On Mon, Nov 16, 2009 at 1:31 PM, SebiF <sfeher@gmail.com> wrote:
> Hi Everyone,
>
> Given a table "Items" with a PK "item1" and "Qty" - a numeric column
> I'd like to define a way in Postgres to insert when item11 doesn't
> exist already in "Items" and update the Qty by adding the new quantity
> to the existent when the item11 exists. What is a good approach and
> where should I be looking for details. Thanks.
>
> Sebastian
This is not a -hackers question; please use pgsql-general instead.
Also see example 38-2 here:
http://www.postgresql.org/docs/current/static/plpgsql-control-structures.html
...Robert