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| 发表于 2009-02-02 09:01:15 楼主 | |
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mysql> explain select * from pdf use index (p_id) where p_id>10000; ERROR 1176 (42000): Key 'p_id' doesn't exist in table 'pdf' use_index(key_list) 其中的key_list是如何来的 |
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楼主热贴 |
| 发表于 2009-02-02 09:01:15 1楼 | |
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键名啊。。不是字段名 |
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| 发表于 2009-02-02 09:01:15 2楼 | |
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mysql> show index from pdf; +-------+------------+-------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ | Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | +-------+------------+-------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ | pdf | 0 | PRIMARY | 1 | p_id | A | 936493 | NULL | NULL | | BTREE | | | pdf | 1 | p_hotstatus | 1 | p_hotstatus | A | 3 | NULL | NULL | YES | BTREE | | | pdf | 1 | c_id | 1 | c_id | A | 395 | NULL | NULL | | BTREE | | | pdf | 1 | l_id | 1 | l_id | A | 37459 | NULL | NULL | YES | BTREE | | | pdf | 1 | p_time | 1 | p_time | A | 72037 | NULL | NULL | | BTREE | | | pdf | 1 | u_id | 1 | u_id | A | 9 | NULL | NULL | | BTREE | | | pdf | 1 | p_status | 1 | p_status | A | 2 | NULL | NULL | YES | BTREE | | +-------+------------+-------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ 7 rows in set (0.00 sec) 其中的Key_name段就是 |
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