Hello everybody, having this SQL query: -------------- select variable_id,float_value,ts,good_through,interval,datetime_value,string_value,int_value,blob_value,history_value_type from "records_437954e9-e048-43de-bde3-057658966a9f" where variable_id in (22727) and (ts >= '2010-10-02 11:19:55' or good_through >= '2010-10-02 11:19:55') and (ts <= '2010-10-14 11:19:55' or good_through <= '2010-10-14 11:19:55') union all select variable_id,float_value,ts,good_through,interval,datetime_value,string_value,int_value,blob_value,history_value_type from "records_1d115712-e943-4ae3-bb14-b56a95796111" where variable_id in (24052) and (ts >= '2010-10-02 11:19:55' or good_through >= '2010-10-02 11:19:55') and (ts <= '2010-10-14 11:19:55' or good_through <= '2010-10-14 11:19:55') order by ts limit 2501 offset 0 --------------- and these two results: 1st run: http://explain.depesz.com/s/1lT 2nd run: http://explain.depesz.com/s/bhA is there anything I can do about the speed? Only buying faster hard-disk seems to me as the solution... Am I right? Thank you in advance Martin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
