am Tue, dem 23.01.2007, um 10:12:13 -0500 mailte Brandon Aiken folgendes: > Out of curiosity, has the COUNT(*) with no WHERE clause slowness been > fixed in 8.x? Or is it still an issue of "there's no solution that > won't harm aggregates with WHERE clauses"?
I will try it: scholl=# \timing Timing is on. scholl=# select count(1) from bde_meldungen ; count --------- 1813210 (1 row) Time: 1925.471 ms scholl=*# select count(1) from bde_meldungen where datum = current_date-'1day'::interval; count ------- 2694 (1 row) Time: 5.670 ms Btw: yes, the table has more rows than the table from the origin poster and the count(1) is much faster. Perhaps he should show us an 'explain analyse'. My guess: many dead tuples. Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
