On Sat, Sep 6, 2008 at 1:03 PM, NickC <[EMAIL PROTECTED]> wrote: > > I like your theory but unfortunately still doesn't help speed this up. > According to SYS(3054) it is being optimised but even so still takes almost > a minute to extract one record. >
The fact that selecting on the full, wide table is slow, while instantaneous extraction of the single column table occurs points to an issue with the structure of the table and its indexes. Do you have a tag on DELETED()? Your test may also tilt the playing field a little: when you create the test table, you've cached all the file blocks in memory. You don't show your work, but I presume you create an index on the single column. Do you also create one on DELETED()? And are your running your tests all local on the machine that has the DBFs on it, or over a network? Is the IIS/ADO/SQL solution also reading from a local DBF or over a network? -- Ted Roche Ted Roche & Associates, LLC http://www.tedroche.com _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[EMAIL PROTECTED] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
