Thomas Kellerer wrote: > zeljko, 04.02.2013 10:35: >> Edson Richter wrote: >> >>> Hi! >>> >>> Assumptions: PostgreSQL 9.2.2, Win64, already run vacumm full freeze >>> analyze. No problems in the database. I know there are 1247 records to >>> be found. >>> Why does these queries return different results: >>> >>> >>> select count(*) from parcela >>> where id not in (select parcela_id from cadastroservicoparcela); >> >> I'm always using >> WHERE NOT id in (blabla) and never had such problems. >> > > If blabla returns NULL values, then you will have problems eventually.
but it doesn't, then blabla should say WHERE NOT some ISNULL. zeljko -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
