Hi, all! No one knows why I got "actual time=0.014..0.570 rows=30 loops=511222" and "actual time=0.005..0.006 rows=1 loops=15158976"? With: cu.cal_user_type = 'u' AND cu.cal_recur_date = COALESCE((SELECT cd.cal_start FROM egw_cal_dates icd WHERE icd.cal_id = cd.cal_id AND icd.cal_start = cd.cal_start AND icd.cal_start <> 0), 0) ~ 450 seconds With cu.cal_user_type = 'u' ~ 130 ms With cu.cal_recur_date = COALESCE((SELECT cd.cal_start FROM egw_cal_dates icd WHERE icd.cal_id = cd.cal_id AND icd.cal_start = cd.cal_start AND icd.cal_start <> 0), 0) ~ 1 second I've tryied to increase statistics to maximum, with no success. This is the eGroupware database schema, with a few records. The complete queries and plan folows. ---------- Forwarded message ---------- From: Daniel Cristian Cruz <danielcristian@xxxxxxxxx> Date: 2008/12/1 Subject: Not so simple query and a half million loop To: pgsql-admin <pgsql-admin@xxxxxxxxxxxxxx> I've tryied 4 times to post this message to pgsql-performance without success... No return, even an error... -- Daniel Cristian Cruz クルズ クリスチアン ダニエル
Attachment:
query.sql
Description: Binary data
-- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
