that was indeed the case. Did not think to look at that, thanks much for the kick :)
alan
On May 7, 2013, at 7:30 PM, Tom Lane wrote:
> Alan Nilsson <anilsson@apple.com> writes:
>> Could someone explain to me what I'm missing here.
>
> Probably there are some NULLs in dasp.asp_id. NOT IN cannot succeed
> when there are any nulls in the sub-select result: per SQL spec, the
> outcome of such a test can only be FALSE or NULL. If that isn't the
> behavior you want, try recasting the query to use NOT EXISTS.
>
> regards, tom lane
>
>
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