MySQL数据库中查询表是否被锁以及解锁

1.查看表被锁状态

2.查看造成死锁的sql语句

3.查询进程

4.解锁(删除进程)

5.查看正在锁的事物  (8.0以下版本)

6.查看等待锁的事物 (8.0以下版本)

elect 0 ,blocked

from (select * from sysprocesses where blocked>0 ) a

where not exists(select * from (select * from sysprocesses where blocked>0 ) b

where a.blocked=spid)

union select spid,blocked from sysprocesses where blocked>0

OPEN s_cur

FETCH NEXT FROM s_cur INTO @spid,@bl

WHILE @@FETCH_STATUS = 0

begin

if @spid =0

select ' 引起数据库死锁的是: '+ CAST(@bl AS VARCHAR(10)) + ' 进程号, 其执行的SQL 语法如下'

else

select ' 进程号SPID ：'+ CAST(@spid AS VARCHAR(10))+ ' 被' + ' 进程号SPID ：'+ CAST(@bl AS VARCHAR(10)) +' 阻塞, 其当前进程执行的SQL 语法如下'

DBCC INPUTBUFFER (@bl )

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