Re: [TRIGGER] Returning values from BEFORE UPDATE trigger, without using them

Torsten Zühlsdorff <foo@meisterderspiele.de> writes:
> I have defined an BEFORE UPDATE trigger. The trigger catch every update, 
> change some columns of the new row, make an insert of the new row and 
> returns null to abort the update.

Why in the world would you do that?  Just return the modified row from
the trigger and let the update proceed normally.
        regards, tom lane