Can Multiple Indexes Work Together?

Question

Suppose I have a database table with two fields, \"foo\" and \"bar\". Neither of them are unique, but each of them are indexed. However, rather than being indexed together, th

Answer 1

You can provide hints as to which index to use. I'm not familiar with Oracle, but in Mysql you can use USE|IGNORE|FORCE_INDEX (see here for more details). For best performance though you should use a combined index.