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Datetime index
Posted by: Paul ()
Date: May 23, 2006 10:08AM

I have been looking through explain plans and ne of the primary parts of the where clause is "where cast(mytime as date) = curdate()". I created a index on myTime but it doesnt look like MySQL will use it since im trying to reference myTime as a date as opposed to a datetime. I have a feeling that if I could get an index on this I could cut the runtime in half.

In Oracle I would create a function index when I run into this sort of a problem, I have not been able to find how to do this in MySQL.


If that is not possible im assuming the best solution after that would be to have duplicate data by adding in another column thats just a date and then creating an index on it?

Is this something that might be included in a future release?


I am using InnoDB. on Mysql 4.1

Thanks

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Subject Views Written By Posted
Datetime index 9898 Paul 05/23/2006 10:08AM
Re: Datetime index 5736 Bob Field 05/23/2006 10:14AM
Re: Datetime index 3597 Paul 05/30/2006 12:03PM


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