"Philip Boonzaaier" <phil@cks.co.za> writes:
> I want to be able to generate SQL statements that will go through a list of
> data, effectively row by row, enquire on the database if this exists in the
> selected table- If it exists, then the colums must be UPDATED, if not, they
> must be INSERTED.
>
> Logically then, I would like to SELECT * FROM <TABLE>
> WHERE ....<Values entered here>, and then IF FOUND
> UPDATE <TABLE> SET .... <Values entered here> ELSE
> INSERT INTO <TABLE> VALUES <Values entered here>
> END IF;
>
> The IF statement gets rejected by the parser. So it would appear that
> PostgreSQL does not support an IF in this type of query, or maybe not at
> all.
Nope. I don't know of an SQL database that does, though I certainly
haven't seen all of them...
> Does anyone have any suggestions as to how I can achieve this ?
Application code that loops through the results of the first query,
and issues UPDATE/INSERT statements as needed? Or you could do it as
a PL/pgSQL function which might be a little faster.
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I have companies that force crap like this on mailing list postings...
-Doug
