Hello,

I have a a large a table which a field called date, type date.

When I select a smaller range e.g 3 months system uses the index 'date'.
That is for let's say 2 million rows.

If I select wider date range mysql stops using key. It says possible key
"date", but do not use it and goes over all 28 Million rows.

If I use "force index" the query becomes even slower.

Table type is Myisam.

Please advise what should I tune so mysql uses the index without force
index and query becomes faster.


Thanks :-)

Peter


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