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Query acting weird.. larger date range works in 1min 26sec and a smaller range say 1 month - 3 month

Posted By:      Posted Date: September 26, 2010    Points: 0   Category :Sql Server

I have no clue why my query is acting weird

If i try to run it for 1/1/2010 9/30/2010 the query takes around 1min 26 sec and  return around a million rows

and If i run for 8/1/2010 to 8/31/2010 it takes forever to it...

basically i am getting data from 5 tables and putting it in a temp table and then updating that temp table 2-3 times with some information and then displaying it.

I am stumped as to why it works fast for a longer date range and runs the  snail for a small period of time..

I am in the verge of pulling my hair and going crazy..

any help will be appreciated.




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