Am Son, 2003-07-06 um 02.22 schrieb brew@theMode.com:
> Hi Chris.......
>
> > The problem, though, is that I need this type of functionality... To
> > INSERT or UPDATE depending on whether or not the record is already
> > there. I've spent the last several hours trying to figure out how I can
> > set up a trigger to do this.
>
> Don't know about a trigger, but the way I do this is do a SELECT, if no
> rows are returned I do an INSERT, if rows are returned I do an UPDATE.
>
> Somebody else probably has a more clever way to do it though......
I would do this unconditionally.
UPDATE ... FROM ... WHERE EXISTS (SELECT ...)
INSERT INTO ... WHERE NOT EXISTS (SELECT ...)
That are still 2 queries, but better than playing around with triggers.
HTH
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