/*--调用示例 select 数据库文件目录=dbo.f_getdbpath('tempdb') ,[默认SQL SERVER数据目录]=dbo.f_getdbpath('') ,[默认SQL SERVER备份目录]=dbo.f_getdbpath(null) --*/ if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_getdbpath]') and xtype in (N'FN', N'IF', N'TF')) drop function [dbo].[f_getdbpath] GO
create function f_getdbpath(@dbname sysname) returns nvarchar(260) as begin declare @re nvarchar(260) if @dbname is null or db_id(@dbname) is null select @re=rtrim(reverse(filename)) from master..sysdatabases where name='master' else select @re=rtrim(reverse(filename)) from master..sysdatabases where name=@dbname
if @dbname is null set @re=reverse(substring(@re,charindex('\',@re)+5,260))+'BACKUP' else set @re=reverse(substring(@re,charindex('\',@re),260)) return(@re) end go
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_backupdb]') and OBJECTPROPERTY(id, N'IsProcedure') = 1) drop procedure [dbo].[p_backupdb] GO
create proc p_backupdb @dbname sysname='', --要备份的数据库名称,不指定则备份当前数据库 @bkpath nvarchar(260)='', --备份文件的存放目录,不指定则使用SQL默认的备份目录 @bkfname nvarchar(260)='', --备份文件名,文件名中可以用\DBNAME\代表数据库名,\DATE\代表日期,\TIME\代表时间 @bktype nvarchar(10)='DB', --备份类型:'DB'备份数据库,'DF' 差异备份,'LOG' 日志备份 @appendfile bit=1 --追加/覆盖备份文件 as declare @sql varchar(8000) if isnull(@dbname,'')='' set @dbname=db_name() if isnull(@bkpath,'')='' set @bkpath=dbo.f_getdbpath(null) if isnull(@bkfname,'')='' set @bkfname='\DBNAME\_\DATE\_\TIME\.BAK' set @bkfname=replace(replace(replace(@bkfname,'\DBNAME\',@dbname) ,'\DATE\',convert(varchar,getdate(),112)) ,'\TIME\',replace(convert(varchar,getdate(),108),':','')) set @sql='backup '+case @bktype when 'LOG' then 'log ' else 'database ' end +@dbname +' to disk='''+@bkpath+@bkfname +''' with '+case @bktype when 'DF' then 'DIFFERENTIAL,' else '' end
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