605 lines
23 KiB
Python
605 lines
23 KiB
Python
from sqlglot import UnsupportedError
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from tests.dialects.test_dialect import Validator
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class TestSnowflake(Validator):
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dialect = "snowflake"
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def test_snowflake(self):
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self.validate_all(
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"SELECT * FROM xxx WHERE col ilike '%Don''t%'",
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write={
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"snowflake": "SELECT * FROM xxx WHERE col ILIKE '%Don\\'t%'",
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},
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)
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self.validate_all(
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"SELECT * EXCLUDE a, b FROM xxx",
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write={
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"snowflake": "SELECT * EXCLUDE (a, b) FROM xxx",
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},
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)
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self.validate_all(
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"SELECT * RENAME a AS b, c AS d FROM xxx",
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write={
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"snowflake": "SELECT * RENAME (a AS b, c AS d) FROM xxx",
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},
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)
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self.validate_all(
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"SELECT * EXCLUDE a, b RENAME (c AS d, E as F) FROM xxx",
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write={
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"snowflake": "SELECT * EXCLUDE (a, b) RENAME (c AS d, E AS F) FROM xxx",
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},
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)
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self.validate_all(
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'x:a:"b c"',
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write={
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"duckdb": "x['a']['b c']",
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"hive": "x['a']['b c']",
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"presto": "x['a']['b c']",
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"snowflake": "x['a']['b c']",
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"spark": "x['a']['b c']",
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},
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)
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self.validate_all(
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"SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
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write={
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"bigquery": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a NULLS LAST LIMIT 10",
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"snowflake": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
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},
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)
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self.validate_all(
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"SELECT a FROM test AS t QUALIFY ROW_NUMBER() OVER (PARTITION BY a ORDER BY Z) = 1",
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write={
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"bigquery": "SELECT a FROM test AS t QUALIFY ROW_NUMBER() OVER (PARTITION BY a ORDER BY Z NULLS LAST) = 1",
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"snowflake": "SELECT a FROM test AS t QUALIFY ROW_NUMBER() OVER (PARTITION BY a ORDER BY Z) = 1",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP(1659981729)",
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write={
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"bigquery": "SELECT UNIX_TO_TIME(1659981729)",
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"snowflake": "SELECT TO_TIMESTAMP(1659981729)",
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"spark": "SELECT FROM_UNIXTIME(1659981729)",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP(1659981729000, 3)",
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write={
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"bigquery": "SELECT UNIX_TO_TIME(1659981729000, 'millis')",
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"snowflake": "SELECT TO_TIMESTAMP(1659981729000, 3)",
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"spark": "SELECT TIMESTAMP_MILLIS(1659981729000)",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP('1659981729')",
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write={
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"bigquery": "SELECT UNIX_TO_TIME('1659981729')",
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"snowflake": "SELECT TO_TIMESTAMP('1659981729')",
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"spark": "SELECT FROM_UNIXTIME('1659981729')",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP(1659981729000000000, 9)",
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write={
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"bigquery": "SELECT UNIX_TO_TIME(1659981729000000000, 'micros')",
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"snowflake": "SELECT TO_TIMESTAMP(1659981729000000000, 9)",
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"spark": "SELECT TIMESTAMP_MICROS(1659981729000000000)",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP('2013-04-05 01:02:03')",
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write={
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"bigquery": "SELECT PARSE_TIMESTAMP('%Y-%m-%d %H:%M:%S', '2013-04-05 01:02:03')",
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"snowflake": "SELECT TO_TIMESTAMP('2013-04-05 01:02:03', 'yyyy-mm-dd hh24:mi:ss')",
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"spark": "SELECT TO_TIMESTAMP('2013-04-05 01:02:03', 'yyyy-MM-dd HH:mm:ss')",
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},
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)
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self.validate_all(
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"SELECT TO_TIMESTAMP('04/05/2013 01:02:03', 'mm/dd/yyyy hh24:mi:ss')",
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read={
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"bigquery": "SELECT PARSE_TIMESTAMP('%m/%d/%Y %H:%M:%S', '04/05/2013 01:02:03')",
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"duckdb": "SELECT STRPTIME('04/05/2013 01:02:03', '%m/%d/%Y %H:%M:%S')",
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"snowflake": "SELECT TO_TIMESTAMP('04/05/2013 01:02:03', 'mm/dd/yyyy hh24:mi:ss')",
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},
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write={
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"bigquery": "SELECT PARSE_TIMESTAMP('%m/%d/%Y %H:%M:%S', '04/05/2013 01:02:03')",
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"snowflake": "SELECT TO_TIMESTAMP('04/05/2013 01:02:03', 'mm/dd/yyyy hh24:mi:ss')",
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"spark": "SELECT TO_TIMESTAMP('04/05/2013 01:02:03', 'MM/dd/yyyy HH:mm:ss')",
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},
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)
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self.validate_all(
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"SELECT IFF(TRUE, 'true', 'false')",
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write={
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"snowflake": "SELECT IFF(TRUE, 'true', 'false')",
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},
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)
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self.validate_all(
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"SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
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write={
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"duckdb": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname NULLS LAST",
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"postgres": "SELECT fname, lname, age FROM person ORDER BY age DESC, fname, lname",
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"presto": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname, lname",
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"hive": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname NULLS LAST",
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"spark": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname NULLS LAST",
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"snowflake": "SELECT fname, lname, age FROM person ORDER BY age DESC, fname, lname",
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},
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)
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self.validate_all(
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"SELECT ARRAY_AGG(DISTINCT a)",
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write={
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"spark": "SELECT COLLECT_LIST(DISTINCT a)",
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"snowflake": "SELECT ARRAY_AGG(DISTINCT a)",
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},
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)
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self.validate_all(
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"SELECT * FROM a INTERSECT ALL SELECT * FROM b",
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write={
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"snowflake": UnsupportedError,
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},
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)
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self.validate_all(
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"SELECT * FROM a EXCEPT ALL SELECT * FROM b",
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write={
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"snowflake": UnsupportedError,
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},
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)
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self.validate_all(
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"SELECT ARRAY_UNION_AGG(a)",
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write={
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"snowflake": "SELECT ARRAY_UNION_AGG(a)",
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},
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)
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self.validate_all(
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"SELECT NVL2(a, b, c)",
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write={
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"snowflake": "SELECT NVL2(a, b, c)",
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},
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)
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self.validate_all(
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"SELECT $$a$$",
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write={
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"snowflake": "SELECT 'a'",
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},
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)
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self.validate_all(
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r"SELECT $$a ' \ \t \x21 z $ $$",
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write={
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"snowflake": r"SELECT 'a \' \\ \\t \\x21 z $ '",
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},
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)
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self.validate_identity("SELECT REGEXP_LIKE(a, b, c)")
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self.validate_all(
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"SELECT RLIKE(a, b)",
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write={
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"snowflake": "SELECT REGEXP_LIKE(a, b)",
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},
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)
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self.validate_all(
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"SELECT a FROM test SAMPLE BLOCK (0.5) SEED (42)",
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write={
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"snowflake": "SELECT a FROM test TABLESAMPLE BLOCK (0.5) SEED (42)",
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},
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)
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self.validate_all(
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"SELECT a FROM test pivot",
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write={
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"snowflake": "SELECT a FROM test AS pivot",
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},
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)
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self.validate_all(
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"SELECT a FROM test unpivot",
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write={
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"snowflake": "SELECT a FROM test AS unpivot",
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},
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)
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self.validate_all(
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"trim(date_column, 'UTC')",
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write={
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"bigquery": "TRIM(date_column, 'UTC')",
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"snowflake": "TRIM(date_column, 'UTC')",
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"postgres": "TRIM('UTC' FROM date_column)",
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},
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)
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self.validate_all(
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"trim(date_column)",
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write={
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"snowflake": "TRIM(date_column)",
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"bigquery": "TRIM(date_column)",
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},
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)
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self.validate_all(
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"DECODE(x, a, b, c, d)",
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read={
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"": "MATCHES(x, a, b, c, d)",
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},
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write={
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"": "MATCHES(x, a, b, c, d)",
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"oracle": "DECODE(x, a, b, c, d)",
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"snowflake": "DECODE(x, a, b, c, d)",
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},
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)
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def test_null_treatment(self):
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self.validate_all(
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r"SELECT FIRST_VALUE(TABLE1.COLUMN1) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1",
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write={
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"snowflake": r"SELECT FIRST_VALUE(TABLE1.COLUMN1) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1"
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},
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)
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self.validate_all(
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r"SELECT FIRST_VALUE(TABLE1.COLUMN1 RESPECT NULLS) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1",
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write={
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"snowflake": r"SELECT FIRST_VALUE(TABLE1.COLUMN1) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1"
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},
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)
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self.validate_all(
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r"SELECT FIRST_VALUE(TABLE1.COLUMN1) RESPECT NULLS OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1",
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write={
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"snowflake": r"SELECT FIRST_VALUE(TABLE1.COLUMN1) RESPECT NULLS OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1"
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},
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)
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self.validate_all(
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r"SELECT FIRST_VALUE(TABLE1.COLUMN1 IGNORE NULLS) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1",
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write={
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"snowflake": r"SELECT FIRST_VALUE(TABLE1.COLUMN1 IGNORE NULLS) OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1"
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},
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)
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self.validate_all(
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r"SELECT FIRST_VALUE(TABLE1.COLUMN1) IGNORE NULLS OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1",
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write={
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"snowflake": r"SELECT FIRST_VALUE(TABLE1.COLUMN1) IGNORE NULLS OVER (PARTITION BY RANDOM_COLUMN1, RANDOM_COLUMN2 ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS MY_ALIAS FROM TABLE1"
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},
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)
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def test_timestamps(self):
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self.validate_all(
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"SELECT CAST(a AS TIMESTAMP)",
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write={
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"snowflake": "SELECT CAST(a AS TIMESTAMPNTZ)",
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},
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)
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self.validate_all(
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"SELECT a::TIMESTAMP_LTZ(9)",
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write={
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"snowflake": "SELECT CAST(a AS TIMESTAMPLTZ(9))",
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},
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)
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self.validate_all(
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"SELECT a::TIMESTAMPLTZ",
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write={
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"snowflake": "SELECT CAST(a AS TIMESTAMPLTZ)",
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},
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)
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self.validate_all(
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"SELECT a::TIMESTAMP WITH LOCAL TIME ZONE",
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write={
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"snowflake": "SELECT CAST(a AS TIMESTAMPLTZ)",
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},
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)
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self.validate_identity("SELECT EXTRACT(month FROM a)")
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self.validate_all(
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"SELECT EXTRACT('month', a)",
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write={
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"snowflake": "SELECT EXTRACT('month' FROM a)",
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},
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)
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self.validate_all(
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"SELECT DATE_PART('month', a)",
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write={
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"snowflake": "SELECT EXTRACT('month' FROM a)",
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},
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)
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self.validate_all(
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"SELECT DATE_PART(month, a::DATETIME)",
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write={
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"snowflake": "SELECT EXTRACT(month FROM CAST(a AS DATETIME))",
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},
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)
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self.validate_all(
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"SELECT DATE_PART(epoch_second, foo) as ddate from table_name",
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write={
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"snowflake": "SELECT EXTRACT(epoch_second FROM CAST(foo AS TIMESTAMPNTZ)) AS ddate FROM table_name",
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"presto": "SELECT TO_UNIXTIME(CAST(foo AS TIMESTAMP)) AS ddate FROM table_name",
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},
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)
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self.validate_all(
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"SELECT DATE_PART(epoch_milliseconds, foo) as ddate from table_name",
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write={
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"snowflake": "SELECT EXTRACT(epoch_second FROM CAST(foo AS TIMESTAMPNTZ)) * 1000 AS ddate FROM table_name",
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"presto": "SELECT TO_UNIXTIME(CAST(foo AS TIMESTAMP)) * 1000 AS ddate FROM table_name",
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},
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)
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def test_semi_structured_types(self):
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self.validate_identity("SELECT CAST(a AS VARIANT)")
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self.validate_all(
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"SELECT a::VARIANT",
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write={
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"snowflake": "SELECT CAST(a AS VARIANT)",
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"tsql": "SELECT CAST(a AS SQL_VARIANT)",
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},
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)
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self.validate_identity("SELECT CAST(a AS ARRAY)")
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self.validate_all(
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"ARRAY_CONSTRUCT(0, 1, 2)",
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write={
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"snowflake": "[0, 1, 2]",
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"bigquery": "[0, 1, 2]",
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"duckdb": "LIST_VALUE(0, 1, 2)",
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"presto": "ARRAY[0, 1, 2]",
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"spark": "ARRAY(0, 1, 2)",
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},
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)
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self.validate_all(
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"SELECT a::OBJECT",
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write={
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"snowflake": "SELECT CAST(a AS OBJECT)",
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},
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)
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def test_ddl(self):
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self.validate_identity(
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"CREATE TABLE a (x DATE, y BIGINT) WITH (PARTITION BY (x), integration='q', auto_refresh=TRUE, file_format=(type = parquet))"
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)
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self.validate_identity("CREATE MATERIALIZED VIEW a COMMENT='...' AS SELECT 1 FROM x")
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self.validate_all(
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"CREATE OR REPLACE TRANSIENT TABLE a (id INT)",
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read={
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"postgres": "CREATE OR REPLACE TRANSIENT TABLE a (id INT)",
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"snowflake": "CREATE OR REPLACE TRANSIENT TABLE a (id INT)",
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},
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write={
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"postgres": "CREATE OR REPLACE TABLE a (id INT)",
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"mysql": "CREATE OR REPLACE TABLE a (id INT)",
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"snowflake": "CREATE OR REPLACE TRANSIENT TABLE a (id INT)",
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},
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)
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def test_user_defined_functions(self):
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self.validate_all(
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"CREATE FUNCTION a(x DATE, y BIGINT) RETURNS ARRAY LANGUAGE JAVASCRIPT AS $$ SELECT 1 $$",
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write={
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"snowflake": "CREATE FUNCTION a(x DATE, y BIGINT) RETURNS ARRAY LANGUAGE JAVASCRIPT AS ' SELECT 1 '",
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},
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)
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self.validate_all(
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"CREATE FUNCTION a() RETURNS TABLE (b INT) AS 'SELECT 1'",
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write={
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"snowflake": "CREATE FUNCTION a() RETURNS TABLE (b INT) AS 'SELECT 1'",
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"bigquery": "CREATE TABLE FUNCTION a() RETURNS TABLE <b INT64> AS SELECT 1",
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},
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)
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self.validate_all(
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"CREATE FUNCTION a() RETURNS INT IMMUTABLE AS 'SELECT 1'",
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write={
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"snowflake": "CREATE FUNCTION a() RETURNS INT IMMUTABLE AS 'SELECT 1'",
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},
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)
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def test_stored_procedures(self):
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self.validate_identity("CALL a.b.c(x, y)")
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self.validate_identity(
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"CREATE PROCEDURE a.b.c(x INT, y VARIANT) RETURNS OBJECT EXECUTE AS CALLER AS 'BEGIN SELECT 1; END;'"
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)
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def test_table_literal(self):
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# All examples from https://docs.snowflake.com/en/sql-reference/literals-table.html
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self.validate_all(
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r"""SELECT * FROM TABLE('MYTABLE')""",
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write={"snowflake": r"""SELECT * FROM TABLE('MYTABLE')"""},
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)
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self.validate_all(
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r"""SELECT * FROM TABLE('MYDB."MYSCHEMA"."MYTABLE"')""",
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write={"snowflake": r"""SELECT * FROM TABLE('MYDB."MYSCHEMA"."MYTABLE"')"""},
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)
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# Per Snowflake documentation at https://docs.snowflake.com/en/sql-reference/literals-table.html
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# one can use either a " ' " or " $$ " to enclose the object identifier.
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# Capturing the single tokens seems like lot of work. Hence adjusting tests to use these interchangeably,
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self.validate_all(
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r"""SELECT * FROM TABLE($$MYDB. "MYSCHEMA"."MYTABLE"$$)""",
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write={"snowflake": r"""SELECT * FROM TABLE('MYDB. "MYSCHEMA"."MYTABLE"')"""},
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)
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self.validate_all(
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r"""SELECT * FROM TABLE($MYVAR)""",
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write={"snowflake": r"""SELECT * FROM TABLE($MYVAR)"""},
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)
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self.validate_all(
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r"""SELECT * FROM TABLE(?)""",
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write={"snowflake": r"""SELECT * FROM TABLE(?)"""},
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)
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self.validate_all(
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r"""SELECT * FROM TABLE(:BINDING)""",
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write={"snowflake": r"""SELECT * FROM TABLE(:BINDING)"""},
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)
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self.validate_all(
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r"""SELECT * FROM TABLE($MYVAR) WHERE COL1 = 10""",
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write={"snowflake": r"""SELECT * FROM TABLE($MYVAR) WHERE COL1 = 10"""},
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)
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def test_flatten(self):
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self.validate_all(
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"""
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select
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dag_report.acct_id,
|
|
dag_report.report_date,
|
|
dag_report.report_uuid,
|
|
dag_report.airflow_name,
|
|
dag_report.dag_id,
|
|
f.value::varchar as operator
|
|
from cs.telescope.dag_report,
|
|
table(flatten(input=>split(operators, ','))) f
|
|
""",
|
|
write={
|
|
"snowflake": """SELECT
|
|
dag_report.acct_id,
|
|
dag_report.report_date,
|
|
dag_report.report_uuid,
|
|
dag_report.airflow_name,
|
|
dag_report.dag_id,
|
|
CAST(f.value AS VARCHAR) AS operator
|
|
FROM cs.telescope.dag_report, TABLE(FLATTEN(input => SPLIT(operators, ','))) AS f"""
|
|
},
|
|
pretty=True,
|
|
)
|
|
|
|
# All examples from https://docs.snowflake.com/en/sql-reference/functions/flatten.html#syntax
|
|
self.validate_all(
|
|
"SELECT * FROM TABLE(FLATTEN(input => parse_json('[1, ,77]'))) f",
|
|
write={
|
|
"snowflake": "SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('[1, ,77]'))) AS f"
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('{"a":1, "b":[77,88]}'), outer => true)) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('{"a":1, "b":[77,88]}'), outer => TRUE)) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('{"a":1, "b":[77,88]}'), path => 'b')) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('{"a":1, "b":[77,88]}'), path => 'b')) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('[]'))) f""",
|
|
write={"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('[]'))) AS f"""},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('[]'), outer => true)) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('[]'), outer => TRUE)) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('{"a":1, "b":[77,88], "c": {"d":"X"}}'))) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('{"a":1, "b":[77,88], "c": {"d":"X"}}'))) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('{"a":1, "b":[77,88], "c": {"d":"X"}}'), recursive => true)) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('{"a":1, "b":[77,88], "c": {"d":"X"}}'), recursive => TRUE)) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""SELECT * FROM TABLE(FLATTEN(input => parse_json('{"a":1, "b":[77,88], "c": {"d":"X"}}'), recursive => true, mode => 'object')) f""",
|
|
write={
|
|
"snowflake": """SELECT * FROM TABLE(FLATTEN(input => PARSE_JSON('{"a":1, "b":[77,88], "c": {"d":"X"}}'), recursive => TRUE, mode => 'object')) AS f"""
|
|
},
|
|
)
|
|
|
|
self.validate_all(
|
|
"""
|
|
SELECT id as "ID",
|
|
f.value AS "Contact",
|
|
f1.value:type AS "Type",
|
|
f1.value:content AS "Details"
|
|
FROM persons p,
|
|
lateral flatten(input => p.c, path => 'contact') f,
|
|
lateral flatten(input => f.value:business) f1
|
|
""",
|
|
write={
|
|
"snowflake": """SELECT
|
|
id AS "ID",
|
|
f.value AS "Contact",
|
|
f1.value['type'] AS "Type",
|
|
f1.value['content'] AS "Details"
|
|
FROM persons AS p, LATERAL FLATTEN(input => p.c, path => 'contact') AS f, LATERAL FLATTEN(input => f.value['business']) AS f1""",
|
|
},
|
|
pretty=True,
|
|
)
|
|
|
|
def test_minus(self):
|
|
self.validate_all(
|
|
"SELECT 1 EXCEPT SELECT 1",
|
|
read={
|
|
"oracle": "SELECT 1 MINUS SELECT 1",
|
|
"snowflake": "SELECT 1 MINUS SELECT 1",
|
|
},
|
|
)
|
|
|
|
def test_values(self):
|
|
self.validate_all(
|
|
'SELECT c0, c1 FROM (VALUES (1, 2), (3, 4)) AS "t0"(c0, c1)',
|
|
read={
|
|
"spark": "SELECT `c0`, `c1` FROM (VALUES (1, 2), (3, 4)) AS `t0`(`c0`, `c1`)",
|
|
},
|
|
)
|
|
|
|
def test_describe_table(self):
|
|
self.validate_all(
|
|
"DESCRIBE TABLE db.table",
|
|
write={
|
|
"snowflake": "DESCRIBE TABLE db.table",
|
|
"spark": "DESCRIBE db.table",
|
|
},
|
|
)
|
|
self.validate_all(
|
|
"DESCRIBE db.table",
|
|
write={
|
|
"snowflake": "DESCRIBE TABLE db.table",
|
|
"spark": "DESCRIBE db.table",
|
|
},
|
|
)
|
|
self.validate_all(
|
|
"DESC TABLE db.table",
|
|
write={
|
|
"snowflake": "DESCRIBE TABLE db.table",
|
|
"spark": "DESCRIBE db.table",
|
|
},
|
|
)
|
|
self.validate_all(
|
|
"DESC VIEW db.table",
|
|
write={
|
|
"snowflake": "DESCRIBE VIEW db.table",
|
|
"spark": "DESCRIBE db.table",
|
|
},
|
|
)
|
|
|
|
def test_match_recognize(self):
|
|
for row in (
|
|
"ONE ROW PER MATCH",
|
|
"ALL ROWS PER MATCH",
|
|
"ALL ROWS PER MATCH SHOW EMPTY MATCHES",
|
|
"ALL ROWS PER MATCH OMIT EMPTY MATCHES",
|
|
"ALL ROWS PER MATCH WITH UNMATCHED ROWS",
|
|
):
|
|
for after in (
|
|
"AFTER MATCH SKIP",
|
|
"AFTER MATCH SKIP PAST LAST ROW",
|
|
"AFTER MATCH SKIP TO NEXT ROW",
|
|
"AFTER MATCH SKIP TO FIRST x",
|
|
"AFTER MATCH SKIP TO LAST x",
|
|
):
|
|
self.validate_identity(
|
|
f"""SELECT
|
|
*
|
|
FROM x
|
|
MATCH_RECOGNIZE (
|
|
PARTITION BY a, b
|
|
ORDER BY
|
|
x DESC
|
|
MEASURES y AS b
|
|
{row}
|
|
{after}
|
|
PATTERN (^ S1 S2*? ( {{- S3 -}} S4 )+ | PERMUTE(S1, S2){{1,2}} $)
|
|
DEFINE x AS y
|
|
)""",
|
|
pretty=True,
|
|
)
|