How many indexes will actually get used?

Posted by Ender on Stack Overflow See other posts from Stack Overflow or by Ender
Published on 2010-05-27T05:51:53Z Indexed on 2010/05/27 6:01 UTC
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indexes

I'm writing a page that does very simple search queries, resulting in something like:

SELECT * FROM my_table WHERE A in (a1, a2, a3) AND B in (b1, b2) AND C in (c1, c2, c3, c4) AND

And so on for a variable number of columns, usually ~5. If I create a separate index for each column (one for A, one for B, one for C, not (A,B,C)), will all of them be used in the above query?

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