Re: Rules and actions involving multiple rows

For me, triggers are for modifying the row being
updated/deleted/inserted, while rules are for modifying other rows as
part of the query.

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Jason Godden wrote:
> Hi All,
>
> Just have a quick question regarding rules:
>
> In the past I've always used triggers to fire before or after events however I
> see that the same thing can be achieved through rules (for logging etc...) so
> I created a rule which fires on update (not DO INSTEAD) however it only seems
> to work for a single row - whereas the triggers work for all rows updated in
> a transaction. Is this correct and if so I presume I should be sticking to
> triggers if I want this kind of behaviour?
>
> Rgds,
>
> Jason
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: the planner will ignore your desire to choose an index scan if your
> joining column's datatypes do not match
>

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