-- 筛选报错
show processlist where user = 'root';
-- 筛选可用
select * from information_schema.processlist where user = 'root';

报错信息如下：

据说是因为 bug，官方还专门声明过。

​​[Code: 1064, SQL State: 42000] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where user = 'root'' at line 1​​

show processlist 和 select * from information_schema.processlist 的查询结果是一样的，用后面的方法查询就好了。

运行效果图：

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