How can I list indexes columns readily defined in Oracle?
And how do I use those indexes in a select statement? Something like:
SELECT x, y, z FROM a WITH INDEX(x)...
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http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_1064.htm#i1577532
You don’t have to do anything. If the index will speed up the query, Oracle will use it automatically.