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Re: IN does not negate, exists does

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Achilleus Mantzios <achill(at)matrix(dot)gatewaynet(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: IN does not negate, exists does
Date: 2004-02-05 17:03:07
Message-ID: 4075.1076000587@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
Achilleus Mantzios <achill(at)matrix(dot)gatewaynet(dot)com> writes:
> Whereas IN seems to not working ok when negated as shown below:

If the sub-select returns any NULLs then this behavior is per SQL spec.

			regards, tom lane

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