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from tests.dialects.test_dialect import Validator
from sqlglot import parse_one, exp, UnsupportedError, ErrorLevel, transpile, ParseError
from sqlglot.optimizer.annotate_types import annotate_types
class TestDremio(Validator):
dialect = "dremio"
maxDiff = None
def test_type_mappings(self):
self.validate_identity("CAST(x AS SMALLINT)", "CAST(x AS INT)")
self.validate_identity("CAST(x AS TINYINT)", "CAST(x AS INT)")
self.validate_identity("CAST(x AS BINARY)", "CAST(x AS VARBINARY)")
self.validate_identity("CAST(x AS TEXT)", "CAST(x AS VARCHAR)")
self.validate_identity("CAST(x AS NCHAR)", "CAST(x AS VARCHAR)")
self.validate_identity("CAST(x AS CHAR)", "CAST(x AS VARCHAR)")
self.validate_identity("CAST(x AS TIMESTAMPNTZ)", "CAST(x AS TIMESTAMP)")
self.validate_identity("CAST(x AS DATETIME)", "CAST(x AS TIMESTAMP)")
self.validate_identity("CAST(x AS ARRAY)", "CAST(x AS LIST)")
self.validate_identity("CAST(x AS BIT)", "CAST(x AS BOOLEAN)")
# unsupported types
with self.assertRaises(UnsupportedError):
transpile(
"CAST(x AS TIMESTAMPTZ)",
read="oracle",
write="dremio",
unsupported_level=ErrorLevel.IMMEDIATE,
)
with self.assertRaises(UnsupportedError):
transpile(
"CAST(x AS TIMESTAMPLTZ)",
read="oracle",
write="dremio",
unsupported_level=ErrorLevel.IMMEDIATE,
)
def test_concat_coalesce(self):
self.validate_all(
"SELECT CONCAT('a', NULL)",
write={
"dremio": "SELECT CONCAT('a', NULL)",
"": "SELECT CONCAT('a', COALESCE(NULL, ''))",
},
)
def test_typed_division(self):
def _div_result_type(sql: str, dialect: str):
tree = parse_one(sql, read=dialect)
annotate_types(tree, dialect=dialect)
return tree.find(exp.Div).type.this
assert _div_result_type("SELECT 5 / 2", "dremio") == exp.DataType.Type.BIGINT
assert _div_result_type("SELECT 5 / 2", "oracle") == exp.DataType.Type.DOUBLE
def test_user_defined_types_unsupported(self):
with self.assertRaises(ParseError):
self.parse_one("CAST(x AS MY_CUSTOM_TYPE)")
def test_null_ordering(self):
# NULLS LAST is the default, so generator can drop the clause
self.validate_identity(
"SELECT * FROM t ORDER BY a NULLS LAST", "SELECT * FROM t ORDER BY a"
)
self.validate_identity(
"SELECT * FROM t ORDER BY a DESC NULLS LAST", "SELECT * FROM t ORDER BY a DESC"
)
# If the clause is not the default, it must be kept
self.validate_identity(
"SELECT * FROM t ORDER BY a NULLS FIRST",
)
self.validate_identity(
"SELECT * FROM t ORDER BY a DESC NULLS FIRST",
)
def test_convert_timezone(self):
self.validate_all(
"SELECT CONVERT_TIMEZONE('America/Chicago', DateColumn)",
write={
"dremio": "SELECT CONVERT_TIMEZONE('America/Chicago', DateColumn)",
"": "SELECT DateColumn AT TIME ZONE 'America/Chicago'",
},
)
def test_interval_plural(self):
self.validate_identity("INTERVAL '7' DAYS", "INTERVAL '7' DAY")
def test_limit_only_literals(self):
self.validate_identity("SELECT * FROM t LIMIT 1 + 1", "SELECT * FROM t LIMIT 2")
def test_multi_arg_distinct_unsupported(self):
self.validate_identity(
"SELECT COUNT(DISTINCT a, b) FROM t",
"SELECT COUNT(DISTINCT CASE WHEN a IS NULL THEN NULL WHEN b IS NULL THEN NULL ELSE (a, b) END) FROM t",
)
def test_time_mapping(self):
ts = "CAST('2025-06-24 12:34:56' AS TIMESTAMP)"
self.validate_all(
f"SELECT TO_CHAR({ts}, 'yyyy-mm-dd hh24:mi:ss')",
read={
"dremio": f"SELECT TO_CHAR({ts}, 'yyyy-mm-dd hh24:mi:ss')",
"postgres": f"SELECT TO_CHAR({ts}, 'YYYY-MM-DD HH24:MI:SS')",
"oracle": f"SELECT TO_CHAR({ts}, 'YYYY-MM-DD HH24:MI:SS')",
"duckdb": f"SELECT STRFTIME({ts}, '%Y-%m-%d %H:%M:%S')",
},
write={
"dremio": f"SELECT TO_CHAR({ts}, 'yyyy-mm-dd hh24:mi:ss')",
"postgres": f"SELECT TO_CHAR({ts}, 'YYYY-MM-DD HH24:MI:SS')",
"oracle": f"SELECT TO_CHAR({ts}, 'YYYY-MM-DD HH24:MI:SS')",
"duckdb": f"SELECT STRFTIME({ts}, '%Y-%m-%d %H:%M:%S')",
},
)
self.validate_all(
f"SELECT TO_CHAR({ts}, 'yy-ddd hh24:mi:ss.fff tzd')",
read={
"dremio": f"SELECT TO_CHAR({ts}, 'yy-ddd hh24:mi:ss.fff tzd')",
"postgres": f"SELECT TO_CHAR({ts}, 'YY-DDD HH24:MI:SS.US TZ')",
"oracle": f"SELECT TO_CHAR({ts}, 'YY-DDD HH24:MI:SS.FF6 %Z')",
"duckdb": f"SELECT STRFTIME({ts}, '%y-%j %H:%M:%S.%f %Z')",
},
write={
"dremio": f"SELECT TO_CHAR({ts}, 'yy-ddd hh24:mi:ss.fff tzd')",
"postgres": f"SELECT TO_CHAR({ts}, 'YY-DDD HH24:MI:SS.US TZ')",
"oracle": f"SELECT TO_CHAR({ts}, 'YY-DDD HH24:MI:SS.FF6 %Z')",
"duckdb": f"SELECT STRFTIME({ts}, '%y-%j %H:%M:%S.%f %Z')",
},
)
def test_to_char_special(self):
# Numeric formats should have is_numeric=True
to_char = self.validate_identity("TO_CHAR(5555, '#')").assert_is(exp.ToChar)
assert to_char.args["is_numeric"] is True
to_char = self.validate_identity("TO_CHAR(3.14, '#.#')").assert_is(exp.ToChar)
assert to_char.args["is_numeric"] is True
to_char = self.validate_identity("TO_CHAR(columnname, '#.##')").assert_is(exp.ToChar)
assert to_char.args["is_numeric"] is True
# Non-numeric formats or columns should have is_numeric=None or False
to_char = self.validate_identity("TO_CHAR(5555)").assert_is(exp.ToChar)
assert not to_char.args.get("is_numeric")
to_char = self.validate_identity("TO_CHAR(3.14, columnname)").assert_is(exp.ToChar)
assert not to_char.args.get("is_numeric")
to_char = self.validate_identity("TO_CHAR(123, 'abcd')").assert_is(exp.ToChar)
assert not to_char.args.get("is_numeric")
to_char = self.validate_identity("TO_CHAR(3.14, UPPER('abcd'))").assert_is(exp.ToChar)
assert not to_char.args.get("is_numeric")
def test_date_add(self):
self.validate_identity("SELECT DATE_ADD(col, 1)")
self.validate_identity("SELECT DATE_ADD(col, CAST(1 AS INTERVAL HOUR))")
self.validate_identity(
"SELECT DATE_ADD(TIMESTAMP '2022-01-01 12:00:00', CAST(-1 AS INTERVAL HOUR))",
"SELECT DATE_ADD(CAST('2022-01-01 12:00:00' AS TIMESTAMP), CAST(-1 AS INTERVAL HOUR))",
)
def test_date_sub(self):
self.validate_identity("SELECT DATE_SUB(col, 1)")
self.validate_identity("SELECT DATE_SUB(col, CAST(1 AS INTERVAL HOUR))")
self.validate_identity(
"SELECT DATE_SUB(TIMESTAMP '2022-01-01 12:00:00', CAST(-1 AS INTERVAL HOUR))",
"SELECT DATE_SUB(CAST('2022-01-01 12:00:00' AS TIMESTAMP), CAST(-1 AS INTERVAL HOUR))",
)
def test_datetime_parsing(self):
self.validate_identity(
"SELECT DATE_FORMAT(CAST('2025-08-18 15:30:00' AS TIMESTAMP), 'yyyy-mm-dd')",
"SELECT TO_CHAR(CAST('2025-08-18 15:30:00' AS TIMESTAMP), 'yyyy-mm-dd')",
)
def test_array_generate_range(self):
self.validate_all(
"ARRAY_GENERATE_RANGE(1, 4)",
read={"dremio": "ARRAY_GENERATE_RANGE(1, 4)"},
write={"duckdb": "GENERATE_SERIES(1, 4)"},
)
def test_current_date_utc(self):
self.validate_identity("SELECT CURRENT_DATE_UTC")
self.validate_identity(
"SELECT CURRENT_DATE_UTC()",
"SELECT CURRENT_DATE_UTC",
)
def test_repeatstr(self):
self.validate_identity("SELECT REPEAT(x, 5)")
self.validate_identity("SELECT REPEATSTR(x, 5)", "SELECT REPEAT(x, 5)")
def test_regexp_like(self):
self.validate_all(
"REGEXP_MATCHES(x, y)",
write={
"dremio": "REGEXP_LIKE(x, y)",
"duckdb": "REGEXP_MATCHES(x, y)",
"presto": "REGEXP_LIKE(x, y)",
"hive": "x RLIKE y",
"spark": "x RLIKE y",
},
)
self.validate_identity("REGEXP_MATCHES(x, y)", "REGEXP_LIKE(x, y)")
def test_date_part(self):
self.validate_identity(
"SELECT DATE_PART('YEAR', date '2021-04-01')",
"SELECT EXTRACT('YEAR' FROM CAST('2021-04-01' AS DATE))",
)
def test_datetype(self):
self.validate_identity("DATETYPE(2024,2,2)", "DATE('2024-02-02')")
self.validate_identity("DATETYPE(x,y,z)", "CAST(CONCAT(x, '-', y, '-', z) AS DATE)")
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