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" &amp;lt;Vicki&amp;gt; The first thought that comes to mind is that I was always taught not to use select/omit logicals. &amp;lt;/Vicki&amp;gt; this doesn't change with sparse indexes coming up! One important reason is, that having lots of sparse indexes the cost of maintenance in case of write/delete operations might be much higher than the benefits for reading. &amp;lt;Vicki&amp;gt; I'm not a fan of creating sparse indexes to replace select/omit logicals. &amp;lt;/Vicki&amp;gt; The one and only benefit for the replace might be, that you could get rid of DDS an..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://archive.midrange.com/midrange-l/201405/msg00068.html>