mysql> select @@tx_isolation;
+-----------------+
| @@tx_isolation |
+-----------------+
| REPEATABLE-READ |
+-----------------+
1 row in set, 1 warning (0.00 sec)
mysql> set session transaction isolation level read committed;
Query OK, 0 rows affected (0.00 sec)
- 与乐观锁配合使用READ-COMMITTED 读取
