SET allow_experimental_json_type = 1; SET allow_experimental_variant_type = 1; DROP TABLE IF EXISTS t0; CREATE TABLE t0 (c0 Int) ENGINE = Memory(); INSERT INTO t0 (c0) VALUES (1); ALTER TABLE t0 (ADD COLUMN c1 JSON(c1 Variant(Int,JSON(c1 Int)))); INSERT INTO t0 (c0, c1) VALUES (2, '{"c1":1}'::JSON); SELECT kafkaMurmurHash(c1) FROM t0; -- {serverError NOT_IMPLEMENTED} DROP TABLE t0;