from sqlglot import ErrorLevel, ParseError, UnsupportedError, transpile
from tests.dialects.test_dialect import Validator
class TestBigQuery(Validator):
dialect = "bigquery"
def test_bigquery(self):
self.validate_all(
'"""x"""',
write={
"bigquery": "'x'",
"duckdb": "'x'",
"presto": "'x'",
"hive": "'x'",
"spark": "'x'",
},
)
self.validate_all(
'"""x\'"""',
write={
"bigquery": "'x\\''",
"duckdb": "'x'''",
"presto": "'x'''",
"hive": "'x\\''",
"spark": "'x\\''",
},
)
self.validate_all(
r'r"""/\*.*\*/"""',
write={
"bigquery": r"'/\\*.*\\*/'",
"duckdb": r"'/\*.*\*/'",
"presto": r"'/\*.*\*/'",
"hive": r"'/\\*.*\\*/'",
"spark": r"'/\\*.*\\*/'",
},
)
self.validate_all(
R'R"""/\*.*\*/"""',
write={
"bigquery": R"'/\\*.*\\*/'",
"duckdb": R"'/\*.*\*/'",
"presto": R"'/\*.*\*/'",
"hive": R"'/\\*.*\\*/'",
"spark": R"'/\\*.*\\*/'",
},
)
self.validate_all(
"CAST(a AS INT64)",
write={
"bigquery": "CAST(a AS INT64)",
"duckdb": "CAST(a AS BIGINT)",
"presto": "CAST(a AS BIGINT)",
"hive": "CAST(a AS BIGINT)",
"spark": "CAST(a AS LONG)",
},
)
self.validate_all(
"CAST(a AS NUMERIC)",
write={
"bigquery": "CAST(a AS NUMERIC)",
"duckdb": "CAST(a AS DECIMAL)",
"presto": "CAST(a AS DECIMAL)",
"hive": "CAST(a AS DECIMAL)",
"spark": "CAST(a AS DECIMAL)",
},
)
self.validate_all(
"[1, 2, 3]",
read={
"duckdb": "LIST_VALUE(1, 2, 3)",
"presto": "ARRAY[1, 2, 3]",
"hive": "ARRAY(1, 2, 3)",
"spark": "ARRAY(1, 2, 3)",
},
write={
"bigquery": "[1, 2, 3]",
"duckdb": "LIST_VALUE(1, 2, 3)",
"presto": "ARRAY[1, 2, 3]",
"hive": "ARRAY(1, 2, 3)",
"spark": "ARRAY(1, 2, 3)",
},
)
self.validate_all(
"SELECT * FROM UNNEST(['7', '14']) AS x",
read={
"spark": "SELECT * FROM UNNEST(ARRAY('7', '14')) AS (x)",
},
write={
"bigquery": "SELECT * FROM UNNEST(['7', '14']) AS x",
"presto": "SELECT * FROM UNNEST(ARRAY['7', '14']) AS (x)",
"hive": "SELECT * FROM UNNEST(ARRAY('7', '14')) AS (x)",
"spark": "SELECT * FROM UNNEST(ARRAY('7', '14')) AS (x)",
},
)
self.validate_all(
"x IS unknown",
write={
"bigquery": "x IS NULL",
"duckdb": "x IS NULL",
"presto": "x IS NULL",
"hive": "x IS NULL",
"spark": "x IS NULL",
},
)
self.validate_all(
"current_datetime",
write={
"bigquery": "CURRENT_DATETIME()",
"duckdb": "CURRENT_DATETIME()",
"presto": "CURRENT_DATETIME()",
"hive": "CURRENT_DATETIME()",
"spark": "CURRENT_DATETIME()",
},
)
self.validate_all(
"current_time",
write={
"bigquery": "CURRENT_TIME()",
"duckdb": "CURRENT_TIME()",
"presto": "CURRENT_TIME()",
"hive": "CURRENT_TIME()",
"spark": "CURRENT_TIME()",
},
)
self.validate_all(
"current_timestamp",
write={
"bigquery": "CURRENT_TIMESTAMP()",
"duckdb": "CURRENT_TIMESTAMP()",
"postgres": "CURRENT_TIMESTAMP",
"presto": "CURRENT_TIMESTAMP()",
"hive": "CURRENT_TIMESTAMP()",
"spark": "CURRENT_TIMESTAMP()",
},
)
self.validate_all(
"current_timestamp()",
write={
"bigquery": "CURRENT_TIMESTAMP()",
"duckdb": "CURRENT_TIMESTAMP()",
"postgres": "CURRENT_TIMESTAMP",
"presto": "CURRENT_TIMESTAMP()",
"hive": "CURRENT_TIMESTAMP()",
"spark": "CURRENT_TIMESTAMP()",
},
)
self.validate_identity(
"SELECT ROW() OVER (y ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING) FROM x WINDOW y AS (PARTITION BY CATEGORY)"
)
self.validate_identity(
"SELECT LAST_VALUE(a IGNORE NULLS) OVER y FROM x WINDOW y AS (PARTITION BY CATEGORY)",
)
self.validate_all(
"CREATE TABLE db.example_table (col_a struct<struct_col_a:int, struct_col_b:string>)",
write={
"bigquery": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRING>)",
"duckdb": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT, struct_col_b TEXT>)",
"presto": "CREATE TABLE db.example_table (col_a ROW(struct_col_a INTEGER, struct_col_b VARCHAR))",
"hive": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT, struct_col_b STRING>)",
"spark": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a: INT, struct_col_b: STRING>)",
},
)
self.validate_all(
"CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
write={
"bigquery": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a INT64, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
"presto": "CREATE TABLE db.example_table (col_a ROW(struct_col_a BIGINT, struct_col_b ROW(nested_col_a VARCHAR, nested_col_b VARCHAR)))",
"hive": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a BIGINT, struct_col_b STRUCT<nested_col_a STRING, nested_col_b STRING>>)",
"spark": "CREATE TABLE db.example_table (col_a STRUCT<struct_col_a: LONG, struct_col_b: STRUCT<nested_col_a: STRING, nested_col_b: STRING>>)",
},
)
self.validate_all(
"SELECT * FROM a WHERE b IN UNNEST([1, 2, 3])",
write={
"bigquery": "SELECT * FROM a WHERE b IN UNNEST([1, 2, 3])",
"mysql": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
"presto": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY[1, 2, 3]))",
"hive": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
"spark": "SELECT * FROM a WHERE b IN (SELECT UNNEST(ARRAY(1, 2, 3)))",
},
)
# Reference: https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#set_operators
with self.assertRaises(UnsupportedError):
transpile(
"SELECT * FROM a INTERSECT ALL SELECT * FROM b",
write="bigquery",
unsupported_level=ErrorLevel.RAISE,
)
with self.assertRaises(UnsupportedError):
transpile(
"SELECT * FROM a EXCEPT ALL SELECT * FROM b",
write="bigquery",
unsupported_level=ErrorLevel.RAISE,
)
with self.assertRaises(ParseError):
transpile("SELECT * FROM UNNEST(x) AS x(y)", read="bigquery")
self.validate_all(
"DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)",
write={
"postgres": "CURRENT_DATE - INTERVAL '1' DAY",
},
)
self.validate_all(
"DATE_ADD(CURRENT_DATE(), INTERVAL 1 DAY)",
write={
"bigquery": "DATE_ADD(CURRENT_DATE, INTERVAL 1 DAY)",
"duckdb": "CURRENT_DATE + INTERVAL 1 DAY",
"mysql": "DATE_ADD(CURRENT_DATE, INTERVAL 1 DAY)",
"postgres": "CURRENT_DATE + INTERVAL '1' DAY",
"presto": "DATE_ADD(DAY, 1, CURRENT_DATE)",
"hive": "DATE_ADD(CURRENT_DATE, 1)",
"spark": "DATE_ADD(CURRENT_DATE, 1)",
},
)
self.validate_all(
"CURRENT_DATE('UTC')",
write={
"mysql": "CURRENT_DATE AT TIME ZONE 'UTC'",
"postgres": "CURRENT_DATE AT TIME ZONE 'UTC'",
},
)
self.validate_all(
"SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
write={
"bigquery": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a LIMIT 10",
"snowflake": "SELECT a FROM test WHERE a = 1 GROUP BY a HAVING a = 2 QUALIFY z ORDER BY a NULLS FIRST LIMIT 10",
},
)