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avoid file sort for IN() ORDRE BY
Posted by: Xuefer Tinys
Date: January 24, 2005 01:27PM

Select .. From table
Where index_part_1=1
Order index_part_2 DESC
LIMIT 10

is ok, no filesort

but
Select .. From table
Where index_part_1 IN(1,2,3,4)
Order index_part_2 DESC
LIMIT 10

is sick :(
how can i avoid filesort?

having filesort means LIMIT can only be done at SortTime

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avoid file sort for IN() ORDRE BY
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