Skip site navigation (1)
Skip section navigation (2)
Peripheral Links
Header And Logo
|
Site Navigation
Re: select max(field) from table much faster with a group by clause?
- From: Palle Girgensohn <girgen(at)pingpong(dot)net>
- To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
- Cc: pgsql-performance(at)postgresql(dot)org
- Subject: Re: select max(field) from table much faster with a group by clause?
- Date: Thu, 01 Nov 2007 16:25:08 +0100
--On torsdag, november 01, 2007 11.06.57 -0400 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
Palle Girgensohn <girgen(at)pingpong(dot)net> writes:Unfortunately, altering statistics doesn't help. I see no difference when altering the value from 10 (default) to 100, 1000 or 100000. :-(Um, you did re-ANALYZE the table after changing the setting?
alter table login alter userid SET statistics 1000; vacuum analyze login;
- Follow-Ups:
- References:
- select max(field) from table much faster with a group by clause?
- From: Palle Girgensohn
- Re: select max(field) from table much faster with a group by clause?
- From: Tom Lane
- Re: select max(field) from table much faster with a group by clause?
- From: Palle Girgensohn
- Re: select max(field) from table much faster with a group by clause?
- From: Tom Lane
- select max(field) from table much faster with a group by clause?
- Prev by Date: Re: select max(field) from table much faster with a group by clause?
- Next by Date: Re: select max(field) from table much faster with a group by clause?
- Previous by thread: Re: select max(field) from table much faster with a group by clause?
- Next by thread: Re: select max(field) from table much faster with a group by clause?
- Indexes: