mos <[EMAIL PROTECTED]> wrote:
> I want to speed up a large query and I noticed if I do an:
>
> Explain select * from LargeTable order by IndexCol1
>
> it always has Extra "Using FileSort", which means it is physically sorting
> the result set.
> I've tried different tables and sorted on different index columns, and it
> is always using FileSort.
>
> How do I get MySQL 4.1.0 to use an index when sorting a MyISAM table?
> Or is Explain broken and does it always report it is using FileSort?
Look at the last paragraph of the following section in the manual:
http://www.mysql.com/doc/en/MySQL_indexes.html
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