am Thu, dem 06.03.2008, um 12:17:55 +0530 mailte sathiya psql folgendes: > TRIGGER i can use if i want the count of the whole table, but i require for > some of the rows with WHERE condition.... > > so how to do that ??? Okay, in this case a TRIGGER are a bad idea. You can use an INDEX on this row. Can you show us the output for a EXPLAIN ANALYSE SELECT count(*) from <your_table> WHERE <your_row> = ... ? Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://mail.postgresql.org/mj/mj_wwwusr?domain=postgresql.org&extra=pgsql-performance