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wanglei2924 发表于 2013-1-15 16:31 ![]()
谢谢你的回复,我刚explain下,使用的确实是PRIMARY
mysql> explain select * from t where a < 4 for u ...
哈哈,我这边测试的没问题啊,兄弟;
session 2:
mysql> use test;
Database changed
mysql>
mysql> begin;
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 select 8,1,1;
Query OK, 1 row affected (0.01 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql> select * from t1;
+----+------+------+
| a | b | c |
+----+------+------+
| 1 | 1 | 1 |
| 2 | 1 | 1 |
| 3 | 1 | 1 |
| 4 | 1 | 1 |
| 5 | 1 | 1 |
| 6 | 1 | 1 |
| 7 | 1 | 1 |
| 8 | 1 | 1 |
| 10 | 1 | 1 |
| 11 | 1 | 1 |
| 12 | 1 | 1 |
| 14 | 1 | 1 |
+----+------+------+
12 rows in set (0.00 sec)
mysql> show variables like '%iso%';
+---------------+-----------------+
| Variable_name | Value |
+---------------+-----------------+
| tx_isolation | REPEATABLE-READ |
+---------------+-----------------+
1 row in set (0.00 sec)
mysql>
数据库版本是5.5.13的! |
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