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-rw-r--r--tests/dialects/test_dialect.py981
1 files changed, 981 insertions, 0 deletions
diff --git a/tests/dialects/test_dialect.py b/tests/dialects/test_dialect.py
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--- /dev/null
+++ b/tests/dialects/test_dialect.py
@@ -0,0 +1,981 @@
+import unittest
+
+from sqlglot import (
+ Dialect,
+ Dialects,
+ ErrorLevel,
+ UnsupportedError,
+ parse_one,
+ transpile,
+)
+
+
+class Validator(unittest.TestCase):
+ dialect = None
+
+ def validate(self, sql, target, **kwargs):
+ self.assertEqual(transpile(sql, **kwargs)[0], target)
+
+ def validate_identity(self, sql):
+ self.assertEqual(transpile(sql, read=self.dialect, write=self.dialect)[0], sql)
+
+ def validate_all(self, sql, read=None, write=None, pretty=False):
+ """
+ Validate that:
+ 1. Everything in `read` transpiles to `sql`
+ 2. `sql` transpiles to everything in `write`
+
+ Args:
+ sql (str): Main SQL expression
+ dialect (str): dialect of `sql`
+ read (dict): Mapping of dialect -> SQL
+ write (dict): Mapping of dialect -> SQL
+ """
+ expression = parse_one(sql, read=self.dialect)
+
+ for read_dialect, read_sql in (read or {}).items():
+ with self.subTest(f"{read_dialect} -> {sql}"):
+ self.assertEqual(
+ parse_one(read_sql, read_dialect).sql(
+ self.dialect, unsupported_level=ErrorLevel.IGNORE
+ ),
+ sql,
+ )
+
+ for write_dialect, write_sql in (write or {}).items():
+ with self.subTest(f"{sql} -> {write_dialect}"):
+ if write_sql is UnsupportedError:
+ with self.assertRaises(UnsupportedError):
+ expression.sql(
+ write_dialect, unsupported_level=ErrorLevel.RAISE
+ )
+ else:
+ self.assertEqual(
+ expression.sql(
+ write_dialect,
+ unsupported_level=ErrorLevel.IGNORE,
+ pretty=pretty,
+ ),
+ write_sql,
+ )
+
+
+class TestDialect(Validator):
+ maxDiff = None
+
+ def test_enum(self):
+ for dialect in Dialects:
+ self.assertIsNotNone(Dialect[dialect])
+ self.assertIsNotNone(Dialect.get(dialect))
+ self.assertIsNotNone(Dialect.get_or_raise(dialect))
+ self.assertIsNotNone(Dialect[dialect.value])
+
+ def test_cast(self):
+ self.validate_all(
+ "CAST(a AS TEXT)",
+ write={
+ "bigquery": "CAST(a AS STRING)",
+ "clickhouse": "CAST(a AS TEXT)",
+ "duckdb": "CAST(a AS TEXT)",
+ "mysql": "CAST(a AS TEXT)",
+ "hive": "CAST(a AS STRING)",
+ "oracle": "CAST(a AS CLOB)",
+ "postgres": "CAST(a AS TEXT)",
+ "presto": "CAST(a AS VARCHAR)",
+ "snowflake": "CAST(a AS TEXT)",
+ "spark": "CAST(a AS STRING)",
+ "starrocks": "CAST(a AS STRING)",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS STRING)",
+ write={
+ "bigquery": "CAST(a AS STRING)",
+ "duckdb": "CAST(a AS TEXT)",
+ "mysql": "CAST(a AS TEXT)",
+ "hive": "CAST(a AS STRING)",
+ "oracle": "CAST(a AS CLOB)",
+ "postgres": "CAST(a AS TEXT)",
+ "presto": "CAST(a AS VARCHAR)",
+ "snowflake": "CAST(a AS TEXT)",
+ "spark": "CAST(a AS STRING)",
+ "starrocks": "CAST(a AS STRING)",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS VARCHAR)",
+ write={
+ "bigquery": "CAST(a AS STRING)",
+ "duckdb": "CAST(a AS TEXT)",
+ "mysql": "CAST(a AS VARCHAR)",
+ "hive": "CAST(a AS STRING)",
+ "oracle": "CAST(a AS VARCHAR2)",
+ "postgres": "CAST(a AS VARCHAR)",
+ "presto": "CAST(a AS VARCHAR)",
+ "snowflake": "CAST(a AS VARCHAR)",
+ "spark": "CAST(a AS STRING)",
+ "starrocks": "CAST(a AS VARCHAR)",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS VARCHAR(3))",
+ write={
+ "bigquery": "CAST(a AS STRING(3))",
+ "duckdb": "CAST(a AS TEXT(3))",
+ "mysql": "CAST(a AS VARCHAR(3))",
+ "hive": "CAST(a AS VARCHAR(3))",
+ "oracle": "CAST(a AS VARCHAR2(3))",
+ "postgres": "CAST(a AS VARCHAR(3))",
+ "presto": "CAST(a AS VARCHAR(3))",
+ "snowflake": "CAST(a AS VARCHAR(3))",
+ "spark": "CAST(a AS VARCHAR(3))",
+ "starrocks": "CAST(a AS VARCHAR(3))",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS SMALLINT)",
+ write={
+ "bigquery": "CAST(a AS INT64)",
+ "duckdb": "CAST(a AS SMALLINT)",
+ "mysql": "CAST(a AS SMALLINT)",
+ "hive": "CAST(a AS SMALLINT)",
+ "oracle": "CAST(a AS NUMBER)",
+ "postgres": "CAST(a AS SMALLINT)",
+ "presto": "CAST(a AS SMALLINT)",
+ "snowflake": "CAST(a AS SMALLINT)",
+ "spark": "CAST(a AS SHORT)",
+ "sqlite": "CAST(a AS INTEGER)",
+ "starrocks": "CAST(a AS SMALLINT)",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS DOUBLE)",
+ write={
+ "bigquery": "CAST(a AS FLOAT64)",
+ "clickhouse": "CAST(a AS DOUBLE)",
+ "duckdb": "CAST(a AS DOUBLE)",
+ "mysql": "CAST(a AS DOUBLE)",
+ "hive": "CAST(a AS DOUBLE)",
+ "oracle": "CAST(a AS DOUBLE PRECISION)",
+ "postgres": "CAST(a AS DOUBLE PRECISION)",
+ "presto": "CAST(a AS DOUBLE)",
+ "snowflake": "CAST(a AS DOUBLE)",
+ "spark": "CAST(a AS DOUBLE)",
+ "starrocks": "CAST(a AS DOUBLE)",
+ },
+ )
+ self.validate_all(
+ "CAST(a AS TIMESTAMP)", write={"starrocks": "CAST(a AS DATETIME)"}
+ )
+ self.validate_all(
+ "CAST(a AS TIMESTAMPTZ)", write={"starrocks": "CAST(a AS DATETIME)"}
+ )
+ self.validate_all("CAST(a AS TINYINT)", write={"oracle": "CAST(a AS NUMBER)"})
+ self.validate_all("CAST(a AS SMALLINT)", write={"oracle": "CAST(a AS NUMBER)"})
+ self.validate_all("CAST(a AS BIGINT)", write={"oracle": "CAST(a AS NUMBER)"})
+ self.validate_all("CAST(a AS INT)", write={"oracle": "CAST(a AS NUMBER)"})
+ self.validate_all(
+ "CAST(a AS DECIMAL)",
+ read={"oracle": "CAST(a AS NUMBER)"},
+ write={"oracle": "CAST(a AS NUMBER)"},
+ )
+
+ def test_time(self):
+ self.validate_all(
+ "STR_TO_TIME(x, '%Y-%m-%dT%H:%M:%S')",
+ read={
+ "duckdb": "STRPTIME(x, '%Y-%m-%dT%H:%M:%S')",
+ },
+ write={
+ "mysql": "STR_TO_DATE(x, '%Y-%m-%dT%H:%i:%S')",
+ "duckdb": "STRPTIME(x, '%Y-%m-%dT%H:%M:%S')",
+ "hive": "CAST(FROM_UNIXTIME(UNIX_TIMESTAMP(x, 'yyyy-MM-ddTHH:mm:ss')) AS TIMESTAMP)",
+ "presto": "DATE_PARSE(x, '%Y-%m-%dT%H:%i:%S')",
+ "spark": "TO_TIMESTAMP(x, 'yyyy-MM-ddTHH:mm:ss')",
+ },
+ )
+ self.validate_all(
+ "STR_TO_TIME('2020-01-01', '%Y-%m-%d')",
+ write={
+ "duckdb": "STRPTIME('2020-01-01', '%Y-%m-%d')",
+ "hive": "CAST('2020-01-01' AS TIMESTAMP)",
+ "presto": "DATE_PARSE('2020-01-01', '%Y-%m-%d')",
+ "spark": "TO_TIMESTAMP('2020-01-01', 'yyyy-MM-dd')",
+ },
+ )
+ self.validate_all(
+ "STR_TO_TIME(x, '%y')",
+ write={
+ "duckdb": "STRPTIME(x, '%y')",
+ "hive": "CAST(FROM_UNIXTIME(UNIX_TIMESTAMP(x, 'yy')) AS TIMESTAMP)",
+ "presto": "DATE_PARSE(x, '%y')",
+ "spark": "TO_TIMESTAMP(x, 'yy')",
+ },
+ )
+ self.validate_all(
+ "STR_TO_UNIX('2020-01-01', '%Y-%M-%d')",
+ write={
+ "duckdb": "EPOCH(STRPTIME('2020-01-01', '%Y-%M-%d'))",
+ "hive": "UNIX_TIMESTAMP('2020-01-01', 'yyyy-mm-dd')",
+ "presto": "TO_UNIXTIME(DATE_PARSE('2020-01-01', '%Y-%i-%d'))",
+ },
+ )
+ self.validate_all(
+ "TIME_STR_TO_DATE('2020-01-01')",
+ write={
+ "duckdb": "CAST('2020-01-01' AS DATE)",
+ "hive": "TO_DATE('2020-01-01')",
+ "presto": "DATE_PARSE('2020-01-01', '%Y-%m-%d %H:%i:%s')",
+ },
+ )
+ self.validate_all(
+ "TIME_STR_TO_TIME('2020-01-01')",
+ write={
+ "duckdb": "CAST('2020-01-01' AS TIMESTAMP)",
+ "hive": "CAST('2020-01-01' AS TIMESTAMP)",
+ "presto": "DATE_PARSE('2020-01-01', '%Y-%m-%d %H:%i:%s')",
+ },
+ )
+ self.validate_all(
+ "TIME_STR_TO_UNIX('2020-01-01')",
+ write={
+ "duckdb": "EPOCH(CAST('2020-01-01' AS TIMESTAMP))",
+ "hive": "UNIX_TIMESTAMP('2020-01-01')",
+ "presto": "TO_UNIXTIME(DATE_PARSE('2020-01-01', '%Y-%m-%d %H:%i:%S'))",
+ },
+ )
+ self.validate_all(
+ "TIME_TO_STR(x, '%Y-%m-%d')",
+ write={
+ "duckdb": "STRFTIME(x, '%Y-%m-%d')",
+ "hive": "DATE_FORMAT(x, 'yyyy-MM-dd')",
+ "presto": "DATE_FORMAT(x, '%Y-%m-%d')",
+ },
+ )
+ self.validate_all(
+ "TIME_TO_TIME_STR(x)",
+ write={
+ "duckdb": "CAST(x AS TEXT)",
+ "hive": "CAST(x AS STRING)",
+ "presto": "CAST(x AS VARCHAR)",
+ },
+ )
+ self.validate_all(
+ "TIME_TO_UNIX(x)",
+ write={
+ "duckdb": "EPOCH(x)",
+ "hive": "UNIX_TIMESTAMP(x)",
+ "presto": "TO_UNIXTIME(x)",
+ },
+ )
+ self.validate_all(
+ "TS_OR_DS_TO_DATE_STR(x)",
+ write={
+ "duckdb": "SUBSTRING(CAST(x AS TEXT), 1, 10)",
+ "hive": "SUBSTRING(CAST(x AS STRING), 1, 10)",
+ "presto": "SUBSTRING(CAST(x AS VARCHAR), 1, 10)",
+ },
+ )
+ self.validate_all(
+ "TS_OR_DS_TO_DATE(x)",
+ write={
+ "duckdb": "CAST(x AS DATE)",
+ "hive": "TO_DATE(x)",
+ "presto": "CAST(SUBSTR(CAST(x AS VARCHAR), 1, 10) AS DATE)",
+ },
+ )
+ self.validate_all(
+ "TS_OR_DS_TO_DATE(x, '%-d')",
+ write={
+ "duckdb": "CAST(STRPTIME(x, '%-d') AS DATE)",
+ "hive": "TO_DATE(x, 'd')",
+ "presto": "CAST(DATE_PARSE(x, '%e') AS DATE)",
+ "spark": "TO_DATE(x, 'd')",
+ },
+ )
+ self.validate_all(
+ "UNIX_TO_STR(x, y)",
+ write={
+ "duckdb": "STRFTIME(TO_TIMESTAMP(CAST(x AS BIGINT)), y)",
+ "hive": "FROM_UNIXTIME(x, y)",
+ "presto": "DATE_FORMAT(FROM_UNIXTIME(x), y)",
+ },
+ )
+ self.validate_all(
+ "UNIX_TO_TIME(x)",
+ write={
+ "duckdb": "TO_TIMESTAMP(CAST(x AS BIGINT))",
+ "hive": "FROM_UNIXTIME(x)",
+ "presto": "FROM_UNIXTIME(x)",
+ },
+ )
+ self.validate_all(
+ "UNIX_TO_TIME_STR(x)",
+ write={
+ "duckdb": "CAST(TO_TIMESTAMP(CAST(x AS BIGINT)) AS TEXT)",
+ "hive": "FROM_UNIXTIME(x)",
+ "presto": "CAST(FROM_UNIXTIME(x) AS VARCHAR)",
+ },
+ )
+ self.validate_all(
+ "DATE_TO_DATE_STR(x)",
+ write={
+ "duckdb": "CAST(x AS TEXT)",
+ "hive": "CAST(x AS STRING)",
+ "presto": "CAST(x AS VARCHAR)",
+ },
+ )
+ self.validate_all(
+ "DATE_TO_DI(x)",
+ write={
+ "duckdb": "CAST(STRFTIME(x, '%Y%m%d') AS INT)",
+ "hive": "CAST(DATE_FORMAT(x, 'yyyyMMdd') AS INT)",
+ "presto": "CAST(DATE_FORMAT(x, '%Y%m%d') AS INT)",
+ },
+ )
+ self.validate_all(
+ "DI_TO_DATE(x)",
+ write={
+ "duckdb": "CAST(STRPTIME(CAST(x AS TEXT), '%Y%m%d') AS DATE)",
+ "hive": "TO_DATE(CAST(x AS STRING), 'yyyyMMdd')",
+ "presto": "CAST(DATE_PARSE(CAST(x AS VARCHAR), '%Y%m%d') AS DATE)",
+ },
+ )
+ self.validate_all(
+ "TS_OR_DI_TO_DI(x)",
+ write={
+ "duckdb": "CAST(SUBSTR(REPLACE(CAST(x AS TEXT), '-', ''), 1, 8) AS INT)",
+ "hive": "CAST(SUBSTR(REPLACE(CAST(x AS STRING), '-', ''), 1, 8) AS INT)",
+ "presto": "CAST(SUBSTR(REPLACE(CAST(x AS VARCHAR), '-', ''), 1, 8) AS INT)",
+ "spark": "CAST(SUBSTR(REPLACE(CAST(x AS STRING), '-', ''), 1, 8) AS INT)",
+ },
+ )
+ self.validate_all(
+ "DATE_ADD(x, 1, 'day')",
+ read={
+ "mysql": "DATE_ADD(x, INTERVAL 1 DAY)",
+ "starrocks": "DATE_ADD(x, INTERVAL 1 DAY)",
+ },
+ write={
+ "bigquery": "DATE_ADD(x, INTERVAL 1 'day')",
+ "duckdb": "x + INTERVAL 1 day",
+ "hive": "DATE_ADD(x, 1)",
+ "mysql": "DATE_ADD(x, INTERVAL 1 DAY)",
+ "postgres": "x + INTERVAL '1' 'day'",
+ "presto": "DATE_ADD('day', 1, x)",
+ "spark": "DATE_ADD(x, 1)",
+ "starrocks": "DATE_ADD(x, INTERVAL 1 DAY)",
+ },
+ )
+ self.validate_all(
+ "DATE_ADD(x, y, 'day')",
+ write={
+ "postgres": UnsupportedError,
+ },
+ )
+ self.validate_all(
+ "DATE_ADD(x, 1)",
+ write={
+ "bigquery": "DATE_ADD(x, INTERVAL 1 'day')",
+ "duckdb": "x + INTERVAL 1 DAY",
+ "hive": "DATE_ADD(x, 1)",
+ "mysql": "DATE_ADD(x, INTERVAL 1 DAY)",
+ "presto": "DATE_ADD('day', 1, x)",
+ "spark": "DATE_ADD(x, 1)",
+ "starrocks": "DATE_ADD(x, INTERVAL 1 DAY)",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'day')",
+ write={
+ "mysql": "DATE(x)",
+ "starrocks": "DATE(x)",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'week')",
+ write={
+ "mysql": "STR_TO_DATE(CONCAT(YEAR(x), ' ', WEEK(x, 1), ' 1'), '%Y %u %w')",
+ "starrocks": "STR_TO_DATE(CONCAT(YEAR(x), ' ', WEEK(x, 1), ' 1'), '%Y %u %w')",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'month')",
+ write={
+ "mysql": "STR_TO_DATE(CONCAT(YEAR(x), ' ', MONTH(x), ' 1'), '%Y %c %e')",
+ "starrocks": "STR_TO_DATE(CONCAT(YEAR(x), ' ', MONTH(x), ' 1'), '%Y %c %e')",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'quarter')",
+ write={
+ "mysql": "STR_TO_DATE(CONCAT(YEAR(x), ' ', QUARTER(x) * 3 - 2, ' 1'), '%Y %c %e')",
+ "starrocks": "STR_TO_DATE(CONCAT(YEAR(x), ' ', QUARTER(x) * 3 - 2, ' 1'), '%Y %c %e')",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'year')",
+ write={
+ "mysql": "STR_TO_DATE(CONCAT(YEAR(x), ' 1 1'), '%Y %c %e')",
+ "starrocks": "STR_TO_DATE(CONCAT(YEAR(x), ' 1 1'), '%Y %c %e')",
+ },
+ )
+ self.validate_all(
+ "DATE_TRUNC(x, 'millenium')",
+ write={
+ "mysql": UnsupportedError,
+ "starrocks": UnsupportedError,
+ },
+ )
+ self.validate_all(
+ "STR_TO_DATE(x, '%Y-%m-%dT%H:%M:%S')",
+ read={
+ "mysql": "STR_TO_DATE(x, '%Y-%m-%dT%H:%i:%S')",
+ "starrocks": "STR_TO_DATE(x, '%Y-%m-%dT%H:%i:%S')",
+ },
+ write={
+ "mysql": "STR_TO_DATE(x, '%Y-%m-%dT%H:%i:%S')",
+ "starrocks": "STR_TO_DATE(x, '%Y-%m-%dT%H:%i:%S')",
+ "hive": "CAST(FROM_UNIXTIME(UNIX_TIMESTAMP(x, 'yyyy-MM-ddTHH:mm:ss')) AS DATE)",
+ "presto": "CAST(DATE_PARSE(x, '%Y-%m-%dT%H:%i:%S') AS DATE)",
+ "spark": "TO_DATE(x, 'yyyy-MM-ddTHH:mm:ss')",
+ },
+ )
+ self.validate_all(
+ "STR_TO_DATE(x, '%Y-%m-%d')",
+ write={
+ "mysql": "STR_TO_DATE(x, '%Y-%m-%d')",
+ "starrocks": "STR_TO_DATE(x, '%Y-%m-%d')",
+ "hive": "CAST(x AS DATE)",
+ "presto": "CAST(DATE_PARSE(x, '%Y-%m-%d') AS DATE)",
+ "spark": "TO_DATE(x)",
+ },
+ )
+ self.validate_all(
+ "DATE_STR_TO_DATE(x)",
+ write={
+ "duckdb": "CAST(x AS DATE)",
+ "hive": "TO_DATE(x)",
+ "presto": "CAST(DATE_PARSE(x, '%Y-%m-%d') AS DATE)",
+ "spark": "TO_DATE(x)",
+ },
+ )
+ self.validate_all(
+ "TS_OR_DS_ADD('2021-02-01', 1, 'DAY')",
+ write={
+ "duckdb": "CAST('2021-02-01' AS DATE) + INTERVAL 1 DAY",
+ "hive": "DATE_ADD('2021-02-01', 1)",
+ "presto": "DATE_ADD('DAY', 1, DATE_PARSE(SUBSTR('2021-02-01', 1, 10), '%Y-%m-%d'))",
+ "spark": "DATE_ADD('2021-02-01', 1)",
+ },
+ )
+ self.validate_all(
+ "DATE_ADD(CAST('2020-01-01' AS DATE), 1)",
+ write={
+ "duckdb": "CAST('2020-01-01' AS DATE) + INTERVAL 1 DAY",
+ "hive": "DATE_ADD(CAST('2020-01-01' AS DATE), 1)",
+ "presto": "DATE_ADD('day', 1, CAST('2020-01-01' AS DATE))",
+ "spark": "DATE_ADD(CAST('2020-01-01' AS DATE), 1)",
+ },
+ )
+
+ for unit in ("DAY", "MONTH", "YEAR"):
+ self.validate_all(
+ f"{unit}(x)",
+ read={
+ dialect: f"{unit}(x)"
+ for dialect in (
+ "bigquery",
+ "duckdb",
+ "mysql",
+ "presto",
+ "starrocks",
+ )
+ },
+ write={
+ dialect: f"{unit}(x)"
+ for dialect in (
+ "bigquery",
+ "duckdb",
+ "mysql",
+ "presto",
+ "hive",
+ "spark",
+ "starrocks",
+ )
+ },
+ )
+
+ def test_array(self):
+ self.validate_all(
+ "ARRAY(0, 1, 2)",
+ write={
+ "bigquery": "[0, 1, 2]",
+ "duckdb": "LIST_VALUE(0, 1, 2)",
+ "presto": "ARRAY[0, 1, 2]",
+ "spark": "ARRAY(0, 1, 2)",
+ },
+ )
+ self.validate_all(
+ "ARRAY_SIZE(x)",
+ write={
+ "bigquery": "ARRAY_LENGTH(x)",
+ "duckdb": "ARRAY_LENGTH(x)",
+ "presto": "CARDINALITY(x)",
+ "spark": "SIZE(x)",
+ },
+ )
+ self.validate_all(
+ "ARRAY_SUM(ARRAY(1, 2))",
+ write={
+ "trino": "REDUCE(ARRAY[1, 2], 0, (acc, x) -> acc + x, acc -> acc)",
+ "duckdb": "LIST_SUM(LIST_VALUE(1, 2))",
+ "hive": "ARRAY_SUM(ARRAY(1, 2))",
+ "presto": "ARRAY_SUM(ARRAY[1, 2])",
+ "spark": "AGGREGATE(ARRAY(1, 2), 0, (acc, x) -> acc + x, acc -> acc)",
+ },
+ )
+ self.validate_all(
+ "REDUCE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ write={
+ "trino": "REDUCE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ "duckdb": "REDUCE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ "hive": "REDUCE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ "presto": "REDUCE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ "spark": "AGGREGATE(x, 0, (acc, x) -> acc + x, acc -> acc)",
+ },
+ )
+
+ def test_order_by(self):
+ self.validate_all(
+ "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
+ write={
+ "bigquery": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname",
+ "duckdb": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname",
+ "presto": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname, lname NULLS FIRST",
+ "hive": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname",
+ "spark": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname",
+ },
+ )
+
+ def test_json(self):
+ self.validate_all(
+ "JSON_EXTRACT(x, 'y')",
+ read={
+ "postgres": "x->'y'",
+ "presto": "JSON_EXTRACT(x, 'y')",
+ },
+ write={
+ "postgres": "x->'y'",
+ "presto": "JSON_EXTRACT(x, 'y')",
+ },
+ )
+ self.validate_all(
+ "JSON_EXTRACT_SCALAR(x, 'y')",
+ read={
+ "postgres": "x->>'y'",
+ "presto": "JSON_EXTRACT_SCALAR(x, 'y')",
+ },
+ write={
+ "postgres": "x->>'y'",
+ "presto": "JSON_EXTRACT_SCALAR(x, 'y')",
+ },
+ )
+ self.validate_all(
+ "JSONB_EXTRACT(x, 'y')",
+ read={
+ "postgres": "x#>'y'",
+ },
+ write={
+ "postgres": "x#>'y'",
+ },
+ )
+ self.validate_all(
+ "JSONB_EXTRACT_SCALAR(x, 'y')",
+ read={
+ "postgres": "x#>>'y'",
+ },
+ write={
+ "postgres": "x#>>'y'",
+ },
+ )
+
+ def test_cross_join(self):
+ self.validate_all(
+ "SELECT a FROM x CROSS JOIN UNNEST(y) AS t (a)",
+ write={
+ "presto": "SELECT a FROM x CROSS JOIN UNNEST(y) AS t(a)",
+ "spark": "SELECT a FROM x LATERAL VIEW EXPLODE(y) t AS a",
+ },
+ )
+ self.validate_all(
+ "SELECT a, b FROM x CROSS JOIN UNNEST(y, z) AS t (a, b)",
+ write={
+ "presto": "SELECT a, b FROM x CROSS JOIN UNNEST(y, z) AS t(a, b)",
+ "spark": "SELECT a, b FROM x LATERAL VIEW EXPLODE(y) t AS a LATERAL VIEW EXPLODE(z) t AS b",
+ },
+ )
+ self.validate_all(
+ "SELECT a FROM x CROSS JOIN UNNEST(y) WITH ORDINALITY AS t (a)",
+ write={
+ "presto": "SELECT a FROM x CROSS JOIN UNNEST(y) WITH ORDINALITY AS t(a)",
+ "spark": "SELECT a FROM x LATERAL VIEW POSEXPLODE(y) t AS a",
+ },
+ )
+
+ def test_set_operators(self):
+ self.validate_all(
+ "SELECT * FROM a UNION SELECT * FROM b",
+ read={
+ "bigquery": "SELECT * FROM a UNION DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a UNION SELECT * FROM b",
+ "presto": "SELECT * FROM a UNION SELECT * FROM b",
+ "spark": "SELECT * FROM a UNION SELECT * FROM b",
+ },
+ write={
+ "bigquery": "SELECT * FROM a UNION DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a UNION SELECT * FROM b",
+ "presto": "SELECT * FROM a UNION SELECT * FROM b",
+ "spark": "SELECT * FROM a UNION SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a UNION ALL SELECT * FROM b",
+ read={
+ "bigquery": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "duckdb": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "presto": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "spark": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ },
+ write={
+ "bigquery": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "duckdb": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "presto": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ "spark": "SELECT * FROM a UNION ALL SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a INTERSECT SELECT * FROM b",
+ read={
+ "bigquery": "SELECT * FROM a INTERSECT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "presto": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "spark": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ },
+ write={
+ "bigquery": "SELECT * FROM a INTERSECT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "presto": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "spark": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a EXCEPT SELECT * FROM b",
+ read={
+ "bigquery": "SELECT * FROM a EXCEPT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "presto": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "spark": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ },
+ write={
+ "bigquery": "SELECT * FROM a EXCEPT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "presto": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "spark": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a UNION DISTINCT SELECT * FROM b",
+ write={
+ "bigquery": "SELECT * FROM a UNION DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a UNION SELECT * FROM b",
+ "presto": "SELECT * FROM a UNION SELECT * FROM b",
+ "spark": "SELECT * FROM a UNION SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a INTERSECT DISTINCT SELECT * FROM b",
+ write={
+ "bigquery": "SELECT * FROM a INTERSECT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "presto": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ "spark": "SELECT * FROM a INTERSECT SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
+ write={
+ "bigquery": "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
+ "duckdb": "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
+ "presto": "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
+ "spark": "SELECT * FROM a INTERSECT ALL SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a EXCEPT DISTINCT SELECT * FROM b",
+ write={
+ "bigquery": "SELECT * FROM a EXCEPT DISTINCT SELECT * FROM b",
+ "duckdb": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "presto": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ "spark": "SELECT * FROM a EXCEPT SELECT * FROM b",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
+ read={
+ "bigquery": "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
+ "duckdb": "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
+ "presto": "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
+ "spark": "SELECT * FROM a EXCEPT ALL SELECT * FROM b",
+ },
+ )
+
+ def test_operators(self):
+ self.validate_all(
+ "x ILIKE '%y'",
+ read={
+ "clickhouse": "x ILIKE '%y'",
+ "duckdb": "x ILIKE '%y'",
+ "postgres": "x ILIKE '%y'",
+ "snowflake": "x ILIKE '%y'",
+ },
+ write={
+ "bigquery": "LOWER(x) LIKE '%y'",
+ "clickhouse": "x ILIKE '%y'",
+ "duckdb": "x ILIKE '%y'",
+ "hive": "LOWER(x) LIKE '%y'",
+ "mysql": "LOWER(x) LIKE '%y'",
+ "oracle": "LOWER(x) LIKE '%y'",
+ "postgres": "x ILIKE '%y'",
+ "presto": "LOWER(x) LIKE '%y'",
+ "snowflake": "x ILIKE '%y'",
+ "spark": "LOWER(x) LIKE '%y'",
+ "sqlite": "LOWER(x) LIKE '%y'",
+ "starrocks": "LOWER(x) LIKE '%y'",
+ "trino": "LOWER(x) LIKE '%y'",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM a ORDER BY col_a NULLS LAST",
+ write={
+ "mysql": UnsupportedError,
+ "starrocks": UnsupportedError,
+ },
+ )
+ self.validate_all(
+ "STR_POSITION(x, 'a')",
+ write={
+ "duckdb": "STRPOS(x, 'a')",
+ "presto": "STRPOS(x, 'a')",
+ "spark": "LOCATE('a', x)",
+ },
+ )
+ self.validate_all(
+ "CONCAT_WS('-', 'a', 'b')",
+ write={
+ "duckdb": "CONCAT_WS('-', 'a', 'b')",
+ "presto": "ARRAY_JOIN(ARRAY['a', 'b'], '-')",
+ "hive": "CONCAT_WS('-', 'a', 'b')",
+ "spark": "CONCAT_WS('-', 'a', 'b')",
+ },
+ )
+
+ self.validate_all(
+ "CONCAT_WS('-', x)",
+ write={
+ "duckdb": "CONCAT_WS('-', x)",
+ "presto": "ARRAY_JOIN(x, '-')",
+ "hive": "CONCAT_WS('-', x)",
+ "spark": "CONCAT_WS('-', x)",
+ },
+ )
+ self.validate_all(
+ "IF(x > 1, 1, 0)",
+ write={
+ "duckdb": "CASE WHEN x > 1 THEN 1 ELSE 0 END",
+ "presto": "IF(x > 1, 1, 0)",
+ "hive": "IF(x > 1, 1, 0)",
+ "spark": "IF(x > 1, 1, 0)",
+ "tableau": "IF x > 1 THEN 1 ELSE 0 END",
+ },
+ )
+ self.validate_all(
+ "CASE WHEN 1 THEN x ELSE 0 END",
+ write={
+ "duckdb": "CASE WHEN 1 THEN x ELSE 0 END",
+ "presto": "CASE WHEN 1 THEN x ELSE 0 END",
+ "hive": "CASE WHEN 1 THEN x ELSE 0 END",
+ "spark": "CASE WHEN 1 THEN x ELSE 0 END",
+ "tableau": "CASE WHEN 1 THEN x ELSE 0 END",
+ },
+ )
+ self.validate_all(
+ "x[y]",
+ write={
+ "duckdb": "x[y]",
+ "presto": "x[y]",
+ "hive": "x[y]",
+ "spark": "x[y]",
+ },
+ )
+ self.validate_all(
+ """'["x"]'""",
+ write={
+ "duckdb": """'["x"]'""",
+ "presto": """'["x"]'""",
+ "hive": """'["x"]'""",
+ "spark": """'["x"]'""",
+ },
+ )
+
+ self.validate_all(
+ 'true or null as "foo"',
+ write={
+ "bigquery": "TRUE OR NULL AS `foo`",
+ "duckdb": 'TRUE OR NULL AS "foo"',
+ "presto": 'TRUE OR NULL AS "foo"',
+ "hive": "TRUE OR NULL AS `foo`",
+ "spark": "TRUE OR NULL AS `foo`",
+ },
+ )
+ self.validate_all(
+ "SELECT IF(COALESCE(bar, 0) = 1, TRUE, FALSE) as foo FROM baz",
+ write={
+ "bigquery": "SELECT CASE WHEN COALESCE(bar, 0) = 1 THEN TRUE ELSE FALSE END AS foo FROM baz",
+ "duckdb": "SELECT CASE WHEN COALESCE(bar, 0) = 1 THEN TRUE ELSE FALSE END AS foo FROM baz",
+ "presto": "SELECT IF(COALESCE(bar, 0) = 1, TRUE, FALSE) AS foo FROM baz",
+ "hive": "SELECT IF(COALESCE(bar, 0) = 1, TRUE, FALSE) AS foo FROM baz",
+ "spark": "SELECT IF(COALESCE(bar, 0) = 1, TRUE, FALSE) AS foo FROM baz",
+ },
+ )
+ self.validate_all(
+ "LEVENSHTEIN(col1, col2)",
+ write={
+ "duckdb": "LEVENSHTEIN(col1, col2)",
+ "presto": "LEVENSHTEIN_DISTANCE(col1, col2)",
+ "hive": "LEVENSHTEIN(col1, col2)",
+ "spark": "LEVENSHTEIN(col1, col2)",
+ },
+ )
+ self.validate_all(
+ "LEVENSHTEIN(coalesce(col1, col2), coalesce(col2, col1))",
+ write={
+ "duckdb": "LEVENSHTEIN(COALESCE(col1, col2), COALESCE(col2, col1))",
+ "presto": "LEVENSHTEIN_DISTANCE(COALESCE(col1, col2), COALESCE(col2, col1))",
+ "hive": "LEVENSHTEIN(COALESCE(col1, col2), COALESCE(col2, col1))",
+ "spark": "LEVENSHTEIN(COALESCE(col1, col2), COALESCE(col2, col1))",
+ },
+ )
+ self.validate_all(
+ "ARRAY_FILTER(the_array, x -> x > 0)",
+ write={
+ "presto": "FILTER(the_array, x -> x > 0)",
+ "hive": "FILTER(the_array, x -> x > 0)",
+ "spark": "FILTER(the_array, x -> x > 0)",
+ },
+ )
+ self.validate_all(
+ "SELECT a AS b FROM x GROUP BY b",
+ write={
+ "duckdb": "SELECT a AS b FROM x GROUP BY b",
+ "presto": "SELECT a AS b FROM x GROUP BY 1",
+ "hive": "SELECT a AS b FROM x GROUP BY 1",
+ "oracle": "SELECT a AS b FROM x GROUP BY 1",
+ "spark": "SELECT a AS b FROM x GROUP BY 1",
+ },
+ )
+ self.validate_all(
+ "SELECT x FROM y LIMIT 10",
+ write={
+ "sqlite": "SELECT x FROM y LIMIT 10",
+ "oracle": "SELECT x FROM y FETCH FIRST 10 ROWS ONLY",
+ },
+ )
+ self.validate_all(
+ "SELECT x FROM y LIMIT 10 OFFSET 5",
+ write={
+ "sqlite": "SELECT x FROM y LIMIT 10 OFFSET 5",
+ "oracle": "SELECT x FROM y OFFSET 5 ROWS FETCH FIRST 10 ROWS ONLY",
+ },
+ )
+ self.validate_all(
+ "SELECT x FROM y OFFSET 10 FETCH FIRST 3 ROWS ONLY",
+ write={
+ "oracle": "SELECT x FROM y OFFSET 10 ROWS FETCH FIRST 3 ROWS ONLY",
+ },
+ )
+ self.validate_all(
+ "SELECT x FROM y OFFSET 10 ROWS FETCH FIRST 3 ROWS ONLY",
+ write={
+ "oracle": "SELECT x FROM y OFFSET 10 ROWS FETCH FIRST 3 ROWS ONLY",
+ },
+ )
+ self.validate_all(
+ '"x" + "y"',
+ read={
+ "clickhouse": '`x` + "y"',
+ "sqlite": '`x` + "y"',
+ },
+ )
+ self.validate_all(
+ "[1, 2]",
+ write={
+ "bigquery": "[1, 2]",
+ "clickhouse": "[1, 2]",
+ },
+ )
+ self.validate_all(
+ "SELECT * FROM VALUES ('x'), ('y') AS t(z)",
+ write={
+ "spark": "SELECT * FROM (VALUES ('x'), ('y')) AS t(z)",
+ },
+ )
+ self.validate_all(
+ "CREATE TABLE t (c CHAR, nc NCHAR, v1 VARCHAR, v2 VARCHAR2, nv NVARCHAR, nv2 NVARCHAR2)",
+ write={
+ "hive": "CREATE TABLE t (c CHAR, nc CHAR, v1 STRING, v2 STRING, nv STRING, nv2 STRING)",
+ "oracle": "CREATE TABLE t (c CHAR, nc CHAR, v1 VARCHAR2, v2 VARCHAR2, nv NVARCHAR2, nv2 NVARCHAR2)",
+ "postgres": "CREATE TABLE t (c CHAR, nc CHAR, v1 VARCHAR, v2 VARCHAR, nv VARCHAR, nv2 VARCHAR)",
+ "sqlite": "CREATE TABLE t (c TEXT, nc TEXT, v1 TEXT, v2 TEXT, nv TEXT, nv2 TEXT)",
+ },
+ )
+ self.validate_all(
+ "POWER(1.2, 3.4)",
+ read={
+ "hive": "pow(1.2, 3.4)",
+ "postgres": "power(1.2, 3.4)",
+ },
+ )
+ self.validate_all(
+ "CREATE INDEX my_idx ON tbl (a, b)",
+ read={
+ "hive": "CREATE INDEX my_idx ON TABLE tbl (a, b)",
+ "sqlite": "CREATE INDEX my_idx ON tbl (a, b)",
+ },
+ write={
+ "hive": "CREATE INDEX my_idx ON TABLE tbl (a, b)",
+ "postgres": "CREATE INDEX my_idx ON tbl (a, b)",
+ "sqlite": "CREATE INDEX my_idx ON tbl (a, b)",
+ },
+ )
+ self.validate_all(
+ "CREATE UNIQUE INDEX my_idx ON tbl (a, b)",
+ read={
+ "hive": "CREATE UNIQUE INDEX my_idx ON TABLE tbl (a, b)",
+ "sqlite": "CREATE UNIQUE INDEX my_idx ON tbl (a, b)",
+ },
+ write={
+ "hive": "CREATE UNIQUE INDEX my_idx ON TABLE tbl (a, b)",
+ "postgres": "CREATE UNIQUE INDEX my_idx ON tbl (a, b)",
+ "sqlite": "CREATE UNIQUE INDEX my_idx ON tbl (a, b)",
+ },
+ )
+ self.validate_all(
+ "CREATE TABLE t (b1 BINARY, b2 BINARY(1024), c1 TEXT, c2 TEXT(1024))",
+ write={
+ "hive": "CREATE TABLE t (b1 BINARY, b2 BINARY(1024), c1 STRING, c2 STRING(1024))",
+ "oracle": "CREATE TABLE t (b1 BLOB, b2 BLOB(1024), c1 CLOB, c2 CLOB(1024))",
+ "postgres": "CREATE TABLE t (b1 BYTEA, b2 BYTEA(1024), c1 TEXT, c2 TEXT(1024))",
+ "sqlite": "CREATE TABLE t (b1 BLOB, b2 BLOB(1024), c1 TEXT, c2 TEXT(1024))",
+ },
+ )
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-05 19:57:57 +0000