Carlo Romagnano (10/3/2011)
tommyh (10/3/2011)
There are several problems with this question. One being that you cant declare @Start 2 times.The other being that the answer is wrong. They both perform equally. I have executed the query as is (though with the @Start thing dealt with). With the 2 queries in the opposit order and one at a time. And the time is always roughly 100ms result (give or take 10ms).
I get the same execution plan (2005) for both queries. So im hoping that someone with more knowledge then me can enlighten us.
/T
You should execute the two batch separately, so, you can declare @Start twice.
But, I agree with you: the answere is wrong and hardly to establish which perform better.
I did do that too... but i also wanted to run the code "as is" incase it was something that was dependent on them being run both at the same time.
/T