"listar" <lis...@mail.ru> wrote: > PostgreSQL version: 8.4.5
> Description: wrong result with nested left-joins > And this is the problem - value2 can't be NULL because of COALESCE > in sub4 (at least I think that it can't be =)) This works correctly in release 9.0.4 and development HEAD. I don't still have any machines handy which are running 8.4, but you might want to try it on the latest bug-fix version of 8.4 (currently 8.4.8) to see if the fix was back-patched. http://www.postgresql.org/support/versioning -Kevin -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs