mysql> SELECT GROUP_CONCAT(CONCAT('KILL ',id,';') SEPARATOR ' ')
FROM information_schema.processlist WHERE user <> 'system user';
-- 查询执行时间超过2分钟的线程,然后拼接成 kill 语句
select concat('kill ', id, ';')
from information_schema.processlist
where command != 'Sleep'
and time > 2*60
order by time desc