• SQL Server 数据库部分常用语句小结


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    1. 查询某存储过程的访问情况

    SELECT TOP 1000 db_name(d.database_id) as DBName, s.name as 存储名字, s.type_desc as 存储类型, 
    d.cached_time as SP添加到缓存的时间, d.last_execution_time AS 上次执行SP的时间, 
    d.last_elapsed_time as [上次执行SP所用的时间(微秒)], d.total_elapsed_time [完成此SP的执行所用的总时间(微秒)], 
    d.total_elapsed_time/d.execution_count AS [平均执行时间(微秒)], d.execution_count as 自上次编译以来所执行的次数
    FROM sys.procedures s INNER JOIN sys.dm_exec_procedure_stats d
    ON s.object_id = d.object_id where s.name='存储过程的名称'  ----请在此处替换要统计的SP
    ORDER BY d.total_elapsed_time/d.execution_count DESC

     

    2. 查询包含关键字(字符串)的存储过程 SP

    Select distinct o.* from sysobjects o, syscomments s 
    where o.xtype='P' and s.id=o.id and text like '%关键字%' order by o.name

     

    3. 查询包含关键字(字符串)的Job 

    Select * from msdb.dbo.sysjobs 
    where job_id in(Select job_id from msdb.dbo.sysjobsteps where command like '%XXXXXX%' )

     

    4. 查询哪些SQL语句占用CPU的频率高

    SELECT TOP 10 [cpu_time],
    [session_id],
    [request_id],
    [start_time] AS '开始时间',
    [status] AS '状态',
    [command] AS '命令',
    dest.[text] AS 'sql语句', 
    DB_NAME([database_id]) AS '数据库名',
    [blocking_session_id] AS '正在阻塞其他会话的会话ID',
    [wait_type] AS '等待资源类型',
    [wait_time] AS '等待时间',
    [wait_resource] AS '等待的资源',
    [reads] AS '物理读次数',
    [writes] AS '写次数',
    [logical_reads] AS '逻辑读次数',
    [row_count] AS '返回结果行数'
    FROM sys.[dm_exec_requests] AS der 
    CROSS APPLY 
    sys.[dm_exec_sql_text](der.[sql_handle]) AS dest 
    WHERE [session_id]>50 AND DB_NAME(der.[database_id])='数据库名字'  ----请在此处输入要统计的数据库名字
    ORDER BY [cpu_time] DESC

     

    5. DB的单用户模式更新成多用户模式
    alter database 数据库名字 set multi_user;

     

    6. 查询某表的列的详情
    select * from syscolumns where id=object_id('要统计的表') ---请替换

     

    7. 查询当前SQL Server日志信息 

    Exec xp_readerrorlog 0

    其实 xp_readerrorlog 一共有7个参数

    (1)   存档编号;

    (2)  日志类型(1为SQL Server日志,2为SQL Agent日志);

    (3)  查询包含的字符串;

    (4)  查询包含的字符串;

    (5)  LogDate开始时间;

    (6)  结果排序,按LogDate排序(可以为降序"Desc" Or 升序"Asc");

    (7) 结果排序,按LogDate排序(可以为降序"Desc" Or 升序"Asc") 。

     

    8. 查询Job 明细

    SELECT b.[name] [JobName] 
    ,b.enabled [Enabled] 
    ,a.step_id [StepID] 
    ,b.description [JobDescription] 
    ,a.step_name [StepName] 
    ,a.command [Script] 
    FROM msdb.dbo.sysjobsteps a 
    INNER JOIN msdb.dbo.sysjobs b 
    ON a.job_id=b.job_id


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  • 原文地址:https://www.cnblogs.com/hgmyz/p/12351802.html
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