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Surprise Me!
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By bloid
via mysqlperformanceblog.com
Published: Aug 25 2008 / 07:16

MySQL: Multiple column index vs multiple indexes
After my previous post there were questions raised about Index Merge on Multiple Indexes vs Two Column Index efficiency. I mentioned in most cases when query can use both of the ways using multiple column index would be faster but I also went ahead to do some benchmarks today.
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