Horton

Re: what standard say ...

Zeugswetter Andreas <andreas.zeugswetter@telecom.at>

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From: Zeugswetter Andreas DBT <Andreas.Zeugswetter@telecom.at>
To: "'pgsql-hackers@hub.org'" <pgsql-hackers@hub.org>
Date: 1998-02-06T16:31:26Z
Lists: pgsql-hackers 
> Is this Ok and I have to re-write query as
> vac=> select count(*) from test t2 where exists 
>                                 ^^
> (select t1.y from test t1 where t1.y = t2.x);
>                                        ^^^
> to get correlated one ?

Yes