想要观察一个SQL语句运行过程中申请了哪些锁,打开一个查询写入要被观察的SQL
--查询当前会话的sessionID SELECT @@SPID SET TRANSACTION ISOLATION LEVEL REPEATABLE READ BEGIN TRAN SELECT [data] FROM [MyTable] WHERE [index_column]>30 AND [index_column]<40 ---执行了上面的SQL,观察完后再回滚 ROLLBACK
在打开另外一个查询,查询上个语句运行的锁情况
--填入要观察的sesionID, SELECT request_session_id, resource_type, request_status, request_mode, resource_description, OBJECT_NAME(p.object_id) as object_name, i.name, p.index_id FROM sys.dm_tran_locks t LEFT JOIN sys.partitions p on t.resource_associated_entity_id=p.hobt_id LEFT JOIN sys.indexes i on i.object_id=p.object_id and p.index_id=i.index_id WHERE request_session_id=88 ORDER BY request_session_id,resource_type
执行计划+锁情况 可以推断出执行的过程。
原文:https://www.cnblogs.com/JinweiChang/p/12148923.html