Willy-Bas Loos wrote:
> I did something like that some years ago.
> Albe, are rules out of grace?
Sort of, for many people:
http://archives.postgresql.org/pgsql-hackers/2012-04/msg00395.php
They are difficult to get right and usually not better than triggers.
Ever since there were INSTEAD OF Triggers for all actions, this is
generally the prefered option.
Yours,
Laurenz Albe