DROP TABLE IF EXISTS t1__fuzz_4; DROP TABLE IF EXISTS t0__fuzz_29; SET allow_suspicious_low_cardinality_types = 1, join_algorithm = 'partial_merge', join_use_nulls = 1; CREATE TABLE t1__fuzz_4 (`x` Nullable(UInt32), `y` Int64) ENGINE = MergeTree ORDER BY (x, y) SETTINGS allow_nullable_key = 1; CREATE TABLE t0__fuzz_29 (`x` LowCardinality(UInt256), `y` Array(Array(Date))) ENGINE = MergeTree ORDER BY (x, y); SELECT sum(0), NULL FROM t0__fuzz_29 FULL OUTER JOIN t1__fuzz_4 USING (x) PREWHERE NULL; DROP TABLE t1__fuzz_4; DROP TABLE t0__fuzz_29;