SQL Server 2008 R2：快速清除日志文件的方法
本例，快速清理“students”数据库的日志，清理后日志文件不足1M。
USE [master]
GO
ALTER DATABASE students SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE students SET RECOVERY SIMPLE
GO
USE students
GO
--此处需要注意，并非所有数据库的日志文件名都是“数据库名_log”
DBCC SHRINKFILE (N'students_log' , 0,TRUNCATEONLY)
GO
USE [master]
GO
ALTER DATABASE students SET RECOVERY FULL WITH NO_WAIT
GO
ALTER DATABASE students SET RECOVERY FULL
GO
--查询指定数据库的日志文件名称
USE students
GO
SELECT name FROM SYS.database_files WHERE type_desc='LOG'
