am Thu, dem 06.03.2008, um 12:36:48 +0530 mailte sathiya psql folgendes: > > QUERY PLAN > ------------------------------------------------------------------------------------------------------------------------------ > Aggregate (cost=205756.95..205756.95 rows=1 width=0) (actual time= > 114675.042..114675.042 rows=1 loops=1) > -> Seq Scan on call_log (cost=0.00..193224.16 rows=5013112 width=0) > (actual time=11.754..91429.594 rows=5061619 loops=1) > Filter: (call_id > 0) > Total runtime: 114699.797 ms > (4 rows) 'call_id > 0' are your where-condition? An INDEX can't help, all rows with call_id > 0 are in the result, and i guess, that's all records in the table. > > > it is now taking 114 seconds, i think because of load in my system.... any way > will you explain., what is this COST, actual time and other stuffs.... 08:16 < akretschmer> ??explain 08:16 < rtfm_please> For information about explain 08:16 < rtfm_please> see http://explain-analyze.info 08:16 < rtfm_please> or http://www.depesz.com/index.php/2007/08/06/better-explain-analyze/ 08:16 < rtfm_please> or http://www.postgresql.org/docs/current/static/sql-explain.html and http://redivi.com/~bob/oscon2005_pgsql_pdf/OSCON_Explaining_Explain_Public.pdf Read this to learn more about explain. 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
