From: Tom Lane <tgl@sss.pgh.pa.us>
To: Jaime Casanova <el_vigia_ec@hotmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: query with =ALL
Date: Mon, 14 Jun 2004 15:41:40 -0400
Message-ID: <5688.1087242100@sss.pgh.pa.us> (raw)
In-Reply-To: <BAY8-F35GuluhfJpQPr0002c817@hotmail.com>
References: <BAY8-F35GuluhfJpQPr0002c817@hotmail.com>
"Jaime Casanova" <el_vigia_ec@hotmail.com> writes:
> AND
> CPA.cur_paralelo = ALL (SELECT cur_paralelo FROM aca_t_curso ...)
Wait a second ... we are all overthinking the problem. The subselect
returns three *different* values. It is not possible for any
CPA.cur_paralelo values to be simultaneously equal to all three.
So this test certainly fails at every row of CPA.
Perhaps you meant "= ANY"?
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, el_vigia_ec@hotmail.com
Subject: Re: query with =ALL
In-Reply-To: <5688.1087242100@sss.pgh.pa.us>
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