Question

guy. I have a strange trouble When I try create a table with timestamp type.

create table `test`
 ( `time` timestamp(14) );

ERROR 1426 (42000): Too big precision 14 specified for column ‘time’. Maximum is 6.

I thought the 14 is a bytes lengths for storage. But it seems like the time precision, because 6 = microsecond(1/1000000), 2012-07-29 00:37:46.000000

Anybody can explain it ? I didn’t find it in online documentation!
thanks

Answer 1

Timestamp columns use the unix timestamp format and you can’t control their precision, they are always 4 bytes (5 if null-able). Try

create table `test` ( `time` timestamp );