optimization via selection sets/indices

[Kenneth Brody]

Robert Haussmann wrote:
[... "index scan" not working with the following selection set ...]
> a and b and c and d and (e or f or g)
> a:9:eq:000575
> b:2:ge:07/01/2001
> c:2:le:12/31/2004
> d:16:eq:P
> e:3:eq:P
> f:3:eq:D
> g:3:eq:TR
[...]

Index scan is not available for selection sets containing an "OR".

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| Kenneth J. Brody        | www.hvcomputer.com |                             |
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