mysql 设置隔离级别

查询显示当前的隔离级别

mysql> show global variables like '%isolation%';
+-----------------------+-----------------+
| Variable_name         | Value           |
+-----------------------+-----------------+
| transaction_isolation | REPEATABLE-READ |
+-----------------------+-----------------+
1 row in set (0.00 sec)

设置隔离级别

mysql> set global transaction_isolation ='read-committed';
Query OK, 0 rows affected (0.00 sec)

mysql> show global variables like '%isolation%';
+-----------------------+----------------+
| Variable_name         | Value          |
+-----------------------+----------------+
| transaction_isolation | READ-COMMITTED |
+-----------------------+----------------+
1 row in set (0.00 sec)

查看隔离级别也可以(前提是知道具体变量名）：

mysql> select @@transaction_isolation;
+-------------------------+
| @@transaction_isolation |
+-------------------------+
| REPEATABLE-READ         |
+-------------------------+
1 row in set (0.00 sec)

参考：

https://www.jianshu.com/p/6738c4b11da8