Re: Update on Insert

SebiF <sfeher(at)gmail(dot)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.

21:53 < akretschmer> ??upsert
21:53 < rtfm_please> For information about upsert
21:53 < rtfm_please> see http://www.postgresql.org/docs/current/static/plpgsql-control-structures.html#PLPGSQL-UPSERT-EXAMPLE

Read that.

Andreas
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