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Re: Maximum Number Tables

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>
Cc: Ashvinder Singh <ashvindersingh(at)hfcl(dot)com>,pgsql-admin(at)postgresql(dot)org
Subject: Re: Maximum Number Tables
Date: 2004-04-15 23:33:41
Message-ID: 22272.1082072021@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-admin
Robert Treat <xzilla(at)users(dot)sourceforge(dot)net> writes:
> On Mon, 2004-04-12 at 00:28, Ashvinder Singh wrote:
>> What is the maximum number of tables I can have in a PGSql Database,
>> without affecting performance?

> The number of tables is irrelevant,

Not necessarily ... if you are using a filesystem in which directory
lookups in large directories are inefficient, you could have a problem,
since each table will correspond to a file within the database
directory.  If you're planning on having more than a few thousand
tables you'll want to choose a filesystem that copes well with large
directories.

But having said that, an application that needs several thousand
distinct tables is usually an application that needs a redesign.
Consider folding the data into fewer tables with more key columns.

			regards, tom lane

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