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Re: BUG #1286: indices not used after a pg_restore

From: Federico Di Gregorio <fog(at)initd(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-bugs(at)postgresql(dot)org, fog(at)initd(dot)org
Subject: Re: BUG #1286: indices not used after a pg_restore
Date: 2004-10-14 11:06:39
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
On Thu, 2004-10-14 at 06:54 -0400, Tom Lane wrote:
> "PostgreSQL Bugs List" <pgsql-bugs(at)postgresql(dot)org> writes:
> > After a pg_dump/pg_restore (using the tar format) queries that were using 
> > the indices don't use them anymore until the indices are dropped and 
> > recreated. After that the indices are used the correct way. 
> I do not believe that you remembered to ANALYZE after restore.

unfortunately for your belief, i remembered. :)

also, this problem can be replicated at will. i can send a dump that
exposes the problem if necessary but i'll need some time to purge
customers data and create a dump a can freely send.

Federico Di Gregorio               
Debian GNU/Linux Developer                                fog(at)debian(dot)org
INIT.D Developer                                           fog(at)initd(dot)org
  Debian. The best software from the best people [see above]
                                      -- brought to you by One Line Spam

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Subject: Re: SELECT FOR UPDATE and LIMIT 1 behave oddly
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