"Tadej Guzej" <[EMAIL PROTECTED]> wrote:
> select year(dDate), month(dDate), avg(zPrice), sum(zPrice)
> ... from tmp group by year(dDate), month(dDate);
>
> Is there a way to do this without using a temporary table?
You can use a join.
SELECT *
FROM table1, table2, table3
WHERE month(dDate)=8
AND table1.key = table2.key
AND table1.key = table3.key
GROUP BY ...
The key will likely be your dDate field. And of course you want to make
sure you dDate is indexed, especially for such large tables.
--
Steve Werby
President, Befriend Internet Services LLC
http://www.befriend.com/
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