1、查询表锁进程id

select   request_session_id   spid,OBJECT_NAME(resource_associated_entity_id) tableName   
from   sys.dm_tran_locks where resource_type='OBJECT'

2、根据进程id kill掉
spid为查询到进程编号

declare @spid int
Set @spid = 56
declare @sql varchar(1000)
set @sql='kill '+cast(@spid as varchar)
exec(@sql)