Orr,
Friday, July 26, 2002, 12:13:17 AM, you wrote:
O> It's my understanding that MySQL will only use one index per table on a
O> given query. For example...
O> SELECT * FROM <HUGE_TABLE>
O> WHERE <col1> = <val1>
O> AND <col2> < <val2>
O> AND <col3> > <val3> ;
O> If col1, col2, and col3 are indexed the query can only use one index, right?
O> Single index access is a problem when you very large tables. What if you
O> have a query with a result set of just 10 rows but there are no indexed
O> columns that can limit the result set to < 1 million rows? I really need to
O> be able to use multiple indexes in a single table query and I don't want to
O> have to perform self joins or create temp tables.
Create index on several columns:
http://www.mysql.com/doc/M/u/Multiple-column_indexes.html
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