常用SQL语句

1.查询所有表的数据量

　　

 SELECT A.NAME ,B.ROWS  FROM sysobjects  A JOIN sysindexes B
 ON A.id = B.id WHERE A.xtype = 'U' AND B.indid IN(0,1) 
 ORDER BY B.ROWS DESC

 

2.清理数据库日志

USE [master]

GO
ALTER DATABASE TEST SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE TEST SET RECOVERY SIMPLE
GO
USE SHSDBarCode 

GO
DBCC SHRINKFILE (N'TEST _log' , 2048,TRUNCATEONLY)
GO
USE [master]
GO
ALTER DATABASE TEST  SET RECOVERY FULL WITH NO_WAIT
GO
ALTER DATABASE TEST  SET RECOVERY FULL
GO

3.查询包含的数据文本

select * 
from sysobjects o, syscomments s 
where o.id = s.id 
and text like '%Spend%' 
and o.xtype = 'P'

4.查询数据库操作

　　

SELECT 
       ST.text AS '执行的SQL语句',
       QS.creation_time AS '执行时间' ,  
       QS.*
FROM   sys.dm_exec_query_stats QS
       CROSS APPLY 
sys.dm_exec_sql_text(QS.sql_handle) ST
WHERE  QS.creation_time BETWEEN '2020-07-08 00:00:00' AND '2020-07-08 08:59:59' 
and st.text like '%TEST1%'
ORDER BY
     QS.total_elapsed_time DESC