SQL Server 锁表、查询被锁表、解锁有关语句

--锁表（其它事务不能读、更新、删除）BEGIN TRANSELECT * FROM <表名> WITH(TABLOCKX);WAITFOR delay '00:00:20'COMMIT TRAN--锁表（其它事务只能读，不能更新、删除）BEGIN TRANSELECT * FROM <表名> WITH(HOLDLOCK);WAITFOR delay '00:00:20'COMMIT TRAN--锁部分行BEGIN TRANSELECT * FROM <表名>  WITH(XLOCK) WHERE ID IN ('81A2EDF9-D1FD-4037-A17B-1369FD3B169B');WAITFOR delay '00:01:20'COMMIT TRAN--查看被锁表select   request_session_id   锁表进程,OBJECT_NAME(resource_associated_entity_id) 被锁表名  from   sys.dm_tran_locks where resource_type='OBJECT';--解锁declare @spid  intSet @spid  = 55 --锁表进程declare @sql varchar(1000)set @sql='kill '+cast(@spid  as varchar)exec(@sql)