What is your constraint_exclusion config set to on your new instance? -----Original Message----- From: pgsql-admin-owner@xxxxxxxxxxxxxx [mailto:pgsql-admin-owner@xxxxxxxxxxxxxx] On Behalf Of Anj Adu Sent: Tuesday, August 18, 2009 8:30 AM To: pgsql-admin@xxxxxxxxxxxxxx Subject: select max(parent_table) slow We are testing 8.4 and noticed that the performance of select max(indexed_col) from parent_Table is the same (slow) as postgres 8.1.x ( our current version). The child tables are huge and the indexed_col is not the basis for partitioning. I remember that this was an issue from an earlier thread where the optimizer was not able to use the child partitions only to get the max value. Is this true for 8.4 ? -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
