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  3. June 2015

Re: sql - why doesn't the query engine know this???

I was going to suggest the same thing (with the added instruction to rerun
the original query back-to-back immediately), but Gerald indicated that he
had built all of the advised indexes. Shouldn't that preclude the need for
the DB engine to build any other temporary indexes?

- Dan

On Thu, Jun 18, 2015 at 3:25 PM, Koester, Michael <mkoester@xxxxxxxxxxxxx>
wrote:

I'm no expert on SQL performance issues, but for a WAG I'd suggest that if
you now take the parens away and try your original statement again w/o
them, you might find it acceptably speedy. Thinking that your 30 minute
run sufficiently trained the SQL engine. Which is why you had such amazing
results with the other variants?

Maybe?

Enjoy,
--Michael Koester


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