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Re: Re: Re: Problem with database under Win32by l3nz (Friar) |
| on Nov 23, 2003 at 19:34 UTC ( [id://309340]=note: print w/replies, xml ) | Need Help?? |
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I am not sure - if you MAX() an index, you usually get top performance with no disk access at all; in any other case you need a table scan to know all the values, so you can max() them. My actual query is not any way similar to the one I am presenting here (it's a five-page belemoth, just in the case you wonder, even with all repeated subqueries extracted!)
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