_datename(self): self.validate_all( "SELECT DATENAME(mm, '1970-01-01')", write={ "spark": "SELECT DATE_FORMAT(CAST('1970-01-01' AS TIMESTAMP), 'MMMM')", "tsql": "SELECT FORMAT(CAST('1970-01-01' AS DATETIME2), 'MMMM')", }, ) self.validate_all( "SELECT DATENAME(dw, '1970-01-01')", write={ "spark": "SELECT DATE_FORMAT(CAST('1970-01-01' AS TIMESTAMP), 'EEEE')", "tsql": "SELECT FORMAT(CAST('1970-01-01' AS DATETIME2), 'dddd')", }, ) def test_datepart(self): self.validate_identity( "DATEPART(QUARTER, x)", "DATEPART(QUARTER, CAST(x AS DATETIME2))", ) self.validate_identity( "DATEPART(YEAR, x)", "FORMAT(CAST(x AS DATETIME2), 'yyyy')", ) self.validate_identity( "DATEPART(HOUR, date_and_time)", "DATEPART(HOUR, CAST(date_and_time AS DATETIME2))", ) self.validate_identity( "DATEPART(WEEKDAY, date_and_time)", "DATEPART(DW, CAST(date_and_time AS DATETIME2))", ) self.validate_identity( "DATEPART(DW, date_and_time)", "DATEPART(DW, CAST(date_and_time AS DATETIME2))", ) self.validate_all( "SELECT DATEPART(month,'1970-01-01')", write={ "postgres": "SELECT TO_CHAR(CAST('1970-01-01' AS TIMESTAMP), 'MM')", "spark": "SELECT DATE_FORMAT(CAST('1970-01-01' AS TIMESTAMP), 'MM')", "tsql": "SELECT FORMAT(CAST('1970-01-01' AS DATETIME2), 'MM')", }, ) self.validate_all( "SELECT DATEPART(YEAR, CAST('2017-01-01' AS DATE))", read={ "postgres": "SELECT DATE_PART('YEAR', '2017-01-01'::DATE)", }, write={ "postgres": "SELECT TO_CHAR(CAST(CAST('2017-01-01' AS DATE) AS TIMESTAMP), 'YYYY')", "spark": "SELECT DATE_FORMAT(CAST(CAST('2017-01-01' AS DATE) AS TIMESTAMP), 'yyyy')", "tsql": "SELECT FORMAT(CAST(CAST('2017-01-01' AS DATE) AS DATETIME2), 'yyyy')", }, ) self.validate_all( "SELECT DATEPART(month, CAST('2017-03-01' AS DATE))", read={ "postgres": "SELECT DATE_PART('month', '2017-03-01'::DATE)", }, write={ "postgres": "SELECT TO_CHAR(CAST(CAST('2017-03-01' AS DATE) AS TIMESTAMP), 'MM')", "spark": "SELECT DATE_FORMAT(CAST(CAST('2017-03-01' AS DATE) AS TIMESTAMP), 'MM')", "tsql": "SELECT FORMAT(CAST(CAST('2017-03-01' AS DATE) AS DATETIME2), 'MM')", }, ) self.validate_all( "SELECT DATEPART(day, CAST('2017-01-02' AS DATE))", read={ "postgres": "SELECT DATE_PART('day', '2017-01-02'::DATE)", }, write={ "postgres": "SELECT TO_CHAR(CAST(CAST('2017-01-02' AS DATE) AS TIMESTAMP), 'DD')", "spark": "SELECT DATE_FORMAT(CAST(CAST('2017-01-02' AS DATE) AS TIMESTAMP), 'dd')", "tsql": "SELECT FORMAT(CAST(CAST('2017-01-02' AS DATE) AS DATETIME2), 'dd')", }, ) def test_convert(self): self.validate_all( "CONVERT(NVARCHAR(200), x)", write={ "spark": "CAST(x AS VARCHAR(200))", "tsql": "CONVERT(NVARCHAR(200), x)", }, ) self.validate_all( "CONVERT(NVARCHAR, x)", write={ "spark": "CAST(x AS VARCHAR(30))", "tsql": "CONVERT(NVARCHAR, x)", }, ) self.validate_all( "CONVERT(NVARCHAR(MAX), x)", write={ "spark": "CAST(x AS STRING)", "tsql": "CONVERT(NVARCHAR(MAX), x)", }, ) self.validate_all( "CONVERT(VARCHAR(200), x)", write={ "spark": "CAST(x AS VARCHAR(200))", "tsql": "CONVERT(VARCHAR(200), x)", }, ) self.validate_all( "CONVERT(VARCHAR, x)", write={ "spark": "CAST(x AS VARCHAR(30))", "tsql": "CONVERT(VARCHAR, x)", }, ) self.validate_all( "CONVERT(VARCHAR(MAX), x)", write={ "spark": "CAST(x AS STRING)", "tsql": "CONVERT(VARCHAR(MAX), x)", }, ) self.validate_all( "CONVERT(CHAR(40), x)", write={ "spark": "CAST(x AS CHAR(40))", "tsql": "CONVERT(CHAR(40), x)", }, ) self.validate_all( "CONVERT(CHAR, x)", write={ "spark": "CAST(x AS CHAR(30))", "tsql": "CONVERT(CHAR, x)", }, ) self.validate_all( "CONVERT(NCHAR(40), x)", write={ "spark": "CAST(x AS CHAR(40))", "tsql": "CONVERT(NCHAR(40), x)", }, ) self.validate_all( "CONVERT(NCHAR, x)", write={ "spark": "CAST(x AS CHAR(30))", "tsql": "CONVERT(NCHAR, x)", }, ) self.validate_all( "CONVERT(VARCHAR, x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS VARCHAR(30))", "tsql": "CONVERT(VARCHAR, x, 121)", }, ) self.validate_all( "CONVERT(VARCHAR(40), x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS VARCHAR(40))", "tsql": "CONVERT(VARCHAR(40), x, 121)", }, ) self.validate_all( "CONVERT(VARCHAR(MAX), x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS STRING)", "tsql": "CONVERT(VARCHAR(MAX), x, 121)", }, ) self.validate_all( "CONVERT(NVARCHAR, x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS VARCHAR(30))", "tsql": "CONVERT(NVARCHAR, x, 121)", }, ) self.validate_all( "CONVERT(NVARCHAR(40), x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS VARCHAR(40))", "tsql": "CONVERT(NVARCHAR(40), x, 121)", }, ) self.validate_all( "CONVERT(NVARCHAR(MAX), x, 121)", write={ "spark": "CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS STRING)", "tsql": "CONVERT(NVARCHAR(MAX), x, 121)", }, ) self.validate_all( "CONVERT(DATE, x, 121)", write={ "spark": "TO_DATE(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS')", "tsql": "CONVERT(DATE, x, 121)", }, ) self.validate_all( "CONVERT(DATETIME, x, 121)", write={ "spark": "TO_TIMESTAMP(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS')", "tsql": "CONVERT(DATETIME2, x, 121)", }, ) self.validate_all( "CONVERT(DATETIME2, x, 121)", write={ "spark": "TO_TIMESTAMP(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS')", "tsql": "CONVERT(DATETIME2, x, 121)", }, ) self.validate_all( "CONVERT(INT, x)", write={ "spark": "CAST(x AS INT)", "tsql": "CONVERT(INTEGER, x)", }, ) self.validate_all( "CONVERT(INT, x, 121)", write={ "spark": "CAST(x AS INT)", "tsql": "CONVERT(INTEGER, x, 121)", }, ) self.validate_all( "TRY_CONVERT(NVARCHAR, x, 121)", write={ "spark": "TRY_CAST(DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss.SSSSSS') AS VARCHAR(30))", "tsql": "TRY_CONVERT(NVARCHAR, x, 121)", }, ) self.validate_all( "TRY_CONVERT(INT, x)", write={ "spark": "TRY_CAST(x AS INT)", "tsql": "TRY_CONVERT(INTEGER, x)", }, ) self.validate_all( "TRY_CAST(x AS INT)", write={ "spark": "TRY_CAST(x AS INT)", "tsql": "TRY_CAST(x AS INTEGER)", }, ) self.validate_all( "SELECT CONVERT(VARCHAR(10), testdb.dbo.test.x, 120) y FROM testdb.dbo.test", write={ "mysql": "SELECT CAST(DATE_FORMAT(testdb.dbo.test.x, '%Y-%m-%d %T') AS CHAR(10)) AS y FROM testdb.dbo.test", "spark": "SELECT CAST(DATE_FORMAT(testdb.dbo.test.x, 'yyyy-MM-dd HH:mm:ss') AS VARCHAR(10)) AS y FROM testdb.dbo.test", "tsql": "SELECT CONVERT(VARCHAR(10), testdb.dbo.test.x, 120) AS y FROM testdb.dbo.test", }, ) self.validate_all( "SELECT CONVERT(VARCHAR(10), y.x) z FROM testdb.dbo.test y", write={ "mysql": "SELECT CAST(y.x AS CHAR(10)) AS z FROM testdb.dbo.test AS y", "spark": "SELECT CAST(y.x AS VARCHAR(10)) AS z FROM testdb.dbo.test AS y", "tsql": "SELECT CONVERT(VARCHAR(10), y.x) AS z FROM testdb.dbo.test AS y", }, ) self.validate_all( "SELECT CAST((SELECT x FROM y) AS VARCHAR) AS test", write={ "spark": "SELECT CAST((SELECT x FROM y) AS STRING) AS test", "tsql": "SELECT CAST((SELECT x FROM y) AS VARCHAR) AS test", }, ) def test_add_date(self): self.validate_identity("SELECT DATEADD(YEAR, 1, '2017/08/25')") self.validate_all( "DATEADD(year, 50, '2006-07-31')", write={"bigquery": "DATE_ADD('2006-07-31', INTERVAL 50 YEAR)"}, ) self.validate_all( "SELECT DATEADD(year, 1, '2017/08/25')", write={"spark": "SELECT ADD_MONTHS('2017/08/25', 12)"}, ) self.validate_all( "SELECT DATEADD(qq, 1, '2017/08/25')", write={"spark": "SELECT ADD_MONTHS('2017/08/25', 3)"}, ) self.validate_all( "SELECT DATEADD(wk, 1, '2017/08/25')", write={ "spark": "SELECT DATE_ADD('2017/08/25', 7)", "databricks": "SELECT DATEADD(WEEK, 1, '2017/08/25')", }, ) def test_date_diff(self): self.validate_identity("SELECT DATEDIFF(HOUR, 1.5, '2021-01-01')") self.validate_all( "SELECT DATEDIFF(quarter, 0, '2021-01-01')", write={ "tsql": "SELECT DATEDIFF(QUARTER, CAST('1900-01-01' AS DATETIME2), CAST('2021-01-01' AS DATETIME2))", "spark": "SELECT DATEDIFF(QUARTER, CAST('1900-01-01' AS TIMESTAMP), CAST('2021-01-01' AS TIMESTAMP))", "duckdb": "SELECT DATE_DIFF('QUARTER', CAST('1900-01-01' AS TIMESTAMP), CAST('2021-01-01' AS TIMESTAMP))", }, ) self.validate_all( "SELECT DATEDIFF(day, 1, '2021-01-01')", write={ "tsql": "SELECT DATEDIFF(DAY, CAST('1900-01-02' AS DATETIME2), CAST('2021-01-01' AS DATETIME2))", "spark": "SELECT DATEDIFF(DAY, CAST('1900-01-02' AS TIMESTAMP), CAST('2021-01-01' AS TIMESTAMP))", "duckdb": "SELECT DATE_DIFF('DAY', CAST('1900-01-02' AS TIMESTAMP), CAST('2021-01-01' AS TIMESTAMP))", }, ) self.validate_all( "SELECT DATEDIFF(year, '2020-01-01', '2021-01-01')", write={ "tsql": "SELECT DATEDIFF(YEAR, CAST('2020-01-01' AS DATETIME2), CAST('2021-01-01' AS DATETIME2))", "spark": "SELECT DATEDIFF(YEAR, CAST('2020-01-01' AS TIMESTAMP), CAST('2021-01-01' AS TIMESTAMP))", "spark2": "SELECT CAST(MONTHS_BETWEEN(CAST('2021-01-01' AS TIMESTAMP), CAST('2020-01-01' AS TIMESTAMP)) / 12 AS INT)", }, ) self.validate_all( "SELECT DATEDIFF(mm, 'start', 'end')", write={ "databricks": "SELECT DATEDIFF(MONTH, CAST('start' AS TIMESTAMP), CAST('end' AS TIMESTAMP))", "spark2": "SELECT CAST(MONTHS_BETWEEN(CAST('end' AS TIMESTAMP), CAST('start' AS TIMESTAMP)) AS INT)", "tsql": "SELECT DATEDIFF(MONTH, CAST('start' AS DATETIME2), CAST('end' AS DATETIME2))", }, ) self.validate_all( "SELECT DATEDIFF(quarter, 'start', 'end')", write={ "databricks": "SELECT DATEDIFF(QUARTER, CAST('start' AS TIMESTAMP), CAST('end' AS TIMESTAMP))", "spark": "SELECT DATEDIFF(QUARTER, CAST('start' AS TIMESTAMP), CAST('end' AS TIMESTAMP))", "spark2": "SELECT CAST(MONTHS_BETWEEN(CAST('end' AS TIMESTAMP), CAST('start' AS TIMESTAMP)) / 3 AS INT)", "tsql": "SELECT DATEDIFF(QUARTER, CAST('start' AS DATETIME2), CAST('end' AS DATETIME2))", }, ) def test_lateral_subquery(self): self.validate_all( "SELECT x.a, x.b, t.v, t.y FROM x CROSS APPLY (SELECT v, y FROM t) t(v, y)", write={ "spark": "SELECT x.a, x.b, t.v, t.y FROM x INNER JOIN LATERAL (SELECT v, y FROM t) AS t(v, y)", "tsql": "SELECT x.a, x.b, t.v, t.y FROM x CROSS APPLY (SELECT v, y FROM t) AS t(v, y)", }, ) self.validate_all( "SELECT x.a, x.b, t.v, t.y FROM x OUTER APPLY (SELECT v, y FROM t) t(v, y)", write={ "spark": "SELECT x.a, x.b, t.v, t.y FROM x LEFT JOIN LATERAL (SELECT v, y FROM t) AS t(v, y)", "tsql": "SELECT x.a, x.b, t.v, t.y FROM x OUTER APPLY (SELECT v, y FROM t) AS t(v, y)", }, ) self.validate_all( "SELECT x.a, x.b, t.v, t.y, s.v, s.y FROM x OUTER APPLY (SELECT v, y FROM t) t(v, y) OUTER APPLY (SELECT v, y FROM t) s(v, y) LEFT JOIN z ON z.id = s.id", write={ "spark": "SELECT x.a, x.b, t.v, t.y, s.v, s.y FROM x LEFT JOIN LATERAL (SELECT v, y FROM t) AS t(v, y) LEFT JOIN LATERAL (SELECT v, y FROM t) AS s(v, y) LEFT JOIN z ON z.id = s.id", "tsql": "SELECT x.a, x.b, t.v, t.y, s.v, s.y FROM x OUTER APPLY (SELECT v, y FROM t) AS t(v, y) OUTER APPLY (SELECT v, y FROM t) AS s(v, y) LEFT JOIN z ON z.id = s.id", }, ) def test_lateral_table_valued_function(self): self.validate_all( "SELECT t.x, y.z FROM x CROSS APPLY tvfTest(t.x) y(z)", write={ "spark": "SELECT t.x, y.z FROM x INNER JOIN LATERAL TVFTEST(t.x) AS y(z)", "tsql": "SELECT t.x, y.z FROM x CROSS APPLY TVFTEST(t.x) AS y(z)", }, ) self.validate_all( "SELECT t.x, y.z FROM x OUTER APPLY tvfTest(t.x)y(z)", write={ "spark": "SELECT t.x, y.z FROM x LEFT JOIN LATERAL TVFTEST(t.x) AS y(z)", "tsql": "SELECT t.x, y.z FROM x OUTER APPLY TVFTEST(t.x) AS y(z)", }, ) self.validate_all( "SELECT t.x, y.z FROM x OUTER APPLY a.b.tvfTest(t.x)y(z)", write={ "spark": "SELECT t.x, y.z FROM x LEFT JOIN LATERAL a.b.TVFTEST(t.x) AS y(z)", "tsql": "SELECT t.x, y.z FROM x OUTER APPLY a.b.TVFTEST(t.x) AS y(z)", }, ) def test_top(self): self.validate_all( "SELECT DISTINCT TOP 3 * FROM A", read={ "spark": "SELECT DISTINCT * FROM A LIMIT 3", }, write={ "spark": "SELECT DISTINCT * FROM A LIMIT 3", "teradata": "SELECT DISTINCT TOP 3 * FROM A", "tsql": "SELECT DISTINCT TOP 3 * FROM A", }, ) self.validate_all( "SELECT TOP (3) * FROM A", write={ "spark": "SELECT * FROM A LIMIT 3", }, ) def test_format(self): self.validate_identity("SELECT FORMAT(foo, 'dddd', 'de-CH')") self.validate_identity("SELECT FORMAT(EndOfDayRate, 'N', 'en-us')") self.validate_identity("SELECT FORMAT('01-01-1991', 'd.mm.yyyy')") self.validate_identity("SELECT FORMAT(12345, '###.###.###')") self.validate_identity("SELECT FORMAT(1234567, 'f')") self.validate_all( "SELECT FORMAT(1000000.01,'###,###.###')", write={ "spark": "SELECT FORMAT_NUMBER(1000000.01, '###,###.###')", "tsql": "SELECT FORMAT(1000000.01, '###,###.###')", }, ) self.validate_all( "SELECT FORMAT(1234567, 'f')", write={ "spark": "SELECT FORMAT_NUMBER(1234567, 'f')", "tsql": "SELECT FORMAT(1234567, 'f')", }, ) self.validate_all( "SELECT FORMAT('01-01-1991', 'dd.mm.yyyy')", write={ "spark": "SELECT DATE_FORMAT('01-01-1991', 'dd.mm.yyyy')", "tsql": "SELECT FORMAT('01-01-1991', 'dd.mm.yyyy')", }, ) self.validate_all( "SELECT FORMAT(date_col, 'dd.mm.yyyy')", write={ "spark": "SELECT DATE_FORMAT(date_col, 'dd.mm.yyyy')", "tsql": "SELECT FORMAT(date_col, 'dd.mm.yyyy')", }, ) self.validate_all( "SELECT FORMAT(date_col, 'm')", write={ "spark": "SELECT DATE_FORMAT(date_col, 'MMMM d')", "tsql": "SELECT FORMAT(date_col, 'MMMM d')", }, ) self.validate_all( "SELECT FORMAT(num_col, 'c')", write={ "spark": "SELECT FORMAT_NUMBER(num_col, 'c')", "tsql": "SELECT FORMAT(num_col, 'c')", }, ) def test_string(self): self.validate_all( "SELECT N'test'", write={"spark": "SELECT 'test'"}, ) self.validate_all( "SELECT n'test'", write={"spark": "SELECT 'test'"}, ) self.validate_all( "SELECT '''test'''", write={"spark": r"SELECT '\'test\''"}, ) def test_eomonth(self): self.validate_all( "EOMONTH(GETDATE())", read={ "spark": "LAST_DAY(CURRENT_TIMESTAMP())", }, write={ "bigquery": "LAST_DAY(CAST(CURRENT_TIMESTAMP() AS DATE))", "clickhouse": "LAST_DAY(CAST(CURRENT_TIMESTAMP() AS DATE))", "duckdb": "LAST_DAY(CAST(CURRENT_TIMESTAMP AS DATE))", "mysql": "LAST_DAY(DATE(CURRENT_TIMESTAMP()))", "postgres": "CAST(DATE_TRUNC('MONTH', CAST(CURRENT_TIMESTAMP AS DATE)) + INTERVAL '1 MONTH' - INTERVAL '1 DAY' AS DATE)", "presto": "LAST_DAY_OF_MONTH(CAST(CAST(CURRENT_TIMESTAMP AS TIMESTAMP) AS DATE))", "redshift": "LAST_DAY(CAST(GETDATE() AS DATE))", "snowflake": "LAST_DAY(CAST(CURRENT_TIMESTAMP() AS DATE))", "spark": "LAST_DAY(TO_DATE(CURRENT_TIMESTAMP()))", "tsql": "EOMONTH(CAST(GETDATE() AS DATE))", }, ) self.validate_all( "EOMONTH(GETDATE(), -1)", write={ "bigquery": "LAST_DAY(DATE_ADD(CAST(CURRENT_TIMESTAMP() AS DATE), INTERVAL -1 MONTH))", "clickhouse": "LAST_DAY(DATE_ADD(MONTH, -1, CAST(CURRENT_TIMESTAMP() AS DATE)))", "duckdb": "LAST_DAY(CAST(CURRENT_TIMESTAMP AS DATE) + INTERVAL (-1) MONTH)", "mysql": "LAST_DAY(DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL -1 MONTH))", "postgres": "CAST(DATE_TRUNC('MONTH', CAST(CURRENT_TIMESTAMP AS DATE) + INTERVAL '-1 MONTH') + INTERVAL '1 MONTH' - INTERVAL '1 DAY' AS DATE)", "presto": "LAST_DAY_OF_MONTH(DATE_ADD('MONTH', CAST(-1 AS BIGINT), CAST(CAST(CURRENT_TIMESTAMP AS TIMESTAMP) AS DATE)))", "redshift": "LAST_DAY(DATEADD(MONTH, -1, CAST(GETDATE() AS DATE)))", "snowflake": "LAST_DAY(DATEADD(MONTH, -1, CAST(CURRENT_TIMESTAMP() AS DATE)))", "spark": "LAST_DAY(ADD_MONTHS(TO_DATE(CURRENT_TIMESTAMP()), -1))", "tsql": "EOMONTH(DATEADD(MONTH, -1, CAST(GETDATE() AS DATE)))", }, ) def test_identifier_prefixes(self): expr = parse_one("#x", read="tsql") self.assertIsInstance(expr, exp.Column) self.assertIsInstance(expr.this, exp.Identifier) self.assertTrue(expr.this.args.get("temporary")) self.assertEqual(expr.sql("tsql"), "#x") expr = parse_one("##x", read="tsql") self.assertIsInstance(expr, exp.Column) self.assertIsInstance(expr.this, exp.Identifier) self.assertTrue(expr.this.args.get("global")) self.assertEqual(expr.sql("tsql"), "##x") expr = parse_one("@x", read="tsql") self.assertIsInstance(expr, exp.Parameter) self.assertIsInstance(expr.this, exp.Var) self.assertEqual(expr.sql("tsql"), "@x") table = parse_one("select * from @x", read="tsql").args["from"].this self.assertIsInstance(table, exp.Table) self.assertIsInstance(table.this, exp.Parameter) self.assertIsInstance(table.this.this, exp.Var) self.validate_all( "SELECT @x", write={ "databricks": "SELECT ${x}", "hive": "SELECT ${x}", "spark": "SELECT ${x}", "tsql": "SELECT @x", }, ) def test_temp_table(self): self.validate_all( "SELECT * FROM #mytemptable", write={ "duckdb": "SELECT * FROM mytemptable", "spark": "SELECT * FROM mytemptable", "tsql": "SELECT * FROM #mytemptable", }, ) self.validate_all( "SELECT * FROM ##mytemptable", write={ "duckdb": "SELECT * FROM mytemptable", "spark": "SELECT * FROM mytemptable", "tsql": "SELECT * FROM ##mytemptable", }, ) def test_temporal_table(self): self.validate_identity( """CREATE TABLE test ("data" CHAR(7), "valid_from" DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, "valid_to" DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ("valid_from", "valid_to")) WITH(SYSTEM_VERSIONING=ON)""", "CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON)", ) self.validate_identity( """CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START HIDDEN NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END HIDDEN NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON(HISTORY_TABLE=[dbo].[benchmark_history], DATA_CONSISTENCY_CHECK=ON))""" ) self.validate_identity( """CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON(HISTORY_TABLE=[dbo].[benchmark_history], DATA_CONSISTENCY_CHECK=ON))""" ) self.validate_identity( """CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON(HISTORY_TABLE=[dbo].[benchmark_history], DATA_CONSISTENCY_CHECK=OFF))""" ) self.validate_identity( """CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON(HISTORY_TABLE=[dbo].[benchmark_history]))""" ) self.validate_identity( """CREATE TABLE test ([data] CHAR(7), [valid_from] DATETIME2(2) GENERATED ALWAYS AS ROW START NOT NULL, [valid_to] DATETIME2(2) GENERATED ALWAYS AS ROW END NOT NULL, PERIOD FOR SYSTEM_TIME ([valid_from], [valid_to])) WITH(SYSTEM_VERSIONING=ON(HISTORY_TABLE=[dbo].[benchmark_history]))""" ) def test_system_time(self): self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME AS OF 'foo'") self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME AS OF 'foo' AS alias") self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME FROM c TO d") self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME BETWEEN c AND d") self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME CONTAINED IN (c, d)") self.validate_identity("SELECT [x] FROM [a].[b] FOR SYSTEM_TIME ALL AS alias") def test_current_user(self): self.validate_all( "SUSER_NAME()", write={"spark": "CURRENT_USER()"}, ) self.validate_all( "SUSER_SNAME()", write={"spark": "CURRENT_USER()"}, ) self.validate_all( "SYSTEM_USER()", write={"spark": "CURRENT_USER()"}, ) self.validate_all( "SYSTEM_USER", write={"spark": "CURRENT_USER()"}, ) def test_hints(self): self.validate_all( "SELECT x FROM a INNER HASH JOIN b ON b.id = a.id", write={"spark": "SELECT x FROM a INNER JOIN b ON b.id = a.id"}, ) self.validate_all( "SELECT x FROM a INNER LOOP JOIN b ON b.id = a.id", write={"spark": "SELECT x FROM a INNER JOIN b ON b.id = a.id"}, ) self.validate_all( "SELECT x FROM a INNER REMOTE JOIN b ON b.id = a.id", write={"spark": "SELECT x FROM a INNER JOIN b ON b.id = a.id"}, ) self.validate_all( "SELECT x FROM a INNER MERGE JOIN b ON b.id = a.id", write={"spark": "SELECT x FROM a INNER JOIN b ON b.id = a.id"}, ) self.validate_all( "SELECT x FROM a WITH (NOLOCK)", write={ "spark": "SELECT x FROM a", "tsql": "SELECT x FROM a WITH (NOLOCK)", "": "SELECT x FROM a WITH (NOLOCK)", }, ) self.validate_identity("SELECT x FROM a INNER LOOP JOIN b ON b.id = a.id") def test_openjson(self): self.validate_identity("SELECT * FROM OPENJSON(@json)") self.validate_all( """SELECT [key], value FROM OPENJSON(@json,'$.path.to."sub-object"')""", write={ "tsql": """SELECT [key], value FROM OPENJSON(@json, '$.path.to."sub-object"')""", }, ) self.validate_all( "SELECT * FROM OPENJSON(@array) WITH (month VARCHAR(3), temp int, month_id tinyint '$.sql:identity()') as months", write={ "tsql": "SELECT * FROM OPENJSON(@array) WITH (month VARCHAR(3), temp INTEGER, month_id TINYINT '$.sql:identity()') AS months", }, ) self.validate_all( """ SELECT * FROM OPENJSON ( @json ) WITH ( Number VARCHAR(200) '$.Order.Number', Date DATETIME '$.Order.Date', Customer VARCHAR(200) '$.AccountNumber', Quantity INT '$.Item.Quantity', [Order] NVARCHAR(MAX) AS JSON ) """, write={ "tsql": """SELECT * FROM OPENJSON(@json) WITH ( Number VARCHAR(200) '$.Order.Number', Date DATETIME2 '$.Order.Date', Customer VARCHAR(200) '$.AccountNumber', Quantity INTEGER '$.Item.Quantity', [Order] NVARCHAR(MAX) AS JSON )""" }, pretty=True, ) def test_set(self): self.validate_all( "SET KEY VALUE", write={ "tsql": "SET KEY VALUE", "duckdb": "SET KEY = VALUE", "spark": "SET KEY = VALUE", }, ) self.validate_all( "SET @count = (SELECT COUNT(1) FROM x)", write={ "databricks": "SET count = (SELECT COUNT(1) FROM x)", "tsql": "SET @count = (SELECT COUNT(1) FROM x)", "spark": "SET count = (SELECT COUNT(1) FROM x)", }, ) def test_qualify_derived_table_outputs(self): self.validate_identity( "WITH t AS (SELECT 1) SELECT * FROM t", "WITH t AS (SELECT 1 AS [1]) SELECT * FROM t", ) self.validate_identity( 'WITH t AS (SELECT "c") SELECT * FROM t', "WITH t AS (SELECT [c] AS [c]) SELECT * FROM t", ) self.validate_identity( "SELECT * FROM (SELECT 1) AS subq", "SELECT * FROM (SELECT 1 AS [1]) AS subq", ) self.validate_identity( 'SELECT * FROM (SELECT "c") AS subq', "SELECT * FROM (SELECT [c] AS [c]) AS subq", ) self.validate_all( "WITH t1(c) AS (SELECT 1), t2 AS (SELECT CAST(c AS INTEGER) AS c FROM t1) SELECT * FROM t2", read={ "duckdb": "WITH t1(c) AS (SELECT 1), t2 AS (SELECT CAST(c AS INTEGER) FROM t1) SELECT * FROM t2", }, )