On Wed, 11 Oct 2006, Markus Schaber wrote:
> What is it that you're trying to achieve with the ordered delete? Maybe
> there's a better way to solve your underlying problem.
I've a table which has a field for some info (number) and a date field
(insertion date) and others.
After inserting new rows into this table, very old rows are going to
be deleted. But value of deleted info should be remembered somehow, so
there is a trigger on delete which keeps sum of the deleted info
values in a separate table. This makes the application happy.
Trigger's algorithm is a little bit more dificult which I would be
able to simplify if rows are deleted in date order.
Now I'm doing it in a plpgsql function using a `for in select loop' to
delete rows one by one.
Daniel