Re: insert on duplicate update?

Peter Filipov wrote:
> hi,
> is there in postgres anything similar to:
> insert .... on duplicate update?
> here is the problem i need a solution for:
> I need to insert in pg_type a row which was previously selected from
> there  and
> with slight modifications, the problem is that when i try to insert the row
> there might be a row with the same 'typname' which is sort of primary key.
> The second problem is that when doing those operations i don't want to
> depend
> on the specific structure of the pg_type catalog.

Are you certain it will always be safe to do this?

How will you provide meaningful values for columns you don't know exist?

--
   Richard Huxton
   Archonet Ltd