Re: [HACKERS] WHERE vs HAVING - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] WHERE vs HAVING
Date
Msg-id 199907070340.XAA02805@candle.pha.pa.us
Whole thread Raw
In response to WHERE vs HAVING  (jwieck@debis.com (Jan Wieck))
List pgsql-hackers
>     Planner guru's please!
> 
>     I  wonder  what makes the difference between WHERE and HAVING
>     that causes HAVING to accept aggregates while WHERE  doesn't.
>     It  would  be  extremely nice if it's possible to teach WHERE
>     how to handle aggregates properly. Having to push  them  into
>     subselects during rewrite if a views aggregate column appears
>     in the WHERE clause is a total mess.

SQL requires the restriction.

--  Bruce Momjian                        |  http://www.op.net/~candle maillist@candle.pha.pa.us            |  (610)
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