from sqlglot import ParseError, UnsupportedError, exp, transpile from sqlglot.helper import logger as helper_logger from tests.dialects.test_dialect import Validator class TestPostgres(Validator): maxDiff = None dialect = "postgres" def test_postgres(self): self.validate_identity("SHA384(x)") self.validate_identity( 'CREATE TABLE x (a TEXT COLLATE "de_DE")', "CREATE TABLE x (a TEXT COLLATE de_DE)" ) self.validate_identity("1.x", "1. AS x") self.validate_identity("|/ x", "SQRT(x)") self.validate_identity("||/ x", "CBRT(x)") expr = self.parse_one("SELECT * FROM r CROSS JOIN LATERAL UNNEST(ARRAY[1]) AS s(location)") unnest = expr.args["joins"][0].this.this unnest.assert_is(exp.Unnest) alter_table_only = """ALTER TABLE ONLY "Album" ADD CONSTRAINT "FK_AlbumArtistId" FOREIGN KEY ("ArtistId") REFERENCES "Artist" ("ArtistId") ON DELETE NO ACTION ON UPDATE NO ACTION""" expr = self.parse_one(alter_table_only) self.assertIsInstance(expr, exp.AlterTable) self.assertEqual(expr.sql(dialect="postgres"), alter_table_only) self.validate_identity("STRING_TO_ARRAY('xx~^~yy~^~zz', '~^~', 'yy')") self.validate_identity("SELECT x FROM t WHERE CAST($1 AS TEXT) = 'ok'") self.validate_identity("SELECT * FROM t TABLESAMPLE SYSTEM (50) REPEATABLE (55)") self.validate_identity("x @@ y") self.validate_identity("CAST(x AS MONEY)") self.validate_identity("CAST(x AS INT4RANGE)") self.validate_identity("CAST(x AS INT4MULTIRANGE)") self.validate_identity("CAST(x AS INT8RANGE)") self.validate_identity("CAST(x AS INT8MULTIRANGE)") self.validate_identity("CAST(x AS NUMRANGE)") self.validate_identity("CAST(x AS NUMMULTIRANGE)") self.validate_identity("CAST(x AS TSRANGE)") self.validate_identity("CAST(x AS TSMULTIRANGE)") self.validate_identity("CAST(x AS TSTZRANGE)") self.validate_identity("CAST(x AS TSTZMULTIRANGE)") self.validate_identity("CAST(x AS DATERANGE)") self.validate_identity("CAST(x AS DATEMULTIRANGE)") self.validate_identity("x$") self.validate_identity("SELECT ARRAY[1, 2, 3]") self.validate_identity("SELECT ARRAY(SELECT 1)") self.validate_identity("SELECT ARRAY_LENGTH(ARRAY[1, 2, 3], 1)") self.validate_identity("STRING_AGG(x, y)") self.validate_identity("STRING_AGG(x, ',' ORDER BY y)") self.validate_identity("STRING_AGG(x, ',' ORDER BY y DESC)") self.validate_identity("STRING_AGG(DISTINCT x, ',' ORDER BY y DESC)") self.validate_identity("SELECT CASE WHEN SUBSTRING('abcdefg') IN ('ab') THEN 1 ELSE 0 END") self.validate_identity("COMMENT ON TABLE mytable IS 'this'") self.validate_identity("COMMENT ON MATERIALIZED VIEW my_view IS 'this'") self.validate_identity("SELECT e'\\xDEADBEEF'") self.validate_identity("SELECT CAST(e'\\176' AS BYTEA)") self.validate_identity("SELECT * FROM x WHERE SUBSTRING('Thomas' FROM '...$') IN ('mas')") self.validate_identity("SELECT TRIM(' X' FROM ' XXX ')") self.validate_identity("SELECT TRIM(LEADING 'bla' FROM ' XXX ' COLLATE utf8_bin)") self.validate_identity("""SELECT * FROM JSON_TO_RECORDSET(z) AS y("rank" INT)""") self.validate_identity("x ~ 'y'") self.validate_identity("x ~* 'y'") self.validate_identity("SELECT * FROM r CROSS JOIN LATERAL UNNEST(ARRAY[1]) AS s(location)") self.validate_identity("CAST(1 AS DECIMAL) / CAST(2 AS DECIMAL) * -100") self.validate_identity("EXEC AS myfunc @id = 123", check_command_warning=True) self.validate_identity("SELECT CURRENT_USER") self.validate_identity("SELECT * FROM ONLY t1") self.validate_identity( "SELECT ARRAY[1, 2, 3] <@ ARRAY[1, 2]", "SELECT ARRAY[1, 2] @> ARRAY[1, 2, 3]", ) self.validate_identity( """UPDATE "x" SET "y" = CAST('0 days 60.000000 seconds' AS INTERVAL) WHERE "x"."id" IN (2, 3)""" ) self.validate_identity( "WITH t1 AS MATERIALIZED (SELECT 1), t2 AS NOT MATERIALIZED (SELECT 2) SELECT * FROM t1, t2" ) self.validate_identity( """LAST_VALUE("col1") OVER (ORDER BY "col2" RANGE BETWEEN INTERVAL '1 DAY' PRECEDING AND '1 month' FOLLOWING)""" ) self.validate_identity( """ALTER TABLE ONLY "Album" ADD CONSTRAINT "FK_AlbumArtistId" FOREIGN KEY ("ArtistId") REFERENCES "Artist" ("ArtistId") ON DELETE CASCADE""" ) self.validate_identity( """ALTER TABLE ONLY "Album" ADD CONSTRAINT "FK_AlbumArtistId" FOREIGN KEY ("ArtistId") REFERENCES "Artist" ("ArtistId") ON DELETE RESTRICT""" ) self.validate_identity( "SELECT * FROM JSON_ARRAY_ELEMENTS('[1,true, [2,false]]') WITH ORDINALITY" ) self.validate_identity( "SELECT * FROM JSON_ARRAY_ELEMENTS('[1,true, [2,false]]') WITH ORDINALITY AS kv_json" ) self.validate_identity( "SELECT * FROM JSON_ARRAY_ELEMENTS('[1,true, [2,false]]') WITH ORDINALITY AS kv_json(a, b)" ) self.validate_identity( "SELECT SUM(x) OVER a, SUM(y) OVER b FROM c WINDOW a AS (PARTITION BY d), b AS (PARTITION BY e)" ) self.validate_identity( "SELECT CASE WHEN SUBSTRING('abcdefg' FROM 1) IN ('ab') THEN 1 ELSE 0 END" ) self.validate_identity( "SELECT CASE WHEN SUBSTRING('abcdefg' FROM 1 FOR 2) IN ('ab') THEN 1 ELSE 0 END" ) self.validate_identity( 'SELECT * FROM "x" WHERE SUBSTRING("x"."foo" FROM 1 FOR 2) IN (\'mas\')' ) self.validate_identity( "SELECT * FROM x WHERE SUBSTRING('Thomas' FROM '%#\"o_a#\"_' FOR '#') IN ('mas')" ) self.validate_identity( "SELECT SUBSTRING('bla' + 'foo' || 'bar' FROM 3 - 1 + 5 FOR 4 + SOME_FUNC(arg1, arg2))" ) self.validate_identity( "SELECT TO_TIMESTAMP(1284352323.5), TO_TIMESTAMP('05 Dec 2000', 'DD Mon YYYY')" ) self.validate_identity( "SELECT * FROM foo, LATERAL (SELECT * FROM bar WHERE bar.id = foo.bar_id) AS ss" ) self.validate_identity( "SELECT c.oid, n.nspname, c.relname " "FROM pg_catalog.pg_class AS c " "LEFT JOIN pg_catalog.pg_namespace AS n ON n.oid = c.relnamespace " "WHERE c.relname OPERATOR(pg_catalog.~) '^(courses)$' COLLATE pg_catalog.default AND " "pg_catalog.PG_TABLE_IS_VISIBLE(c.oid) " "ORDER BY 2, 3" ) self.validate_identity( "SELECT ARRAY[]::INT[] AS foo", "SELECT CAST(ARRAY[] AS INT[]) AS foo", ) self.validate_identity( "SELECT DATE_PART('isodow'::varchar(6), current_date)", "SELECT EXTRACT(CAST('isodow' AS VARCHAR(6)) FROM CURRENT_DATE)", ) self.validate_identity( "END WORK AND NO CHAIN", "COMMIT AND NO CHAIN", ) self.validate_identity( "END AND CHAIN", "COMMIT AND CHAIN", ) self.validate_identity( """x ? 'x'""", "x ? 'x'", ) self.validate_identity( "SELECT $$a$$", "SELECT 'a'", ) self.validate_identity( "SELECT $$Dianne's horse$$", "SELECT 'Dianne''s horse'", ) self.validate_identity( "SELECT $$The price is $9.95$$ AS msg", "SELECT 'The price is $9.95' AS msg", ) self.validate_identity( "COMMENT ON TABLE mytable IS $$doc this$$", "COMMENT ON TABLE mytable IS 'doc this'" ) self.validate_identity( "UPDATE MYTABLE T1 SET T1.COL = 13", "UPDATE MYTABLE AS T1 SET T1.COL = 13", ) self.validate_identity( "x !~ 'y'", "NOT x ~ 'y'", ) self.validate_identity( "x !~* 'y'", "NOT x ~* 'y'", ) self.validate_identity( "x ~~ 'y'", "x LIKE 'y'", ) self.validate_identity( "x ~~* 'y'", "x ILIKE 'y'", ) self.validate_identity( "x !~~ 'y'", "NOT x LIKE 'y'", ) self.validate_identity( "x !~~* 'y'", "NOT x ILIKE 'y'", ) self.validate_identity( "'45 days'::interval day", "CAST('45 days' AS INTERVAL DAY)", ) self.validate_identity( "'x' 'y' 'z'", "CONCAT('x', 'y', 'z')", ) self.validate_identity( "x::cstring", "CAST(x AS CSTRING)", ) self.validate_identity( "x::oid", "CAST(x AS OID)", ) self.validate_identity( "x::regclass", "CAST(x AS REGCLASS)", ) self.validate_identity( "x::regcollation", "CAST(x AS REGCOLLATION)", ) self.validate_identity( "x::regconfig", "CAST(x AS REGCONFIG)", ) self.validate_identity( "x::regdictionary", "CAST(x AS REGDICTIONARY)", ) self.validate_identity( "x::regnamespace", "CAST(x AS REGNAMESPACE)", ) self.validate_identity( "x::regoper", "CAST(x AS REGOPER)", ) self.validate_identity( "x::regoperator", "CAST(x AS REGOPERATOR)", ) self.validate_identity( "x::regproc", "CAST(x AS REGPROC)", ) self.validate_identity( "x::regprocedure", "CAST(x AS REGPROCEDURE)", ) self.validate_identity( "x::regrole", "CAST(x AS REGROLE)", ) self.validate_identity( "x::regtype", "CAST(x AS REGTYPE)", ) self.validate_identity( "123::CHARACTER VARYING", "CAST(123 AS VARCHAR)", ) self.validate_identity( "TO_TIMESTAMP(123::DOUBLE PRECISION)", "TO_TIMESTAMP(CAST(123 AS DOUBLE PRECISION))", ) self.validate_identity( "SELECT to_timestamp(123)::time without time zone", "SELECT CAST(TO_TIMESTAMP(123) AS TIME)", ) self.validate_identity( "SELECT SUM(x) OVER (PARTITION BY a ORDER BY d ROWS 1 PRECEDING)", "SELECT SUM(x) OVER (PARTITION BY a ORDER BY d ROWS BETWEEN 1 PRECEDING AND CURRENT ROW)", ) self.validate_identity( "SELECT SUBSTRING(2022::CHAR(4) || LPAD(3::CHAR(2), 2, '0') FROM 3 FOR 4)", "SELECT SUBSTRING(CAST(2022 AS CHAR(4)) || LPAD(CAST(3 AS CHAR(2)), 2, '0') FROM 3 FOR 4)", ) self.validate_identity( "SELECT m.name FROM manufacturers AS m LEFT JOIN LATERAL GET_PRODUCT_NAMES(m.id) pname ON TRUE WHERE pname IS NULL", "SELECT m.name FROM manufacturers AS m LEFT JOIN LATERAL GET_PRODUCT_NAMES(m.id) AS pname ON TRUE WHERE pname IS NULL", ) self.validate_identity( "SELECT p1.id, p2.id, v1, v2 FROM polygons AS p1, polygons AS p2, LATERAL VERTICES(p1.poly) v1, LATERAL VERTICES(p2.poly) v2 WHERE (v1 <-> v2) < 10 AND p1.id <> p2.id", "SELECT p1.id, p2.id, v1, v2 FROM polygons AS p1, polygons AS p2, LATERAL VERTICES(p1.poly) AS v1, LATERAL VERTICES(p2.poly) AS v2 WHERE (v1 <-> v2) < 10 AND p1.id <> p2.id", ) self.validate_identity( "SELECT id, email, CAST(deleted AS TEXT) FROM users WHERE deleted NOTNULL", "SELECT id, email, CAST(deleted AS TEXT) FROM users WHERE NOT deleted IS NULL", ) self.validate_identity( "SELECT id, email, CAST(deleted AS TEXT) FROM users WHERE NOT deleted ISNULL", "SELECT id, email, CAST(deleted AS TEXT) FROM users WHERE NOT deleted IS NULL", ) self.validate_identity( """'{"x": {"y": 1}}'::json->'x'->'y'""", """CAST('{"x": {"y": 1}}' AS JSON) -> 'x' -> 'y'""", ) self.validate_identity( """'[1,2,3]'::json->>2""", "CAST('[1,2,3]' AS JSON) ->> 2", ) self.validate_identity( """'{"a":1,"b":2}'::json->>'b'""", """CAST('{"a":1,"b":2}' AS JSON) ->> 'b'""", ) self.validate_identity( """'{"a":[1,2,3],"b":[4,5,6]}'::json#>'{a,2}'""", """CAST('{"a":[1,2,3],"b":[4,5,6]}' AS JSON) #> '{a,2}'""", ) self.validate_identity( """'{"a":[1,2,3],"b":[4,5,6]}'::json#>>'{a,2}'""", """CAST('{"a":[1,2,3],"b":[4,5,6]}' AS JSON) #>> '{a,2}'""", ) self.validate_identity( "'[1,2,3]'::json->2", "CAST('[1,2,3]' AS JSON) -> 2", ) self.validate_identity( """SELECT JSON_ARRAY_ELEMENTS((foo->'sections')::JSON) AS sections""", """SELECT JSON_ARRAY_ELEMENTS(CAST((foo -> 'sections') AS JSON)) AS sections""", ) self.validate_identity( "MERGE INTO x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET x.a = y.b WHEN NOT MATCHED THEN INSERT (a, b) VALUES (y.a, y.b)", "MERGE INTO x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b WHEN NOT MATCHED THEN INSERT (a, b) VALUES (y.a, y.b)", ) self.validate_identity( "SELECT * FROM t1*", "SELECT * FROM t1", ) self.validate_identity( "SELECT SUBSTRING('afafa' for 1)", "SELECT SUBSTRING('afafa' FROM 1 FOR 1)", ) self.validate_identity( "CAST(x AS INT8)", "CAST(x AS BIGINT)", ) self.validate_all( "STRING_TO_ARRAY('xx~^~yy~^~zz', '~^~', 'yy')", read={ "doris": "SPLIT_BY_STRING('xx~^~yy~^~zz', '~^~', 'yy')", }, write={ "doris": "SPLIT_BY_STRING('xx~^~yy~^~zz', '~^~', 'yy')", "postgres": "STRING_TO_ARRAY('xx~^~yy~^~zz', '~^~', 'yy')", }, ) self.validate_all( "SELECT ARRAY[1, 2, 3] @> ARRAY[1, 2]", read={ "duckdb": "SELECT ARRAY_HAS_ALL([1, 2, 3], [1, 2])", }, write={ "duckdb": "SELECT ARRAY_HAS_ALL([1, 2, 3], [1, 2])", "mysql": UnsupportedError, "postgres": "SELECT ARRAY[1, 2, 3] @> ARRAY[1, 2]", }, ) self.validate_all( "SELECT REGEXP_REPLACE('mr .', '[^a-zA-Z]', '', 'g')", write={ "duckdb": "SELECT REGEXP_REPLACE('mr .', '[^a-zA-Z]', '', 'g')", "postgres": "SELECT REGEXP_REPLACE('mr .', '[^a-zA-Z]', '', 'g')", }, ) self.validate_all( "CREATE TABLE t (c INT)", read={ "mysql": "CREATE TABLE t (c INT COMMENT 'comment 1') COMMENT = 'comment 2'", }, ) self.validate_all( 'SELECT * FROM "test_table" ORDER BY RANDOM() LIMIT 5', write={ "bigquery": "SELECT * FROM `test_table` ORDER BY RAND() NULLS LAST LIMIT 5", "duckdb": 'SELECT * FROM "test_table" ORDER BY RANDOM() LIMIT 5', "postgres": 'SELECT * FROM "test_table" ORDER BY RANDOM() LIMIT 5', "tsql": "SELECT TOP 5 * FROM [test_table] ORDER BY RAND()", }, ) self.validate_all( "SELECT (data -> 'en-US') AS acat FROM my_table", write={ "duckdb": """SELECT (data -> '$."en-US"') AS acat FROM my_table""", "postgres": "SELECT (data -> 'en-US') AS acat FROM my_table", }, ) self.validate_all( "SELECT (data ->> 'en-US') AS acat FROM my_table", write={ "duckdb": """SELECT (data ->> '$."en-US"') AS acat FROM my_table""", "postgres": "SELECT (data ->> 'en-US') AS acat FROM my_table", }, ) self.validate_all( "SELECT ARRAY[1, 2, 3] && ARRAY[1, 2]", write={ "": "SELECT ARRAY_OVERLAPS(ARRAY(1, 2, 3), ARRAY(1, 2))", "postgres": "SELECT ARRAY[1, 2, 3] && ARRAY[1, 2]", }, ) self.validate_all( "SELECT JSON_EXTRACT_PATH_TEXT(x, k1, k2, k3) FROM t", read={ "clickhouse": "SELECT JSONExtractString(x, k1, k2, k3) FROM t", "redshift": "SELECT JSON_EXTRACT_PATH_TEXT(x, k1, k2, k3) FROM t", }, write={ "clickhouse": "SELECT JSONExtractString(x, k1, k2, k3) FROM t", "postgres": "SELECT JSON_EXTRACT_PATH_TEXT(x, k1, k2, k3) FROM t", "redshift": "SELECT JSON_EXTRACT_PATH_TEXT(x, k1, k2, k3) FROM t", }, ) self.validate_all( "x #> 'y'", read={ "": "JSONB_EXTRACT(x, 'y')", }, write={ "": "JSONB_EXTRACT(x, 'y')", "postgres": "x #> 'y'", }, ) self.validate_all( "x #>> 'y'", read={ "": "JSONB_EXTRACT_SCALAR(x, 'y')", }, write={ "": "JSONB_EXTRACT_SCALAR(x, 'y')", "postgres": "x #>> 'y'", }, ) self.validate_all( "x -> 'y' -> 0 -> 'z'", write={ "": "JSON_EXTRACT(JSON_EXTRACT(JSON_EXTRACT(x, '$.y'), '$[0]'), '$.z')", "postgres": "x -> 'y' -> 0 -> 'z'", }, ) self.validate_all( """JSON_EXTRACT_PATH('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}','f4')""", write={ "": """JSON_EXTRACT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4')""", "bigquery": """JSON_EXTRACT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4')""", "duckdb": """'{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}' -> '$.f4'""", "mysql": """JSON_EXTRACT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4')""", "postgres": """JSON_EXTRACT_PATH('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', 'f4')""", "presto": """JSON_EXTRACT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4')""", "redshift": """JSON_EXTRACT_PATH_TEXT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', 'f4')""", "spark": """GET_JSON_OBJECT('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4')""", "sqlite": """'{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}' -> '$.f4'""", "tsql": """ISNULL(JSON_QUERY('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4'), JSON_VALUE('{"f2":{"f3":1},"f4":{"f5":99,"f6":"foo"}}', '$.f4'))""", }, ) self.validate_all( """JSON_EXTRACT_PATH_TEXT('{"farm": ["a", "b", "c"]}', 'farm', '0')""", read={ "duckdb": """'{"farm": ["a", "b", "c"]}' ->> '$.farm[0]'""", "redshift": """JSON_EXTRACT_PATH_TEXT('{"farm": ["a", "b", "c"]}', 'farm', '0')""", }, write={ "duckdb": """'{"farm": ["a", "b", "c"]}' ->> '$.farm[0]'""", "postgres": """JSON_EXTRACT_PATH_TEXT('{"farm": ["a", "b", "c"]}', 'farm', '0')""", "redshift": """JSON_EXTRACT_PATH_TEXT('{"farm": ["a", "b", "c"]}', 'farm', '0')""", }, ) self.validate_all( "JSON_EXTRACT_PATH(x, 'x', 'y', 'z')", read={ "duckdb": "x -> '$.x.y.z'", "postgres": "JSON_EXTRACT_PATH(x, 'x', 'y', 'z')", }, write={ "duckdb": "x -> '$.x.y.z'", "redshift": "JSON_EXTRACT_PATH_TEXT(x, 'x', 'y', 'z')", }, ) self.validate_all( "SELECT * FROM t TABLESAMPLE SYSTEM (50)", write={ "postgres": "SELECT * FROM t TABLESAMPLE SYSTEM (50)", "redshift": UnsupportedError, }, ) self.validate_all( "SELECT PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY amount)", write={ "databricks": "SELECT PERCENTILE_APPROX(amount, 0.5)", "postgres": "SELECT PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY amount)", "presto": "SELECT APPROX_PERCENTILE(amount, 0.5)", "spark": "SELECT PERCENTILE_APPROX(amount, 0.5)", "trino": "SELECT APPROX_PERCENTILE(amount, 0.5)", }, ) self.validate_all( "e'x'", write={ "mysql": "x", }, ) self.validate_all( "SELECT DATE_PART('minute', timestamp '2023-01-04 04:05:06.789')", write={ "postgres": "SELECT EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))", "redshift": "SELECT EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))", "snowflake": "SELECT DATE_PART(minute, CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))", }, ) self.validate_all( "SELECT DATE_PART('month', date '20220502')", write={ "postgres": "SELECT EXTRACT(month FROM CAST('20220502' AS DATE))", "redshift": "SELECT EXTRACT(month FROM CAST('20220502' AS DATE))", "snowflake": "SELECT DATE_PART(month, CAST('20220502' AS DATE))", }, ) self.validate_all( "SELECT (DATE '2016-01-10', DATE '2016-02-01') OVERLAPS (DATE '2016-01-20', DATE '2016-02-10')", write={ "postgres": "SELECT (CAST('2016-01-10' AS DATE), CAST('2016-02-01' AS DATE)) OVERLAPS (CAST('2016-01-20' AS DATE), CAST('2016-02-10' AS DATE))", "tsql": "SELECT (CAST('2016-01-10' AS DATE), CAST('2016-02-01' AS DATE)) OVERLAPS (CAST('2016-01-20' AS DATE), CAST('2016-02-10' AS DATE))", }, ) self.validate_all( "SELECT DATE_PART('epoch', CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))", read={ "": "SELECT TIME_TO_UNIX(TIMESTAMP '2023-01-04 04:05:06.789')", }, ) self.validate_all( "x ^ y", write={ "": "POWER(x, y)", "postgres": "x ^ y", }, ) self.validate_all( "x # y", write={ "": "x ^ y", "postgres": "x # y", }, ) self.validate_all( "GENERATE_SERIES(a, b, ' 2 days ')", write={ "postgres": "GENERATE_SERIES(a, b, INTERVAL '2 DAYS')", "presto": "SEQUENCE(a, b, INTERVAL '2' DAY)", "trino": "SEQUENCE(a, b, INTERVAL '2' DAY)", }, ) self.validate_all( "GENERATE_SERIES('2019-01-01'::TIMESTAMP, NOW(), '1day')", write={ "postgres": "GENERATE_SERIES(CAST('2019-01-01' AS TIMESTAMP), CURRENT_TIMESTAMP, INTERVAL '1 DAY')", "presto": "SEQUENCE(CAST('2019-01-01' AS TIMESTAMP), CAST(CURRENT_TIMESTAMP AS TIMESTAMP), INTERVAL '1' DAY)", "trino": "SEQUENCE(CAST('2019-01-01' AS TIMESTAMP), CAST(CURRENT_TIMESTAMP AS TIMESTAMP), INTERVAL '1' DAY)", }, ) self.validate_all( "GENERATE_SERIES(a, b)", write={ "postgres": "GENERATE_SERIES(a, b)", "presto": "SEQUENCE(a, b)", "trino": "SEQUENCE(a, b)", "tsql": "GENERATE_SERIES(a, b)", }, ) self.validate_all( "GENERATE_SERIES(a, b)", read={ "postgres": "GENERATE_SERIES(a, b)", "presto": "SEQUENCE(a, b)", "trino": "SEQUENCE(a, b)", "tsql": "GENERATE_SERIES(a, b)", }, ) self.validate_all( "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4)", write={ "postgres": "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4)", "presto": "SELECT * FROM t CROSS JOIN UNNEST(SEQUENCE(2, 4))", "trino": "SELECT * FROM t CROSS JOIN UNNEST(SEQUENCE(2, 4))", "tsql": "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4)", }, ) self.validate_all( "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4) AS s", write={ "postgres": "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4) AS s", "presto": "SELECT * FROM t CROSS JOIN UNNEST(SEQUENCE(2, 4)) AS _u(s)", "trino": "SELECT * FROM t CROSS JOIN UNNEST(SEQUENCE(2, 4)) AS _u(s)", "tsql": "SELECT * FROM t CROSS JOIN GENERATE_SERIES(2, 4) AS s", }, ) self.validate_all( "SELECT * FROM x FETCH 1 ROW", write={ "postgres": "SELECT * FROM x FETCH FIRST 1 ROWS ONLY", "presto": "SELECT * FROM x FETCH FIRST 1 ROWS ONLY", "hive": "SELECT * FROM x LIMIT 1", "spark": "SELECT * FROM x LIMIT 1", "sqlite": "SELECT * FROM x LIMIT 1", }, ) self.validate_all( "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname", write={ "postgres": "SELECT fname, lname, age FROM person ORDER BY age DESC, fname ASC, lname", "presto": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC, lname", "hive": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname NULLS LAST", "spark": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname NULLS LAST", }, ) self.validate_all( "SELECT CASE WHEN SUBSTRING('abcdefg' FROM 1 FOR 2) IN ('ab') THEN 1 ELSE 0 END", write={ "hive": "SELECT CASE WHEN SUBSTRING('abcdefg', 1, 2) IN ('ab') THEN 1 ELSE 0 END", "spark": "SELECT CASE WHEN SUBSTRING('abcdefg', 1, 2) IN ('ab') THEN 1 ELSE 0 END", }, ) self.validate_all( "SELECT * FROM x WHERE SUBSTRING(col1 FROM 3 + LENGTH(col1) - 10 FOR 10) IN (col2)", write={ "hive": "SELECT * FROM x WHERE SUBSTRING(col1, 3 + LENGTH(col1) - 10, 10) IN (col2)", "spark": "SELECT * FROM x WHERE SUBSTRING(col1, 3 + LENGTH(col1) - 10, 10) IN (col2)", }, ) self.validate_all( "SELECT TRIM(BOTH ' XXX ')", write={ "mysql": "SELECT TRIM(' XXX ')", "postgres": "SELECT TRIM(' XXX ')", "hive": "SELECT TRIM(' XXX ')", }, ) self.validate_all( "TRIM(LEADING FROM ' XXX ')", write={ "mysql": "LTRIM(' XXX ')", "postgres": "LTRIM(' XXX ')", "hive": "LTRIM(' XXX ')", "presto": "LTRIM(' XXX ')", }, ) self.validate_all( "TRIM(TRAILING FROM ' XXX ')", write={ "mysql": "RTRIM(' XXX ')", "postgres": "RTRIM(' XXX ')", "hive": "RTRIM(' XXX ')", "presto": "RTRIM(' XXX ')", }, ) self.validate_all( """'{"a":1,"b":2}'::json->'b'""", write={ "postgres": """CAST('{"a":1,"b":2}' AS JSON) -> 'b'""", "redshift": """JSON_EXTRACT_PATH_TEXT('{"a":1,"b":2}', 'b')""", }, ) self.validate_all( "TRIM(BOTH 'as' FROM 'as string as')", write={ "postgres": "TRIM(BOTH 'as' FROM 'as string as')", "spark": "TRIM(BOTH 'as' FROM 'as string as')", }, ) self.validate_all( """merge into x as x using (select id) as y on a = b WHEN matched then update set X."A" = y.b""", write={ "postgres": """MERGE INTO x AS x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET "A" = y.b""", "trino": """MERGE INTO x AS x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET "A" = y.b""", "snowflake": """MERGE INTO x AS x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET X."A" = y.b""", }, ) self.validate_all( "merge into x as z using (select id) as y on a = b WHEN matched then update set X.a = y.b", write={ "postgres": "MERGE INTO x AS z USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b", "snowflake": "MERGE INTO x AS z USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET X.a = y.b", }, ) self.validate_all( "merge into x as z using (select id) as y on a = b WHEN matched then update set Z.a = y.b", write={ "postgres": "MERGE INTO x AS z USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b", "snowflake": "MERGE INTO x AS z USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET Z.a = y.b", }, ) self.validate_all( "merge into x using (select id) as y on a = b WHEN matched then update set x.a = y.b", write={ "postgres": "MERGE INTO x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET a = y.b", "snowflake": "MERGE INTO x USING (SELECT id) AS y ON a = b WHEN MATCHED THEN UPDATE SET x.a = y.b", }, ) self.validate_all( "x / y ^ z", write={ "": "x / POWER(y, z)", "postgres": "x / y ^ z", }, ) self.validate_all( "CAST(x AS NAME)", read={ "redshift": "CAST(x AS NAME)", }, write={ "postgres": "CAST(x AS NAME)", "redshift": "CAST(x AS NAME)", }, ) self.assertIsInstance(self.parse_one("id::UUID"), exp.Cast) self.validate_identity( "COPY tbl (col1, col2) FROM 'file' WITH (FORMAT format, HEADER MATCH, FREEZE TRUE)" ) self.validate_identity( "COPY tbl (col1, col2) TO 'file' WITH (FORMAT format, HEADER MATCH, FREEZE TRUE)" ) self.validate_identity( "COPY (SELECT * FROM t) TO 'file' WITH (FORMAT format, HEADER MATCH, FREEZE TRUE)" ) self.validate_identity("cast(a as FLOAT)", "CAST(a AS DOUBLE PRECISION)") self.validate_identity("cast(a as FLOAT8)", "CAST(a AS DOUBLE PRECISION)") self.validate_identity("cast(a as FLOAT4)", "CAST(a AS REAL)") self.validate_all( "1 / DIV(4, 2)", read={ "postgres": "1 / DIV(4, 2)", }, write={ "sqlite": "1 / CAST(CAST(CAST(4 AS REAL) / 2 AS INTEGER) AS REAL)", "duckdb": "1 / CAST(4 // 2 AS DECIMAL)", "bigquery": "1 / CAST(DIV(4, 2) AS NUMERIC)", }, ) self.validate_all( "CAST(DIV(4, 2) AS DECIMAL(5, 3))", read={ "duckdb": "CAST(4 // 2 AS DECIMAL(5, 3))", }, write={ "duckdb": "CAST(CAST(4 // 2 AS DECIMAL) AS DECIMAL(5, 3))", "postgres": "CAST(DIV(4, 2) AS DECIMAL(5, 3))", }, ) def test_ddl(self): # Checks that user-defined types are parsed into DataType instead of Identifier self.parse_one("CREATE TABLE t (a udt)").this.expressions[0].args["kind"].assert_is( exp.DataType ) # Checks that OID is parsed into a DataType (ObjectIdentifier) self.assertIsInstance( self.parse_one("CREATE TABLE p.t (c oid)").find(exp.DataType), exp.ObjectIdentifier ) expr = self.parse_one("CREATE TABLE t (x INTERVAL day)") cdef = expr.find(exp.ColumnDef) cdef.args["kind"].assert_is(exp.DataType) self.assertEqual(expr.sql(dialect="postgres"), "CREATE TABLE t (x INTERVAL DAY)") self.validate_identity("CREATE TABLE t (col INT[3][5])") self.validate_identity("CREATE TABLE t (col INT[3])") self.validate_identity("CREATE INDEX IF NOT EXISTS ON t(c)") self.validate_identity("CREATE INDEX et_vid_idx ON et(vid) INCLUDE (fid)") self.validate_identity("CREATE INDEX idx_x ON x USING BTREE(x, y) WHERE (NOT y IS NULL)") self.validate_identity("CREATE TABLE test (elems JSONB[])") self.validate_identity("CREATE TABLE public.y (x TSTZRANGE NOT NULL)") self.validate_identity("CREATE TABLE test (foo HSTORE)") self.validate_identity("CREATE TABLE test (foo JSONB)") self.validate_identity("CREATE TABLE test (foo VARCHAR(64)[])") self.validate_identity("CREATE TABLE test (foo INT) PARTITION BY HASH(foo)") self.validate_identity("INSERT INTO x VALUES (1, 'a', 2.0) RETURNING a") self.validate_identity("INSERT INTO x VALUES (1, 'a', 2.0) RETURNING a, b") self.validate_identity("INSERT INTO x VALUES (1, 'a', 2.0) RETURNING *") self.validate_identity("UPDATE tbl_name SET foo = 123 RETURNING a") self.validate_identity("CREATE TABLE cities_partdef PARTITION OF cities DEFAULT") self.validate_identity("CREATE TABLE t (c CHAR(2) UNIQUE NOT NULL) INHERITS (t1)") self.validate_identity("CREATE TABLE s.t (c CHAR(2) UNIQUE NOT NULL) INHERITS (s.t1, s.t2)") self.validate_identity("CREATE FUNCTION x(INT) RETURNS INT SET search_path = 'public'") self.validate_identity("TRUNCATE TABLE t1 CONTINUE IDENTITY") self.validate_identity("TRUNCATE TABLE t1 RESTART IDENTITY") self.validate_identity("TRUNCATE TABLE t1 CASCADE") self.validate_identity("TRUNCATE TABLE t1 RESTRICT") self.validate_identity("TRUNCATE TABLE t1 CONTINUE IDENTITY CASCADE") self.validate_identity("TRUNCATE TABLE t1 RESTART IDENTITY RESTRICT") self.validate_identity("ALTER TABLE t1 SET LOGGED") self.validate_identity("ALTER TABLE t1 SET UNLOGGED") self.validate_identity("ALTER TABLE t1 SET WITHOUT CLUSTER") self.validate_identity("ALTER TABLE t1 SET WITHOUT OIDS") self.validate_identity("ALTER TABLE t1 SET ACCESS METHOD method") self.validate_identity("ALTER TABLE t1 SET TABLESPACE tablespace") self.validate_identity("ALTER TABLE t1 SET (fillfactor = 5, autovacuum_enabled = TRUE)") self.validate_identity( "CREATE FUNCTION pymax(a INT, b INT) RETURNS INT LANGUAGE plpython3u AS $$\n if a > b:\n return a\n return b\n$$", ) self.validate_identity( "CREATE TABLE t (vid INT NOT NULL, CONSTRAINT ht_vid_nid_fid_idx EXCLUDE (INT4RANGE(vid, nid) WITH &&, INT4RANGE(fid, fid, '[]') WITH &&))" ) self.validate_identity( "CREATE TABLE t (i INT, PRIMARY KEY (i), EXCLUDE USING gist(col varchar_pattern_ops DESC NULLS LAST WITH &&) WITH (sp1=1, sp2=2))" ) self.validate_identity( "CREATE TABLE t (i INT, EXCLUDE USING btree(INT4RANGE(vid, nid, '[]') ASC NULLS FIRST WITH &&) INCLUDE (col1, col2))" ) self.validate_identity( "CREATE TABLE t (i INT, EXCLUDE USING gin(col1 WITH &&, col2 WITH ||) USING INDEX TABLESPACE tablespace WHERE (id > 5))" ) self.validate_identity( "CREATE TABLE A (LIKE B INCLUDING CONSTRAINT INCLUDING COMPRESSION EXCLUDING COMMENTS)" ) self.validate_identity( "CREATE TABLE cust_part3 PARTITION OF customers FOR VALUES WITH (MODULUS 3, REMAINDER 2)" ) self.validate_identity( "CREATE TABLE measurement_y2016m07 PARTITION OF measurement (unitsales DEFAULT 0) FOR VALUES FROM ('2016-07-01') TO ('2016-08-01')" ) self.validate_identity( "CREATE TABLE measurement_ym_older PARTITION OF measurement_year_month FOR VALUES FROM (MINVALUE, MINVALUE) TO (2016, 11)" ) self.validate_identity( "CREATE TABLE measurement_ym_y2016m11 PARTITION OF measurement_year_month FOR VALUES FROM (2016, 11) TO (2016, 12)" ) self.validate_identity( "CREATE TABLE cities_ab PARTITION OF cities (CONSTRAINT city_id_nonzero CHECK (city_id <> 0)) FOR VALUES IN ('a', 'b')" ) self.validate_identity( "CREATE TABLE cities_ab PARTITION OF cities (CONSTRAINT city_id_nonzero CHECK (city_id <> 0)) FOR VALUES IN ('a', 'b') PARTITION BY RANGE(population)" ) self.validate_identity( "CREATE INDEX foo ON bar.baz USING btree(col1 varchar_pattern_ops ASC, col2)" ) self.validate_identity( "CREATE INDEX index_issues_on_title_trigram ON public.issues USING gin(title public.gin_trgm_ops)" ) self.validate_identity( "INSERT INTO x VALUES (1, 'a', 2.0) ON CONFLICT(id) DO NOTHING RETURNING *" ) self.validate_identity( "INSERT INTO x VALUES (1, 'a', 2.0) ON CONFLICT(id) DO UPDATE SET x.id = 1 RETURNING *" ) self.validate_identity( "INSERT INTO x VALUES (1, 'a', 2.0) ON CONFLICT(id) DO UPDATE SET x.id = excluded.id RETURNING *" ) self.validate_identity( "INSERT INTO x VALUES (1, 'a', 2.0) ON CONFLICT ON CONSTRAINT pkey DO NOTHING RETURNING *" ) self.validate_identity( "INSERT INTO x VALUES (1, 'a', 2.0) ON CONFLICT ON CONSTRAINT pkey DO UPDATE SET x.id = 1 RETURNING *" ) self.validate_identity( "DELETE FROM event USING sales AS s WHERE event.eventid = s.eventid RETURNING a" ) self.validate_identity( "WITH t(c) AS (SELECT 1) SELECT * INTO UNLOGGED foo FROM (SELECT c AS c FROM t) AS temp" ) self.validate_identity( "CREATE TABLE test (x TIMESTAMP WITHOUT TIME ZONE[][])", "CREATE TABLE test (x TIMESTAMP[][])", ) self.validate_identity( "CREATE FUNCTION add(integer, integer) RETURNS INT LANGUAGE SQL IMMUTABLE RETURNS NULL ON NULL INPUT AS 'select $1 + $2;'", ) self.validate_identity( "CREATE FUNCTION add(integer, integer) RETURNS INT LANGUAGE SQL IMMUTABLE STRICT AS 'select $1 + $2;'" ) self.validate_identity( "CREATE FUNCTION add(INT, INT) RETURNS INT SET search_path TO 'public' AS 'select $1 + $2;' LANGUAGE SQL IMMUTABLE", check_command_warning=True, ) self.validate_identity( "CREATE FUNCTION x(INT) RETURNS INT SET foo FROM CURRENT", check_command_warning=True, ) self.validate_identity( "CREATE FUNCTION add(integer, integer) RETURNS integer AS 'select $1 + $2;' LANGUAGE SQL IMMUTABLE CALLED ON NULL INPUT", check_command_warning=True, ) self.validate_identity( "CREATE CONSTRAINT TRIGGER my_trigger AFTER INSERT OR DELETE OR UPDATE OF col_a, col_b ON public.my_table DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION do_sth()", check_command_warning=True, ) self.validate_identity( "CREATE UNLOGGED TABLE foo AS WITH t(c) AS (SELECT 1) SELECT * FROM (SELECT c AS c FROM t) AS temp" ) self.validate_identity( "CREATE TABLE t (col integer ARRAY[3])", "CREATE TABLE t (col INT[3])", ) self.validate_identity( "CREATE TABLE t (col integer ARRAY)", "CREATE TABLE t (col INT[])", ) self.validate_identity( "CREATE FUNCTION x(INT) RETURNS INT SET search_path TO 'public'", "CREATE FUNCTION x(INT) RETURNS INT SET search_path = 'public'", ) self.validate_identity( "CREATE TABLE test (x TIMESTAMP WITHOUT TIME ZONE[][])", "CREATE TABLE test (x TIMESTAMP[][])", ) self.validate_identity( "CREATE OR REPLACE FUNCTION function_name (input_a character varying DEFAULT NULL::character varying)", "CREATE OR REPLACE FUNCTION function_name(input_a VARCHAR DEFAULT CAST(NULL AS VARCHAR))", ) self.validate_identity( "CREATE TABLE products (product_no INT UNIQUE, name TEXT, price DECIMAL)", "CREATE TABLE products (product_no INT UNIQUE, name TEXT, price DECIMAL)", ) self.validate_identity( "CREATE TABLE products (product_no INT CONSTRAINT must_be_different UNIQUE, name TEXT CONSTRAINT present NOT NULL, price DECIMAL)", "CREATE TABLE products (product_no INT CONSTRAINT must_be_different UNIQUE, name TEXT CONSTRAINT present NOT NULL, price DECIMAL)", ) self.validate_identity( "CREATE TABLE products (product_no INT, name TEXT, price DECIMAL, UNIQUE (product_no, name))", "CREATE TABLE products (product_no INT, name TEXT, price DECIMAL, UNIQUE (product_no, name))", ) self.validate_identity( "CREATE TABLE products (" "product_no INT UNIQUE," " name TEXT," " price DECIMAL CHECK (price > 0)," " discounted_price DECIMAL CONSTRAINT positive_discount CHECK (discounted_price > 0)," " CHECK (product_no > 1)," " CONSTRAINT valid_discount CHECK (price > discounted_price))" ) self.validate_identity( """ CREATE INDEX index_ci_builds_on_commit_id_and_artifacts_expireatandidpartial ON public.ci_builds USING btree (commit_id, artifacts_expire_at, id) WHERE ( ((type)::text = 'Ci::Build'::text) AND ((retried = false) OR (retried IS NULL)) AND ((name)::text = ANY (ARRAY[ ('sast'::character varying)::text, ('dependency_scanning'::character varying)::text, ('sast:container'::character varying)::text, ('container_scanning'::character varying)::text, ('dast'::character varying)::text ])) ) """, "CREATE INDEX index_ci_builds_on_commit_id_and_artifacts_expireatandidpartial ON public.ci_builds USING btree(commit_id, artifacts_expire_at, id) WHERE ((CAST((type) AS TEXT) = CAST('Ci::Build' AS TEXT)) AND ((retried = FALSE) OR (retried IS NULL)) AND (CAST((name) AS TEXT) = ANY(ARRAY[CAST((CAST('sast' AS VARCHAR)) AS TEXT), CAST((CAST('dependency_scanning' AS VARCHAR)) AS TEXT), CAST((CAST('sast:container' AS VARCHAR)) AS TEXT), CAST((CAST('container_scanning' AS VARCHAR)) AS TEXT), CAST((CAST('dast' AS VARCHAR)) AS TEXT)])))", ) self.validate_identity( "CREATE INDEX index_ci_pipelines_on_project_idandrefandiddesc ON public.ci_pipelines USING btree(project_id, ref, id DESC)" ) self.validate_identity( "TRUNCATE TABLE ONLY t1, t2*, ONLY t3, t4, t5* RESTART IDENTITY CASCADE", "TRUNCATE TABLE ONLY t1, t2, ONLY t3, t4, t5 RESTART IDENTITY CASCADE", ) self.validate_all( "CREATE TABLE x (a UUID, b BYTEA)", write={ "duckdb": "CREATE TABLE x (a UUID, b BLOB)", "presto": "CREATE TABLE x (a UUID, b VARBINARY)", "hive": "CREATE TABLE x (a UUID, b BINARY)", "spark": "CREATE TABLE x (a UUID, b BINARY)", }, ) with self.assertRaises(ParseError): transpile("CREATE TABLE products (price DECIMAL CHECK price > 0)", read="postgres") with self.assertRaises(ParseError): transpile( "CREATE TABLE products (price DECIMAL, CHECK price > 1)", read="postgres", ) def test_unnest(self): self.validate_identity( "SELECT * FROM UNNEST(ARRAY[1, 2], ARRAY['foo', 'bar', 'baz']) AS x(a, b)" ) self.validate_all( "SELECT UNNEST(c) FROM t", write={ "hive": "SELECT EXPLODE(c) FROM t", "postgres": "SELECT UNNEST(c) FROM t", "presto": "SELECT IF(_u.pos = _u_2.pos_2, _u_2.col) AS col FROM t CROSS JOIN UNNEST(SEQUENCE(1, GREATEST(CARDINALITY(c)))) AS _u(pos) CROSS JOIN UNNEST(c) WITH ORDINALITY AS _u_2(col, pos_2) WHERE _u.pos = _u_2.pos_2 OR (_u.pos > CARDINALITY(c) AND _u_2.pos_2 = CARDINALITY(c))", }, ) self.validate_all( "SELECT UNNEST(ARRAY[1])", write={ "hive": "SELECT EXPLODE(ARRAY(1))", "postgres": "SELECT UNNEST(ARRAY[1])", "presto": "SELECT IF(_u.pos = _u_2.pos_2, _u_2.col) AS col FROM UNNEST(SEQUENCE(1, GREATEST(CARDINALITY(ARRAY[1])))) AS _u(pos) CROSS JOIN UNNEST(ARRAY[1]) WITH ORDINALITY AS _u_2(col, pos_2) WHERE _u.pos = _u_2.pos_2 OR (_u.pos > CARDINALITY(ARRAY[1]) AND _u_2.pos_2 = CARDINALITY(ARRAY[1]))", }, ) def test_array_offset(self): with self.assertLogs(helper_logger) as cm: self.validate_all( "SELECT col[1]", write={ "bigquery": "SELECT col[0]", "duckdb": "SELECT col[1]", "hive": "SELECT col[0]", "postgres": "SELECT col[1]", "presto": "SELECT col[1]", }, ) self.assertEqual( cm.output, [ "WARNING:sqlglot:Applying array index offset (-1)", "WARNING:sqlglot:Applying array index offset (1)", "WARNING:sqlglot:Applying array index offset (1)", "WARNING:sqlglot:Applying array index offset (1)", ], ) def test_operator(self): expr = self.parse_one("1 OPERATOR(+) 2 OPERATOR(*) 3") expr.left.assert_is(exp.Operator) expr.left.left.assert_is(exp.Literal) expr.left.right.assert_is(exp.Literal) expr.right.assert_is(exp.Literal) self.assertEqual(expr.sql(dialect="postgres"), "1 OPERATOR(+) 2 OPERATOR(*) 3") self.validate_identity("SELECT operator FROM t") self.validate_identity("SELECT 1 OPERATOR(+) 2") self.validate_identity("SELECT 1 OPERATOR(+) /* foo */ 2") self.validate_identity("SELECT 1 OPERATOR(pg_catalog.+) 2") def test_bool_or(self): self.validate_identity( "SELECT a, LOGICAL_OR(b) FROM table GROUP BY a", "SELECT a, BOOL_OR(b) FROM table GROUP BY a", ) def test_string_concat(self): self.validate_identity("SELECT CONCAT('abcde', 2, NULL, 22)") self.validate_all( "CONCAT(a, b)", write={ "": "CONCAT(COALESCE(a, ''), COALESCE(b, ''))", "clickhouse": "CONCAT(COALESCE(a, ''), COALESCE(b, ''))", "duckdb": "CONCAT(a, b)", "postgres": "CONCAT(a, b)", "presto": "CONCAT(COALESCE(CAST(a AS VARCHAR), ''), COALESCE(CAST(b AS VARCHAR), ''))", }, ) self.validate_all( "a || b", write={ "": "a || b", "clickhouse": "a || b", "duckdb": "a || b", "postgres": "a || b", "presto": "CONCAT(CAST(a AS VARCHAR), CAST(b AS VARCHAR))", }, ) def test_variance(self): self.validate_identity( "VAR_SAMP(x)", "VAR_SAMP(x)", ) self.validate_identity( "VAR_POP(x)", "VAR_POP(x)", ) self.validate_identity( "VARIANCE(x)", "VAR_SAMP(x)", ) self.validate_all( "VAR_POP(x)", read={ "": "VARIANCE_POP(x)", }, write={ "postgres": "VAR_POP(x)", }, ) def test_regexp_binary(self): """See https://github.com/tobymao/sqlglot/pull/2404 for details.""" self.assertIsInstance(self.parse_one("'thomas' ~ '.*thomas.*'"), exp.Binary) self.assertIsInstance(self.parse_one("'thomas' ~* '.*thomas.*'"), exp.Binary) def test_unnest_json_array(self): trino_input = """ WITH t(boxcrate) AS ( SELECT JSON '[{"boxes": [{"name": "f1", "type": "plant", "color": "red"}]}]' ) SELECT JSON_EXTRACT_SCALAR(boxes,'$.name') AS name, JSON_EXTRACT_SCALAR(boxes,'$.type') AS type, JSON_EXTRACT_SCALAR(boxes,'$.color') AS color FROM t CROSS JOIN UNNEST(CAST(boxcrate AS array(json))) AS x(tbox) CROSS JOIN UNNEST(CAST(json_extract(tbox, '$.boxes') AS array(json))) AS y(boxes) """ expected_postgres = """WITH t(boxcrate) AS ( SELECT CAST('[{"boxes": [{"name": "f1", "type": "plant", "color": "red"}]}]' AS JSON) ) SELECT JSON_EXTRACT_PATH_TEXT(boxes, 'name') AS name, JSON_EXTRACT_PATH_TEXT(boxes, 'type') AS type, JSON_EXTRACT_PATH_TEXT(boxes, 'color') AS color FROM t CROSS JOIN JSON_ARRAY_ELEMENTS(CAST(boxcrate AS JSON)) AS x(tbox) CROSS JOIN JSON_ARRAY_ELEMENTS(CAST(JSON_EXTRACT_PATH(tbox, 'boxes') AS JSON)) AS y(boxes)""" self.validate_all(expected_postgres, read={"trino": trino_input}, pretty=True)