On 06/04/2009 22:55, Gauthier, Dave wrote: > How can I do this.... > > selcet coalesce((select 'y' from foo where name = f.name),'n') from foo f where... > > So the query returns a "y" or "n" depending on whether or not the subquery is null. Are you sure that the subquery is returning any rows? Try something like this instead (not tested): select case when exists(select 1 from foo where name = f.name) then 'y' else 'n' end from foo.... Ray. ------------------------------------------------------------------ Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland rod@xxxxxx Galway Cathedral Recitals: http://www.galwaycathedral.org/recitals ------------------------------------------------------------------ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general