On Wed, Dec 17, 2008 at 8:48 AM, Ed Leafe <[email protected]> wrote: > On Dec 16, 2008, at 11:09 PM, Stephen Russell wrote: > >> Sorry it has nothing to do with length, and everything to do with >> position in the index. When there is no space available it has to >> make space by separating the file, inserting new space and then filing >> in index data. > > > Two things are wrong with that. First, a longer key will fill up that > space faster, requiring more frequent file splits. Second, depending > on the type of index used, longer keys can either take up more memory > per key, limiting the number that can be kept in memory. Finally, many > string comparison routines' efficiency is linear with string length. ---------------------------------
This has been chopped up but it was focused on GUID values for your pointer/key. Int values really suck when your are managing multiple sites or roaming laptops. So the column is going to be the same length. -- Stephen Russell Sr. Production Systems Programmer Mimeo.com Memphis TN 901.246-0159 _______________________________________________ Post Messages to: [email protected] 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.
