From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
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To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "Ow Mun Heng" <Ow(dot)Mun(dot)Heng(at)wdc(dot)com>, <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: PG for DataWarehouse type Queries |
Date: | 2007-08-03 14:34:18 |
Message-ID: | 87ejikbsb9.fsf@oxford.xeocode.com |
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Lists: | pgsql-general |
"Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> Ow Mun Heng <Ow(dot)Mun(dot)Heng(at)wdc(dot)com> writes:
>> Can anyone shed some light on this. I just would like to know if queries
>> for raw data (not aggregregates) is expected to take a long time.
>> Running times between 30 - 2 hours for large dataset pulls.
>
>> Involves lots of joins on very large tables (min 1 millon rows each
>> table, 300 columns per table)
One more question to pile on to the others: what version of Postgres is this.
I seem to recall some older versions had trouble with tables with hundreds of
columns, but that's just guessing in the dark without actual facts to look at.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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