From: OizOne <rautaon@nic.fi>
To: pgsql-sql@postgresql.org
Subject: help with limiting query results
Date: Tue, 13 Jan 2004 21:34:08 +0200
Message-ID: <20040113193312.05BDAEB4942@gw02.mail.saunalahti.fi> (raw)
Hi,
I have the following table in postgres:
hostname | username | logontime
----------+---------------+----------------------------
ws1 | rautaonn | 2004-01-13 21:25:01.100336
ws1 | administrator | 2004-01-13 21:25:07.706546
ws1 | testuser | 2004-01-13 21:25:16.084844
ws2 | testuser | 2004-01-13 21:25:18.683653
ws2 | testuser2 | 2004-01-13 21:25:20.862199
ws2 | administrator | 2004-01-13 21:25:25.932736
ws2 | oizone | 2004-01-13 21:25:30.107574
and I would need to create a query that selects each hostname only once with
username that has the latest timestamp in the logontime column.
The real table has about 5000 rows with ยจ500 different hostnames, and I
would need this query for reporting. Any help would be appreciated.
Thank in advance.
-Onni Rautanen
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Cc: rautaon@nic.fi
Subject: Re: help with limiting query results
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