From: Tom Lane <tgl@sss.pgh.pa.us>
To: Erik G. Burrows <eburrows@erikburrows.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: SQL problem: bank account
Date: Mon, 02 Jun 2003 09:42:37 -0400
Message-ID: <7888.1054561357@sss.pgh.pa.us> (raw)
In-Reply-To: <1054531815.13212.27.camel@griffin.jedi-group.com>
References: <1054531815.13212.27.camel@griffin.jedi-group.com>
"Erik G. Burrows" <eburrows@erikburrows.com> writes:
> I need to get the most recent transaction for each customer. I need only
> the transaction ID, but the entire row would be best.
If you don't mind a not-standard-SQL solution, the SELECT DISTINCT ON
construct is designed for this sort of thing. See the "weather report"
example in the SELECT reference page.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, eburrows@erikburrows.com
Subject: Re: SQL problem: bank account
In-Reply-To: <7888.1054561357@sss.pgh.pa.us>
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