1.命令是用来查看当前出现的锁
SELECT * FROM information_schema.INNODB_LOCKs;
2.命令是用来查看锁等待的对应关系
SELECT * FROM information_schema.INNODB_LOCK_waits;
3.命令是用来查看当前运行的所以事务：
select * from information_schema.innodb_trx
3.
