> Hmm, the large number of columns might have something to do with it ...
> what datatypes are the columns?

All sorts, but mostly float4 and varchar(2 to 10)

Jay

-----Original Message-----
From: Tom Lane [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, February 14, 2006 1:03 PM
To: Jay Greenfield
Cc: 'Stephen Frost'; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Postgres slower than MS ACCESS 

"Jay Greenfield" <[EMAIL PROTECTED]> writes:
> The table is 1.2 million rows X 246 columns.  The only index is the
primary
> key.  I will try to remove that index to see if that improves performance
at
> all.

Hmm, the large number of columns might have something to do with it ...
what datatypes are the columns?

                        regards, tom lane


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TIP 9: In versions below 8.0, the planner will ignore your desire to
       choose an index scan if your joining column's datatypes do not
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