>> 
>> We only support subqueries in the target list.  May have that expaned
>> for 6.4.
>
>Not sure that EXISTS is allowed in target list...

The standard does not allow it, but it might be a nifty feature if it returned a boolean true or false.

Andreas




Wed, 15 Jul 1998 18:39:09 +0200
Andreas Zeugswetter <andreas.zeugswetter@telecom.at>
AW: [HACKERS] "internal error" triggered by EXISTS()
Andreas Zeugswetter wrote:
> 
> >>
> >> We only support subqueries in the target list.  May have that expaned
> >> for 6.4.
> >
> >Not sure that EXISTS is allowed in target list...
> 
> The standard does not allow it, but it might be a nifty feature if 
> it returned a boolean true or false.

I don't foresee problems with this.
BTW, shouldn't we allow the same for IN, ANY and ALL?

select ..., x in (...), ...

Vadim

Thu, 16 Jul 1998 01:53:41 +0800
Vadim Mikheev <vadim@krs.ru>
Re: AW: [HACKERS] "internal error" triggered by EXISTS()