[杂] 一些常用的SQL归类之一

整理了一大坨的常用SQL语句，以方便自己需要用的时候查找。

查看锁

SELECT  [request_session_id] ,
        c.[program_name] ,
        DB_NAME(c.[dbid]) AS dbname ,
        [resource_type] ,
        [request_status] ,
        [request_mode] ,
        [resource_description] ,
        OBJECT_NAME(p.[object_id]) AS objectname ,
        p.[index_id]
FROM    sys.[dm_tran_locks] AS a
        LEFT JOIN sys.[partitions] AS p ON a.[resource_associated_entity_id] = p.[hobt_id]
        LEFT JOIN sys.[sysprocesses] AS c ON a.[request_session_id] = c.[spid]
WHERE   c.[dbid] = 19
ORDER BY [request_session_id] ,
        [resource_type]

查看Page上的数据

DBCC PAGE([dbname|dbid],1,14464,3)

 

读取错误日志

sp_readerrorlog

查看请求，查看连接，查看Session执行的语句

SELECT  *
FROM    sys.dm_exec_requests

SELECT  *
FROM    sys.dm_exec_connections
ORDER BY net_transport

DBCC INPUTBUFFER(69)

SELECT  [request_session_id] ,
        c.[program_name] ,
        DB_NAME(c.[dbid]) AS dbname ,
        [resource_type] ,
        [request_status] ,
        [request_mode] ,
        [resource_description] ,
        OBJECT_NAME(p.[object_id]) AS objectname ,
        p.[index_id]
FROM    sys.[dm_tran_locks] AS a
        LEFT JOIN sys.[partitions] AS p ON a.[resource_associated_entity_id] = p.[hobt_id]
        LEFT JOIN sys.[sysprocesses] AS c ON a.[request_session_id] = c.[spid]
WHERE   c.[dbid] = 5
ORDER BY [request_session_id] ,
        [resource_type]

查看Block

SELECT  *
FROM    sys.sysprocesses WITH ( NOLOCK )
WHERE   blocked <> 0

最耗CPU的语句查询

SELECT TOP ( 10 )
        qs.last_execution_time ,
        SUBSTRING(ST.text, ( QS.statement_start_offset / 2 ) + 1,
                  ( ( CASE statement_end_offset
                        WHEN -1 THEN DATALENGTH(st.text)
                        ELSE QS.statement_end_offset
                      END - QS.statement_start_offset ) / 2 ) + 1) AS statement_text ,
        execution_count ,
        total_worker_time / 1000 AS total_worker_time_ms ,
        ( total_worker_time / 1000 ) / execution_count AS avg_worker_time_ms ,
        total_logical_reads ,
        total_logical_reads / execution_count AS avg_logical_reads ,
        total_elapsed_time / 1000 AS total_elapsed_time_ms ,
        ( total_elapsed_time / 1000 ) / execution_count AS avg_elapsed_time_ms ,
        qp.query_plan
FROM    sys.dm_exec_query_stats qs
        CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st
        CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp
WHERE   qs.last_worker_time > 3000
ORDER BY qs.last_execution_time DESC

参考Blog:

关于Block http://www.cnblogs.com/fygh/archive/2012/01/17/2324926.html

关于性能 http://www.cnblogs.com/Amaranthus/archive/2012/03/07/2383551.html

常用语句 http://www.cnblogs.com/kerrycode/p/3153321.html

未完待续……