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?
TIA
Mike
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