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Re: 2 column between optimization
Posted by: Brad Culberson
Date: September 06, 2005 11:17PM

Select Count(*) from geo_feature where latitude BETWEEN .06494 and 0.7384 and longitude between -1.234 and -1.1212

returns only 21,876

Select Count(*) fro geo_feature

returns 2,155,714

That is not even close to 35% yet explain still doesn't use it.

Brad

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