1. 2011-09-21 Re: [PERFORM] Slow query with self-join, group by, 10 pgsql-per Tom Lane 2. 2011-09-21 Re: [PERFORM] Slow query with self-join, group by, 10 pgsql-per Robert Klemme 3. 2011-09-20 [PERFORM] Slow query with self-join, group by, 100m r pgsql-per Thomas Kappler