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Re: [HACKERS] Re: subquery performance and EXISTS - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [HACKERS] Re: subquery performance and EXISTS
Date
Msg-id 5065.946506347@sss.pgh.pa.us
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In response to Re: [HACKERS] Re: subquery performance and EXISTS  (Bruce Momjian <pgman@candle.pha.pa.us>)
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Bruce Momjian <pgman@candle.pha.pa.us> writes:
> How hard would it be to have the EXISTS be done automatically?  The
> performance problem for subqueries has bothered me for two years now.

I think the ideal solution would involve rewriting the subquery into
a single-level query.  I haven't looked at how hard this would be...
        regards, tom lane

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