Re: time stamp specific to columns

2015-04-14 Thread hsv
On 2015/04/09 13:42, Michael Dykman wrote: A trigger is far simpler than remodelling your data and adding extra queries. They are nothing to be afraid of. Not afraid of, but to be careful when writing. I have had trouble with my triggers, because I left thisthat out. As for timestamping,

Re: time stamp specific to columns

2015-04-09 Thread hsv
On 2015/04/08 11:42, Andrew Wallace wrote: I think you'd have to do that with a trigger. Yes, one can do that with a trigger, but it is a real pain. MySQL now allows (new.a,new.b,new.c,new.d) (old.a,old.b,old.c,old.d) but one needs to beware of NULL. Maybe it is better to split off

Re: time stamp specific to columns

2015-04-09 Thread Michael Dykman
A trigger is far simpler than remodelling your data and adding extra queries. They are nothing to be afraid of. On Thu, Apr 9, 2015 at 10:46 AM, h...@tbbs.net wrote: On 2015/04/08 11:42, Andrew Wallace wrote: I think you'd have to do that with a trigger. Yes, one can do that with a

Re: time stamp specific to columns

2015-04-08 Thread Andrew Wallace
I think you'd have to do that with a trigger. On 4/8/15 6:36 AM, Martin Mueller wrote: I understand how a timestamp column automatically changes when there is a change in a data row. Is it possible to limit the update to changes in particular columns? I have a table where I care about changes

Re: time stamp specific to columns

2015-04-08 Thread Emil Oppeln-Bronikowski
W dniu 08.04.2015 o 17:42, Andrew Wallace pisze: I think you'd have to do that with a trigger. +1 for using triggers. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql

time stamp specific to columns

2015-04-08 Thread Martin Mueller
I understand how a timestamp column automatically changes when there is a change in a data row. Is it possible to limit the update to changes in particular columns? I have a table where I care about changes in any of four different columns, but I donĀ¹t care about changes in other columns or added