DROP TABLE IF EXISTS A; SELECT CAST(1 as DateTime64('abc')); -- { serverError 43 } # Invalid scale parameter type SELECT CAST(1 as DateTime64(100)); -- { serverError 69 } # too big scale SELECT CAST(1 as DateTime64(-1)); -- { serverError 43 } # signed scale parameter type SELECT CAST(1 as DateTime64(3, 'qqq')); -- { serverError BAD_ARGUMENTS } # invalid timezone SELECT toDateTime64('2019-09-16 19:20:11.234', 'abc'); -- { serverError 43 } # invalid scale SELECT toDateTime64('2019-09-16 19:20:11.234', 100); -- { serverError 69 } # too big scale SELECT toDateTime64(CAST([['CLb5Ph ']], 'String'), uniqHLL12('2Gs1V', 752)); -- { serverError 44 } # non-const string and non-const scale SELECT toDateTime64('2019-09-16 19:20:11.234', 3, 'qqq'); -- { serverError BAD_ARGUMENTS } # invalid timezone SELECT ignore(now64(gccMurmurHash())); -- { serverError 43 } # Illegal argument type SELECT ignore(now64('abcd')); -- { serverError 43 } # Illegal argument type SELECT ignore(now64(number)) FROM system.numbers LIMIT 10; -- { serverError 43 } # Illegal argument type SELECT ignore(now64(3, 'invalid timezone')); -- { serverError BAD_ARGUMENTS } SELECT ignore(now64(3, 1111)); -- { serverError 44 } # invalid timezone parameter type WITH 'UTC' as timezone SELECT timezone, timeZoneOf(now64(3, timezone)) == timezone; WITH 'Europe/Minsk' as timezone SELECT timezone, timeZoneOf(now64(3, timezone)) == timezone; SELECT toDateTime64('2019-09-16 19:20:11', 3, 'UTC'); -- this now works OK and produces timestamp with no subsecond part CREATE TABLE A(t DateTime64(3, 'UTC')) ENGINE = MergeTree() ORDER BY t; INSERT INTO A(t) VALUES ('2019-05-03 11:25:25.123456789'); SELECT toString(t, 'UTC'), toDate(t), toStartOfDay(t), toStartOfQuarter(t), toTime(t), toStartOfMinute(t) FROM A ORDER BY t; SELECT toDateTime64('2019-09-16 19:20:11.234', 3, 'Europe/Minsk'); DROP TABLE A;