sqlserver 常用语句
2024-08-25 04:58:31
1.查询表中的RID
RID=RowID=(fileID:pageID:slotID)
SELECT sys.fn_PhysLocFormatter(%%physloc%%) AS rid,* FROM person
2.开启DBCC命令语法
--开启
DBCC TRACEON(2588)
--帮助命令
DBCC HELP('IND')
3.开启导出数据页语法
--开启
DBCC TRACEON(3604);
--导出数据页
DBCC PAGE(test,1,262,2);
4.索引的统计信息
DBCC SHOW_STATISTICS(test1,idx_test1);
5.查询锁
SELECT * FROM sys.sysprocesses WHERE spid IN (63,60) SELECT request_session_id, resource_type,
request_status, request_mode,
resource_description, object_name(p.object_id) as object_name,p.index_id
FROM sys.dm_tran_locks left join sys.partitions p
on sys.dm_tran_locks.resource_associated_entity_id = p.hobt_id
WHERE request_session_id IN (63,60)
6.查询解析树/执行计划
SELECT CP.usecounts AS CountOfQueryExecution ,
CP.cacheobjtype AS CacheObjectType ,
CP.objtype AS ObjectType ,
ST.text AS QueryText
FROM sys.dm_exec_cached_plans AS CP
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS ST
WHERE CP.usecounts > 0
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