Tom Lane wrote:
> "Albe Laurenz" <all@adv.magwien.gv.at> writes:
>> Richard Broersma Jr wrote:
>> A rule would only
>> execute one additional statement. So if you can do it with a rule
>> conveniently, the rule will probably be faster.
>
> I find this unlikely. The overhead involved in setting up a rule
> is probably larger than that involved in calling a trigger.
> The real question is whether you need access to the modified data
> or not --- a statement-level trigger doesn't currently get that.
Not that Tom ever needs any backing up, but when we started testing
partitioning, we first tested with rules and then tested with triggers.
Triggers are quite a bit faster than rules.
Joshua D. Drake
>
> regards, tom lane
>
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