Thanks for the answer. so there's no way around this problem? A nice index bitmap merge thing would be super fast. Big table ANTI JOIN queries with only a few results expected, are totally broken, if this is true. This way the query breaks my neck. This is a massive downside of postgres which makes this kind of query impossible. Mysql gives you the answer in a few seconds :-( > Possibly because the index entries you're anti-joining against may > point to deleted tuples, so you would erroneously omit rows from the > join result if you skip the visibility check? > > --- > Maciek Sakrejda | System Architect | Truviso > > 1065 E. Hillsdale Blvd., Suite 215 > Foster City, CA 94404 > (650) 242-3500 Main > www.truviso.com -- Schon gehÃrt? GMX hat einen genialen Phishing-Filter in die Toolbar eingebaut! http://www.gmx.net/de/go/toolbar -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
