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Tuning a query help


Tuning a query help

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Kwisatz78
Kwisatz78
SSChasing Mays
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Hi all thanks for the replies I will be testing and posting results back as soon as I can. Its our last day at work here and I have various tasks I need to get done before we go on holiday, so have a Merry Christmas and Happy New Year, and see you in 2013.

Thanks
Sean Lange
Sean Lange
SSCoach
SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)

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Bhuvnesh (12/20/2012)
Bhuvnesh (12/20/2012)
Sean Lange (12/20/2012)

pr.price <> 9999.99


Try making this a SARGable predicate by removing the <> and replacing with > OR <

pr.price < 9999.99 OR pr.price > 9999.99
new learning for me. i am straight away going to test it :-)

Sean , i did a test btu result are not impressive or i am overlooking somthing (OR amount of data is small ? )




It was low hanging fruit and only likely a piece of the puzzle. We did get ddl but without any data it is hard to test performance.

The reason you are not seeing any difference in your two queries is because you are selecting only from a single table which is going to be an index scan. Are you familiar with SARGability? Not equals is a nonSARGable predicate. Do a quick search for sargable and you will find lots of material covering the topic.

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