from tests.dialects.test_dialect import Validator class TestClickhouse(Validator): dialect = "clickhouse" def test_clickhouse(self): self.validate_identity("SELECT INTERVAL t.days day") self.validate_identity("SELECT match('abc', '([a-z]+)')") self.validate_identity("dictGet(x, 'y')") self.validate_identity("SELECT * FROM x FINAL") self.validate_identity("SELECT * FROM x AS y FINAL") self.validate_identity("'a' IN mapKeys(map('a', 1, 'b', 2))") self.validate_identity("CAST((1, 2) AS Tuple(a Int8, b Int16))") self.validate_identity("SELECT * FROM foo LEFT ANY JOIN bla") self.validate_identity("SELECT * FROM foo LEFT ASOF JOIN bla") self.validate_identity("SELECT * FROM foo ASOF JOIN bla") self.validate_identity("SELECT * FROM foo ANY JOIN bla") self.validate_identity("SELECT quantile(0.5)(a)") self.validate_identity("SELECT quantiles(0.5)(a) AS x FROM t") self.validate_identity("SELECT quantiles(0.1, 0.2, 0.3)(a)") self.validate_identity("SELECT histogram(5)(a)") self.validate_identity("SELECT groupUniqArray(2)(a)") self.validate_identity("SELECT exponentialTimeDecayedAvg(60)(a, b)") self.validate_identity("SELECT * FROM foo WHERE x GLOBAL IN (SELECT * FROM bar)") self.validate_identity("position(haystack, needle)") self.validate_identity("position(haystack, needle, position)") self.validate_all( "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname", write={ "clickhouse": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname, lname", "spark": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname NULLS LAST", }, ) self.validate_all( "CAST(1 AS NULLABLE(Int64))", write={ "clickhouse": "CAST(1 AS Nullable(Int64))", }, ) self.validate_all( "CAST(1 AS Nullable(DateTime64(6, 'UTC')))", write={ "clickhouse": "CAST(1 AS Nullable(DateTime64(6, 'UTC')))", }, ) self.validate_all( "SELECT x #! comment", write={"": "SELECT x /* comment */"}, ) self.validate_all( "SELECT quantileIf(0.5)(a, true)", write={ "clickhouse": "SELECT quantileIf(0.5)(a, TRUE)", }, ) self.validate_all( "SELECT position(needle IN haystack)", write={"clickhouse": "SELECT position(haystack, needle)"}, ) def test_cte(self): self.validate_identity("WITH 'x' AS foo SELECT foo") self.validate_identity("WITH SUM(bytes) AS foo SELECT foo FROM system.parts") self.validate_identity("WITH (SELECT foo) AS bar SELECT bar + 5") self.validate_identity("WITH test1 AS (SELECT i + 1, j + 1 FROM test1) SELECT * FROM test1")