SELECT uniqExactIf(number, 1) FROM numbers_mt(1e7) SELECT uniqExactState(number) FROM numbers_mt(1e7) Format Null SELECT uniqExactArray([number]) FROM numbers_mt(1e7) Format Null with (SELECT uniqExactState(number) FROM numbers_mt(1e7)) as a select uniqExactMerge(a) SELECT uniqExactOrNull(number) FROM numbers_mt(1e7)