select cast('01:02:03 ' as time), cast('01:02:03 ' as time); cast('01:02:03 ' as time) cast('01:02:03 ' as time) 01:02:03 00:00:00 select cast('2002-011-012' as date), cast('2002.11.12' as date), cast('2002.011.012' as date); cast('2002-011-012' as date) cast('2002.11.12' as date) cast('2002.011.012' as date) 2002-11-12 2002-11-12 2002-11-12 select cast('2012103123595912' as datetime(6)), cast('20121031235959123' as datetime(6)); cast('2012103123595912' as datetime(6)) cast('20121031235959123' as datetime(6)) 2012-10-31 23:59:59.000000 2012-10-31 23:59:59.000000 Warnings: Warning 1292 Truncated incorrect datetime value: '2012103123595912' Warning 1292 Truncated incorrect datetime value: '20121031235959123' select cast(0 as date), cast('0000-00-00' as date), cast('0' as date); cast(0 as date) cast('0000-00-00' as date) cast('0' as date) 0000-00-00 0000-00-00 NULL Warnings: Warning 1292 Incorrect datetime value: '0' select extract(hour from '100000:02:03'), extract(hour from '100000:02:03 '); extract(hour from '100000:02:03') extract(hour from '100000:02:03 ') NULL NULL Warnings: Warning 1292 Truncated incorrect time value: '100000:02:03' Warning 1292 Truncated incorrect time value: '100000:02:03 ' # # backward compatibility craziness # select cast('12:00:00.12.34.56' as time); cast('12:00:00.12.34.56' as time) 12:00:00 Warnings: Warning 1292 Truncated incorrect time value: '12:00:00.12.34.56' select cast('12:00:00 12.34.56' as time); cast('12:00:00 12.34.56' as time) 12:34:56 select cast('12:00:00-12.34.56' as time); cast('12:00:00-12.34.56' as time) 12:00:00 Warnings: Warning 1292 Truncated incorrect time value: '12:00:00-12.34.56' select cast('12:00:00.12.34.56' as datetime); cast('12:00:00.12.34.56' as datetime) 2012-00-00 12:34:56 select cast('12:00:00-12.34.56' as datetime); cast('12:00:00-12.34.56' as datetime) 2012-00-00 12:34:56 select cast('12:00:00 12.34.56' as datetime); cast('12:00:00 12.34.56' as datetime) 2012-00-00 12:34:56 select cast('12:00:00.123456' as time); cast('12:00:00.123456' as time) 12:00:00