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Re: Please help :)
Posted by: Sergey Petrunya
Date: April 21, 2005 03:09PM

How many records are in the table?
What does EXPLAIN SELECT .. FROM ipcountryNEW FORCE INDEX (`PRIMARY`) show?

One of the problems here is that condition "ipFROM>=1142156934 AND ipTO<=1142156934" is
converted to search predicate
(ipFROM, ipTO) < (1142156934, -inf)
That is, only first part of the condition can be used for index.

Are the intervals in the ipcountryNEW table disjoint? If yes, you could add LIMIT 1 to the query. This will force index usage (and it will be fast).

Sergey Petrunia, Software Developer
MySQL AB, www.mysql.com
My blog: http://s.petrunia.net/blog

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Please help :)
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Heather Walker
April 18, 2005 04:18PM
Re: Please help :)
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Sergey Petrunya
April 21, 2005 03:09PM


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