Adding upstream version 20.1.0.
Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
parent
6a89523da4
commit
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GPG key ID:
FBB4F0E80A80222F
127 changed files with 73384 additions and 73067 deletions
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@ -7,9 +7,10 @@ from sqlglot import (
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ParseError,
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TokenError,
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UnsupportedError,
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exp,
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parse_one,
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)
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from sqlglot.dialects import Hive
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from sqlglot.dialects import BigQuery, Hive, Snowflake
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class Validator(unittest.TestCase):
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@ -78,9 +79,56 @@ class TestDialect(Validator):
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self.assertIsNotNone(Dialect[dialect.value])
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def test_get_or_raise(self):
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self.assertEqual(Dialect.get_or_raise(Hive), Hive)
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self.assertEqual(Dialect.get_or_raise(Hive()), Hive)
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self.assertEqual(Dialect.get_or_raise("hive"), Hive)
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self.assertIsInstance(Dialect.get_or_raise(Hive), Hive)
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self.assertIsInstance(Dialect.get_or_raise(Hive()), Hive)
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self.assertIsInstance(Dialect.get_or_raise("hive"), Hive)
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with self.assertRaises(ValueError):
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Dialect.get_or_raise(1)
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default_mysql = Dialect.get_or_raise("mysql")
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self.assertEqual(default_mysql.normalization_strategy, "CASE_SENSITIVE")
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lowercase_mysql = Dialect.get_or_raise("mysql,normalization_strategy=lowercase")
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self.assertEqual(lowercase_mysql.normalization_strategy, "LOWERCASE")
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lowercase_mysql = Dialect.get_or_raise("mysql, normalization_strategy = lowercase")
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self.assertEqual(lowercase_mysql.normalization_strategy.value, "LOWERCASE")
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with self.assertRaises(ValueError) as cm:
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Dialect.get_or_raise("mysql, normalization_strategy")
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self.assertEqual(
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str(cm.exception),
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"Invalid dialect format: 'mysql, normalization_strategy'. "
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"Please use the correct format: 'dialect [, k1 = v2 [, ...]]'.",
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)
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def test_compare_dialects(self):
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bigquery_class = Dialect["bigquery"]
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bigquery_object = BigQuery()
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bigquery_string = "bigquery"
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snowflake_class = Dialect["snowflake"]
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snowflake_object = Snowflake()
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snowflake_string = "snowflake"
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self.assertEqual(snowflake_class, snowflake_class)
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self.assertEqual(snowflake_class, snowflake_object)
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self.assertEqual(snowflake_class, snowflake_string)
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self.assertEqual(snowflake_object, snowflake_object)
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self.assertEqual(snowflake_object, snowflake_string)
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self.assertNotEqual(snowflake_class, bigquery_class)
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self.assertNotEqual(snowflake_class, bigquery_object)
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self.assertNotEqual(snowflake_class, bigquery_string)
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self.assertNotEqual(snowflake_object, bigquery_object)
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self.assertNotEqual(snowflake_object, bigquery_string)
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self.assertTrue(snowflake_class in {"snowflake", "bigquery"})
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self.assertTrue(snowflake_object in {"snowflake", "bigquery"})
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self.assertFalse(snowflake_class in {"bigquery", "redshift"})
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self.assertFalse(snowflake_object in {"bigquery", "redshift"})
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def test_cast(self):
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self.validate_all(
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@ -561,6 +609,7 @@ class TestDialect(Validator):
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self.validate_all(
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"TIME_TO_STR(x, '%Y-%m-%d')",
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write={
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"bigquery": "FORMAT_DATE('%Y-%m-%d', x)",
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"drill": "TO_CHAR(x, 'yyyy-MM-dd')",
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"duckdb": "STRFTIME(x, '%Y-%m-%d')",
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"hive": "DATE_FORMAT(x, 'yyyy-MM-dd')",
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@ -866,9 +915,9 @@ class TestDialect(Validator):
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write={
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"drill": "CAST(x AS DATE)",
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"duckdb": "CAST(x AS DATE)",
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"hive": "TO_DATE(x)",
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"presto": "CAST(DATE_PARSE(x, '%Y-%m-%d') AS DATE)",
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"spark": "TO_DATE(x)",
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"hive": "CAST(x AS DATE)",
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"presto": "CAST(x AS DATE)",
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"spark": "CAST(x AS DATE)",
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"sqlite": "x",
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},
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)
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@ -893,7 +942,7 @@ class TestDialect(Validator):
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self.validate_all(
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"TS_OR_DS_ADD(CURRENT_DATE, 1, 'DAY')",
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write={
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"presto": "DATE_ADD('DAY', 1, CURRENT_DATE)",
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"presto": "DATE_ADD('DAY', 1, CAST(CAST(CURRENT_DATE AS TIMESTAMP) AS DATE))",
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"hive": "DATE_ADD(CURRENT_DATE, 1)",
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},
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)
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@ -1268,13 +1317,6 @@ class TestDialect(Validator):
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"doris": "LOWER(x) LIKE '%y'",
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},
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)
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self.validate_all(
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"SELECT * FROM a ORDER BY col_a NULLS LAST",
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write={
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"mysql": UnsupportedError,
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"starrocks": UnsupportedError,
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},
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)
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self.validate_all(
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"POSITION(needle in haystack)",
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write={
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@ -1315,35 +1357,37 @@ class TestDialect(Validator):
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self.validate_all(
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"CONCAT_WS('-', 'a', 'b')",
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write={
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"clickhouse": "CONCAT_WS('-', 'a', 'b')",
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"duckdb": "CONCAT_WS('-', 'a', 'b')",
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"presto": "CONCAT_WS('-', 'a', 'b')",
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"presto": "CONCAT_WS('-', CAST('a' AS VARCHAR), CAST('b' AS VARCHAR))",
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"hive": "CONCAT_WS('-', 'a', 'b')",
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"spark": "CONCAT_WS('-', 'a', 'b')",
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"trino": "CONCAT_WS('-', 'a', 'b')",
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"trino": "CONCAT_WS('-', CAST('a' AS VARCHAR), CAST('b' AS VARCHAR))",
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},
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)
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self.validate_all(
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"CONCAT_WS('-', x)",
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write={
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"clickhouse": "CONCAT_WS('-', x)",
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"duckdb": "CONCAT_WS('-', x)",
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"hive": "CONCAT_WS('-', x)",
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"presto": "CONCAT_WS('-', x)",
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"presto": "CONCAT_WS('-', CAST(x AS VARCHAR))",
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"spark": "CONCAT_WS('-', x)",
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"trino": "CONCAT_WS('-', x)",
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"trino": "CONCAT_WS('-', CAST(x AS VARCHAR))",
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},
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)
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self.validate_all(
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"CONCAT(a)",
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write={
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"clickhouse": "a",
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"presto": "a",
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"trino": "a",
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"clickhouse": "CONCAT(a)",
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"presto": "CAST(a AS VARCHAR)",
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"trino": "CAST(a AS VARCHAR)",
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"tsql": "a",
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},
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)
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self.validate_all(
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"COALESCE(CAST(a AS TEXT), '')",
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"CONCAT(COALESCE(a, ''))",
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read={
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"drill": "CONCAT(a)",
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"duckdb": "CONCAT(a)",
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@ -1442,6 +1486,76 @@ class TestDialect(Validator):
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"spark": "FILTER(the_array, x -> x > 0)",
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},
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)
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self.validate_all(
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"a / b",
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write={
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"bigquery": "a / b",
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"clickhouse": "a / b",
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"databricks": "a / b",
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"duckdb": "a / b",
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"hive": "a / b",
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"mysql": "a / b",
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"oracle": "a / b",
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"snowflake": "a / b",
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"spark": "a / b",
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"starrocks": "a / b",
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"drill": "CAST(a AS DOUBLE) / b",
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"postgres": "CAST(a AS DOUBLE PRECISION) / b",
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"presto": "CAST(a AS DOUBLE) / b",
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"redshift": "CAST(a AS DOUBLE PRECISION) / b",
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"sqlite": "CAST(a AS REAL) / b",
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"teradata": "CAST(a AS DOUBLE) / b",
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"trino": "CAST(a AS DOUBLE) / b",
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"tsql": "CAST(a AS FLOAT) / b",
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},
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)
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def test_typeddiv(self):
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typed_div = exp.Div(this=exp.column("a"), expression=exp.column("b"), typed=True)
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div = exp.Div(this=exp.column("a"), expression=exp.column("b"))
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typed_div_dialect = "presto"
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div_dialect = "hive"
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INT = exp.DataType.Type.INT
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FLOAT = exp.DataType.Type.FLOAT
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for expression, types, dialect, expected in [
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(typed_div, (None, None), typed_div_dialect, "a / b"),
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(typed_div, (None, None), div_dialect, "a / b"),
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(div, (None, None), typed_div_dialect, "CAST(a AS DOUBLE) / b"),
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(div, (None, None), div_dialect, "a / b"),
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(typed_div, (INT, INT), typed_div_dialect, "a / b"),
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(typed_div, (INT, INT), div_dialect, "CAST(a / b AS BIGINT)"),
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(div, (INT, INT), typed_div_dialect, "CAST(a AS DOUBLE) / b"),
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(div, (INT, INT), div_dialect, "a / b"),
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(typed_div, (FLOAT, FLOAT), typed_div_dialect, "a / b"),
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(typed_div, (FLOAT, FLOAT), div_dialect, "a / b"),
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(div, (FLOAT, FLOAT), typed_div_dialect, "a / b"),
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(div, (FLOAT, FLOAT), div_dialect, "a / b"),
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(typed_div, (INT, FLOAT), typed_div_dialect, "a / b"),
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(typed_div, (INT, FLOAT), div_dialect, "a / b"),
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(div, (INT, FLOAT), typed_div_dialect, "a / b"),
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(div, (INT, FLOAT), div_dialect, "a / b"),
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]:
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with self.subTest(f"{expression.__class__.__name__} {types} {dialect} -> {expected}"):
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expression = expression.copy()
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expression.left.type = types[0]
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expression.right.type = types[1]
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self.assertEqual(expected, expression.sql(dialect=dialect))
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def test_safediv(self):
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safe_div = exp.Div(this=exp.column("a"), expression=exp.column("b"), safe=True)
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div = exp.Div(this=exp.column("a"), expression=exp.column("b"))
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safe_div_dialect = "mysql"
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div_dialect = "snowflake"
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for expression, dialect, expected in [
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(safe_div, safe_div_dialect, "a / b"),
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(safe_div, div_dialect, "a / NULLIF(b, 0)"),
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(div, safe_div_dialect, "a / b"),
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(div, div_dialect, "a / b"),
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]:
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with self.subTest(f"{expression.__class__.__name__} {dialect} -> {expected}"):
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self.assertEqual(expected, expression.sql(dialect=dialect))
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def test_limit(self):
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self.validate_all(
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@ -1547,7 +1661,7 @@ class TestDialect(Validator):
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"CREATE TABLE t (b1 BINARY, b2 BINARY(1024), c1 TEXT, c2 TEXT(1024))",
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write={
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"duckdb": "CREATE TABLE t (b1 BLOB, b2 BLOB(1024), c1 TEXT, c2 TEXT(1024))",
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"hive": "CREATE TABLE t (b1 BINARY, b2 BINARY(1024), c1 STRING, c2 STRING(1024))",
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"hive": "CREATE TABLE t (b1 BINARY, b2 BINARY(1024), c1 STRING, c2 VARCHAR(1024))",
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"oracle": "CREATE TABLE t (b1 BLOB, b2 BLOB(1024), c1 CLOB, c2 CLOB(1024))",
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"postgres": "CREATE TABLE t (b1 BYTEA, b2 BYTEA(1024), c1 TEXT, c2 TEXT(1024))",
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"sqlite": "CREATE TABLE t (b1 BLOB, b2 BLOB(1024), c1 TEXT, c2 TEXT(1024))",
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@ -1864,7 +1978,7 @@ SELECT
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write={
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"bigquery": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"clickhouse": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"databricks": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"databricks": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c FROM t) AS subq",
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"duckdb": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"hive": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c FROM t) AS subq",
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"mysql": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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@ -1872,11 +1986,11 @@ SELECT
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"presto": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"redshift": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"snowflake": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"spark": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"spark": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c FROM t) AS subq",
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"spark2": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c FROM t) AS subq",
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"sqlite": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"trino": "SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq",
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"tsql": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c FROM t) AS subq",
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"tsql": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT c AS c FROM t) AS subq",
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},
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)
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self.validate_all(
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@ -1885,13 +1999,60 @@ SELECT
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"bigquery": "SELECT * FROM (SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq1) AS subq2",
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"duckdb": "SELECT * FROM (SELECT * FROM (WITH t AS (SELECT 1 AS c) SELECT c FROM t) AS subq1) AS subq2",
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"hive": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT * FROM (SELECT c FROM t) AS subq1) AS subq2",
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"tsql": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT * FROM (SELECT c FROM t) AS subq1) AS subq2",
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"tsql": "WITH t AS (SELECT 1 AS c) SELECT * FROM (SELECT * FROM (SELECT c AS c FROM t) AS subq1) AS subq2",
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},
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)
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self.validate_all(
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"WITH t1(x) AS (SELECT 1) SELECT * FROM (WITH t2(y) AS (SELECT 2) SELECT y FROM t2) AS subq",
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write={
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"duckdb": "WITH t1(x) AS (SELECT 1) SELECT * FROM (WITH t2(y) AS (SELECT 2) SELECT y FROM t2) AS subq",
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"tsql": "WITH t1(x) AS (SELECT 1), t2(y) AS (SELECT 2) SELECT * FROM (SELECT y FROM t2) AS subq",
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"tsql": "WITH t1(x) AS (SELECT 1), t2(y) AS (SELECT 2) SELECT * FROM (SELECT y AS y FROM t2) AS subq",
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},
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)
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def test_unsupported_null_ordering(self):
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# We'll transpile a portable query from the following dialects to MySQL / T-SQL, which
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# both treat NULLs as small values, so the expected output queries should be equivalent
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with_last_nulls = "duckdb"
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with_small_nulls = "spark"
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with_large_nulls = "postgres"
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sql = "SELECT * FROM t ORDER BY c"
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sql_nulls_last = "SELECT * FROM t ORDER BY CASE WHEN c IS NULL THEN 1 ELSE 0 END, c"
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sql_nulls_first = "SELECT * FROM t ORDER BY CASE WHEN c IS NULL THEN 1 ELSE 0 END DESC, c"
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for read_dialect, desc, nulls_first, expected_sql in (
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(with_last_nulls, False, None, sql_nulls_last),
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(with_last_nulls, True, None, sql),
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(with_last_nulls, False, True, sql),
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(with_last_nulls, True, True, sql_nulls_first),
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(with_last_nulls, False, False, sql_nulls_last),
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(with_last_nulls, True, False, sql),
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(with_small_nulls, False, None, sql),
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(with_small_nulls, True, None, sql),
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(with_small_nulls, False, True, sql),
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(with_small_nulls, True, True, sql_nulls_first),
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(with_small_nulls, False, False, sql_nulls_last),
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(with_small_nulls, True, False, sql),
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(with_large_nulls, False, None, sql_nulls_last),
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(with_large_nulls, True, None, sql_nulls_first),
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(with_large_nulls, False, True, sql),
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(with_large_nulls, True, True, sql_nulls_first),
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(with_large_nulls, False, False, sql_nulls_last),
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(with_large_nulls, True, False, sql),
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):
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with self.subTest(
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f"read: {read_dialect}, descending: {desc}, nulls first: {nulls_first}"
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):
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sort_order = " DESC" if desc else ""
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null_order = (
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" NULLS FIRST"
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if nulls_first
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else (" NULLS LAST" if nulls_first is not None else "")
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)
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expected_sql = f"{expected_sql}{sort_order}"
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expression = parse_one(f"{sql}{sort_order}{null_order}", read=read_dialect)
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self.assertEqual(expression.sql(dialect="mysql"), expected_sql)
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self.assertEqual(expression.sql(dialect="tsql"), expected_sql)
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