mysql 限制sql执行时间

mysql 5.7.8开始

max_execution_time applies to read-only SELECT statements.

mysql> show variables like 'max_execution_time';       

+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_execution_time | 10000  |
+--------------------+-------+
1 row in set (0.00 sec)

目前只支持select 语句 

或者用如下用法 ：

select /*+ max_execution_time(3000)*/ count(*) from t1 where status=0;