Hello, I want to run a long running query in background to collect statistics. I.e. how many users played the game last month more than 50 times. SELECT count(*) FROM (SELECT user_id, COUNT(*) AS total_games FROM games, game2user WHERE games.finished > '2009-02-19' AND games.id = game2user.game_id GROUP BY user_id) AS aaa WHERE aaa.total_games > 50; I have 4-cored machine, so I expected the query to be able to run for a long time without performance degrade for application. But the query has completely blocked all other queries. Even those, which are not related to tables, used by the long-running query. Why does this block happen and how to aid it? Thanks. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
