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Re: optimizing count statement
Posted by: Karolis
Date: October 12, 2005 08:05AM

mysql> SELECT COUNT(*) FROM (
-> SELECT 1 FROM INDEX_KEYS WHERE KeywordID IN (7, 8) GROUP BY DocumentID HAVING COUNT(DISTINCT KeywordID) = 2) AS x;
+----------+
| COUNT(*) |
+----------+
| 6204 |
+----------+
1 row in set (0.04 sec)


goodness :))))))))
Can you please explain why this is happening?

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