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Re: Optimized join - is CONCAT optimized ?
Posted by: KimSeong Loh
Date: May 12, 2008 03:02AM

when both sides of the comparison are not constant, then no index can be used.

You need at least 1 side of the comparison to be a constant value.

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Optimized join - is CONCAT optimized ?
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May 12, 2008 02:50AM
Re: Optimized join - is CONCAT optimized ?
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