Re: On-line backup

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Mr(dot) Dan" <bitsandbytes88(at)hotmail(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: On-line backup
Date: 2006-07-17 18:43:30
Message-ID: 4954.1153161810@sss.pgh.pa.us
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"Mr. Dan" <bitsandbytes88(at)hotmail(dot)com> writes:
> ... What happens is that we have a 'hot' table (one with many many
> transactions) that gets inserted and deleted often. About once a month now
> when we do a select from that table the results of the select do not match
> the where clause, ex.

> select * from recent_projects
> where user_id = 139

> sometimes produces these results:

> user_id project_id
> 139 3
> 139 1
> 139 17
> 754 11

Hmmm .... that looks sorta familiar. What is the query plan that's used
for this SELECT?

regards, tom lane

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