From: Emi Lu <emilu@encs.concordia.ca>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org
Subject: Re: Find min and max values across two columns?
Date: Tue, 16 May 2006 10:44:07 -0400
Message-ID: <4469E537.6010108@encs.concordia.ca> (raw)
In-Reply-To: <441.1147738085@sss.pgh.pa.us>
References: <DAD4674C-1896-4F24-B43B-B884491DB931@polkaroo.net>
<9558.1143234035@sss.pgh.pa.us>
<4468F558.7070407@encs.concordia.ca>
<441.1147738085@sss.pgh.pa.us>
Thank you Tom.
>Emi Lu <emilu@encs.concordia.ca> writes:
>
>
>>ERROR: function greatest(integer, integer) does not exist
>>HINT: No function matches the given name and argument types. You may
>>need to add explicit type casts.
>>
>>
>
>We added greatest/least in 8.1, but before that you can just use a
>CASE expression instead, along the lines of
> case when x>y then x else y end
>
> regards, tom lane
>
>---------------------------(end of broadcast)---------------------------
>TIP 6: explain analyze is your friend
>
>
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To: pgsql-sql@postgresql.org
Cc: emilu@encs.concordia.ca, tgl@sss.pgh.pa.us
Subject: Re: Find min and max values across two columns?
In-Reply-To: <4469E537.6010108@encs.concordia.ca>
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