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Re: Re: Re: Problem with database under Win32

by l3nz (Friar)
on Nov 23, 2003 at 19:34 UTC ( #309340=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Problem with database under Win32
in thread Problem with database under Win32

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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