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Re: ORDER BY doesn't use index
Posted by: Frederic Giudicelli
Date: September 30, 2006 05:53PM

explain SELECT req_id FROM requester WHERE status='1' ORDER BY req_id ASC LIMIT 0,90;
+----+-------------+-----------+------+---------------+--------+---------+-------+--------+-----------------------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-----------+------+---------------+--------+---------+-------+--------+-----------------------------+
| 1 | SIMPLE | requester | ref | status | status | 4 | const | 538427 | Using where; Using filesort |
+----+-------------+-----------+------+---------------+--------+---------+-------+--------+-----------------------------+

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