Hash on array with NULL throws exception #48623
Description
CREATE TABLE test
(
c Array(Nullable(Int64))
)
ENGINE = Memory;
INSERT INTO test VALUES (NULL) ([-1,NULL]);
SELECT xxHash32(c) FROM testProduces
Received exception from server (version 23.4.1):
Code: 48. DB::Exception: Received from localhost:9001. DB::Exception: Method getDataAt is not supported for Nullable(Int64) in case if value is NULL: while executing 'FUNCTION xxHash32(a :: 0) -> xxHash32(a) UInt32 : 1'. (NOT_IMPLEMENTED)
This used to work until #40195.
See also #51541