From: Iain <iain@mst.co.jp>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org
Subject: Re: invalid 'having' clause
Date: Thu, 2 Dec 2004 16:46:22 +0900
Message-ID: <000e01c4d843$07a83890$7201a8c0@mst1x5r347kymb> (raw)
References: <001601c4d815$d8f03430$7201a8c0@mst1x5r347kymb>
<1697.1101956079@sss.pgh.pa.us>
OK, thanks. That seems to make sense.
regards
Iain
----- Original Message -----
From: "Tom Lane" <tgl@sss.pgh.pa.us>
To: "Iain" <iain@mst.co.jp>
Cc: <pgsql-sql@postgresql.org>
Sent: Thursday, December 02, 2004 11:54 AM
Subject: Re: [SQL] invalid 'having' clause
> "Iain" <iain@mst.co.jp> writes:
>> Just a quick question out of curiosity, I was just wondering if this is
>> supposed to be valid sql:
>
>> select count(*) as cnt
>> from sometable
>> group by somecolumn
>> having cnt > 1
>
> No. The HAVING clause logically executes before the SELECT output list
> does, so it makes no sense for it to refer to the output list entries.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
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To: pgsql-sql@postgresql.org
Cc: iain@mst.co.jp, tgl@sss.pgh.pa.us
Subject: Re: invalid 'having' clause
In-Reply-To: <000e01c4d843$07a83890$7201a8c0@mst1x5r347kymb>
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