On Mon, Jan 19, 2009 at 2:44 AM, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
> Watch out for bloat when doing this. A simple where change of
>
> update table set b = 45 ;
>
> to
>
> update table set b = 45 where b <> 45 ;
>
> can save the db a lot of work, and if you can apply the same logic to
> your update to save some dead tuples it's worth looking into.
I wonder why DB can't do it on its own :)
--
GJ