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Re: does this "top-200" query do a table scan
Posted by: Rick James
Date: October 31, 2015 05:51PM

I agree that the ORDER BY is mandatory.

Use EXPLAIN SELECT ... to see if it is a table scan. It will say "All" if it is.

But note... The optimizer may decide that a table scan is faster than bouncing between the index and the data.

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Re: does this "top-200" query do a table scan
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October 31, 2015 05:51PM


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