On 2008-09-12 15:52, Jack Orenstein wrote:
Sorry, I misspoke. I have an index, but preferred doing a scan without
the index in this case.
Why?
The only reason I can think of is that you'd like to avoid disk seeking.
But you get at most 1 row in 30 seconds, so disk latency (only several
milliseconds) can be ignored.
Regards
Tometzky
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