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from tests.dialects.test_dialect import Validator
class TestRedshift(Validator):
dialect = "redshift"
def test_redshift(self):
self.validate_identity("SELECT * FROM #x")
self.validate_identity("SELECT INTERVAL '5 day'")
self.validate_identity("foo$")
self.validate_identity("$foo")
self.validate_all(
"SELECT SNAPSHOT",
write={
"": "SELECT SNAPSHOT",
"redshift": 'SELECT "SNAPSHOT"',
},
)
self.validate_all(
"SELECT SYSDATE",
write={
"": "SELECT CURRENT_TIMESTAMP()",
"postgres": "SELECT CURRENT_TIMESTAMP",
"redshift": "SELECT SYSDATE",
},
)
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 EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMPNTZ))",
},
)
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 EXTRACT(month FROM CAST('20220502' AS DATE))",
},
)
self.validate_all("SELECT INTERVAL '5 day'", read={"": "SELECT INTERVAL '5' days"})
self.validate_all("CONVERT(INTEGER, x)", write={"redshift": "CAST(x AS INTEGER)"})
self.validate_all(
"DATEADD('day', ndays, caldate)", write={"redshift": "DATEADD(day, ndays, caldate)"}
)
self.validate_all(
'create table "group" ("col" char(10))',
write={
"redshift": 'CREATE TABLE "group" ("col" CHAR(10))',
"mysql": "CREATE TABLE `group` (`col` CHAR(10))",
},
)
self.validate_all(
'create table if not exists city_slash_id("city/id" integer not null, state char(2) not null)',
write={
"redshift": 'CREATE TABLE IF NOT EXISTS city_slash_id ("city/id" INTEGER NOT NULL, state CHAR(2) NOT NULL)',
"presto": 'CREATE TABLE IF NOT EXISTS city_slash_id ("city/id" INTEGER NOT NULL, state CHAR(2) NOT NULL)',
},
)
self.validate_all(
"SELECT ST_AsEWKT(ST_GeomFromEWKT('SRID=4326;POINT(10 20)')::geography)",
write={
"redshift": "SELECT ST_ASEWKT(CAST(ST_GEOMFROMEWKT('SRID=4326;POINT(10 20)') AS GEOGRAPHY))",
"bigquery": "SELECT ST_ASEWKT(TRY_CAST(ST_GEOMFROMEWKT('SRID=4326;POINT(10 20)') AS GEOGRAPHY))",
},
)
self.validate_all(
"SELECT ST_AsEWKT(ST_GeogFromText('LINESTRING(110 40, 2 3, -10 80, -7 9)')::geometry)",
write={
"redshift": "SELECT ST_ASEWKT(CAST(ST_GEOGFROMTEXT('LINESTRING(110 40, 2 3, -10 80, -7 9)') AS GEOMETRY))",
},
)
self.validate_all(
"SELECT 'abc'::BINARY",
write={
"redshift": "SELECT CAST('abc' AS VARBYTE)",
},
)
self.validate_all(
"SELECT 'abc'::CHARACTER",
write={
"redshift": "SELECT CAST('abc' AS CHAR)",
},
)
self.validate_all(
"SELECT * FROM venue WHERE (venuecity, venuestate) IN (('Miami', 'FL'), ('Tampa', 'FL')) ORDER BY venueid",
write={
"redshift": "SELECT * FROM venue WHERE (venuecity, venuestate) IN (('Miami', 'FL'), ('Tampa', 'FL')) ORDER BY venueid",
},
)
self.validate_all(
'SELECT tablename, "column" FROM pg_table_def WHERE "column" LIKE \'%start\\_%\' LIMIT 5',
write={
"redshift": 'SELECT tablename, "column" FROM pg_table_def WHERE "column" LIKE \'%start\\_%\' LIMIT 5'
},
)
self.validate_all(
"SELECT DISTINCT ON (a) a, b FROM x ORDER BY c DESC",
write={
"redshift": 'SELECT a, b FROM (SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a ORDER BY c DESC) AS _row_number FROM x) WHERE "_row_number" = 1',
},
)
self.validate_all(
"DECODE(x, a, b, c, d)",
write={
"": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
"oracle": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
"redshift": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
"snowflake": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
"spark": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
},
)
self.validate_all(
"NVL(a, b, c, d)",
write={
"redshift": "COALESCE(a, b, c, d)",
"mysql": "COALESCE(a, b, c, d)",
"postgres": "COALESCE(a, b, c, d)",
},
)
self.validate_all(
"DATEDIFF('day', a, b)",
write={
"redshift": "DATEDIFF(day, a, b)",
"presto": "DATE_DIFF('day', a, b)",
},
)
self.validate_all(
"SELECT TOP 1 x FROM y",
write={
"redshift": "SELECT x FROM y LIMIT 1",
},
)
def test_identity(self):
self.validate_identity("CAST('bla' AS SUPER)")
self.validate_identity("CREATE TABLE real1 (realcol REAL)")
self.validate_identity("CAST('foo' AS HLLSKETCH)")
self.validate_identity("SELECT DATEADD(day, 1, 'today')")
self.validate_identity("'abc' SIMILAR TO '(b|c)%'")
self.validate_identity(
"SELECT caldate + INTERVAL '1 second' AS dateplus FROM date WHERE caldate = '12-31-2008'"
)
self.validate_identity("CREATE TABLE datetable (start_date DATE, end_date DATE)")
self.validate_identity(
"SELECT COUNT(*) FROM event WHERE eventname LIKE '%Ring%' OR eventname LIKE '%Die%'"
)
self.validate_identity(
"CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL"
)
self.validate_identity(
"CREATE TABLE sales (salesid INTEGER NOT NULL) DISTKEY(listid) COMPOUND SORTKEY(listid, sellerid) DISTSTYLE AUTO"
)
self.validate_identity(
"COPY customer FROM 's3://mybucket/customer' IAM_ROLE 'arn:aws:iam::0123456789012:role/MyRedshiftRole'"
)
self.validate_identity(
"UNLOAD ('select * from venue') TO 's3://mybucket/unload/' IAM_ROLE 'arn:aws:iam::0123456789012:role/MyRedshiftRole'"
)
self.validate_identity(
"CREATE TABLE SOUP (SOUP1 VARCHAR(50) NOT NULL ENCODE ZSTD, SOUP2 VARCHAR(70) NULL ENCODE DELTA)"
)
def test_values(self):
self.validate_all(
"SELECT a, b FROM (VALUES (1, 2)) AS t (a, b)",
write={
"redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b) AS t",
},
)
self.validate_all(
"SELECT a, b FROM (VALUES (1, 2), (3, 4)) AS t (a, b)",
write={
"redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4) AS t",
},
)
self.validate_all(
"SELECT a, b FROM (VALUES (1, 2), (3, 4), (5, 6), (7, 8)) AS t (a, b)",
write={
"redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4 UNION ALL SELECT 5, 6 UNION ALL SELECT 7, 8) AS t",
},
)
self.validate_all(
"INSERT INTO t(a) VALUES (1), (2), (3)",
write={
"redshift": "INSERT INTO t (a) VALUES (1), (2), (3)",
},
)
self.validate_all(
"INSERT INTO t(a, b) SELECT a, b FROM (VALUES (1, 2), (3, 4)) AS t (a, b)",
write={
"redshift": "INSERT INTO t (a, b) SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4) AS t",
},
)
self.validate_all(
"INSERT INTO t(a, b) VALUES (1, 2), (3, 4)",
write={
"redshift": "INSERT INTO t (a, b) VALUES (1, 2), (3, 4)",
},
)
def test_create_table_like(self):
self.validate_all(
"CREATE TABLE t1 LIKE t2",
write={
"redshift": "CREATE TABLE t1 (LIKE t2)",
},
)
self.validate_all(
"CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL",
write={
"redshift": "CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL",
},
)
def test_rename_table(self):
self.validate_all(
"ALTER TABLE db.t1 RENAME TO db.t2",
write={
"spark": "ALTER TABLE db.t1 RENAME TO db.t2",
"redshift": "ALTER TABLE db.t1 RENAME TO t2",
},
)
def test_varchar_max(self):
self.validate_all(
"CREATE TABLE TEST (cola VARCHAR(MAX))",
write={
"redshift": 'CREATE TABLE "TEST" ("cola" VARCHAR(MAX))',
},
identify=True,
)
def test_no_schema_binding(self):
self.validate_all(
"CREATE OR REPLACE VIEW v1 AS SELECT cola, colb FROM t1 WITH NO SCHEMA BINDING",
write={
"redshift": "CREATE OR REPLACE VIEW v1 AS SELECT cola, colb FROM t1 WITH NO SCHEMA BINDING",
},
)
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