Postgres Pro
Downloads
Home   >   mailing lists

Re: Postgresql selecting strange index for simple query - Mailing list pgsql-general

From Tom Lane
Subject Re: Postgresql selecting strange index for simple query
Date
Msg-id 17791.1235664686@sss.pgh.pa.us
Whole thread Raw
In response to Postgresql selecting strange index for simple query  (Maxim Boguk <mboguk@masterhost.ru>)
List pgsql-general
Tree view 
Maxim Boguk <mboguk@masterhost.ru> writes:
> Somehow postgres think index scan on singlecolumn index slower comparing to scan on 4th field of 4column index.

It does know better than that.  I'm wondering if the single-column index
has become very bloated or something.  Have you compared the physical
index sizes?

            regards, tom lane

pgsql-general by date:

Previous
From: Tom Lane
Date:
Subject: Re: Postgresql selecting strange index for simple query
Next
From: Torsten Bronger
Date:
Subject: Getting time-dependent load statistics