SELECT top 50
qt.text AS SQL_text ,
SUM(qs.total_worker_time) AS total_cpu_time,
SUM(qs.execution_count) AS total_execution_count,
SUM(qs.total_worker_time)/SUM(qs.execution_count) AS avg_cpu_time,
COUNT(*) AS number_of_statements
FROM sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
GROUP BY qt.text
ORDER BY avg_cpu_time DESC --统计总的CPU时间 total_cpu_time

SELECT   a.name, b.rows
FROM      sysobjects AS a INNER JOIN
                 sysindexes AS b ON a.id = b.id
WHERE   (a.type = ‘u‘) AND (b.indid IN (0, 1))
ORDER BY b.rows DESC

USE [master]
GO
ALTER DATABASE dbname SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE dbname SET RECOVERY SIMPLE
GO
USE dbname 
GO
DBCC SHRINKFILE (N‘dbname_Log‘ , 0,TRUNCATEONLY)
GO