sql注入数据库修复方法

[sql] 
declare @delStr nvarchar(500)   
set @delStr='<script src=http://www.111cn.net/js/common.js>' --这里被注入的字段串   
/****************************************/  
/**********以下为操作实体************/   
set nocount on  
declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int   
declare @sql nvarchar(2000)  
set @iResult=0   
declare cur cursor for   
select name,id from sysobjects where xtype='U'  
open cur   
fetch next from cur into @tableName,@tbID  
while @@fetch_status=0   
begin   
declare cur1 cursor for   
select name from syscolumns where xtype in (231,167,239,175, 35, 99) and id=@tbID   
open cur1   
fetch next from cur1 into @columnName   
while @@fetch_status=0   
begin   
set @sql='update [' + @tableName + '] set ['+ @columnName +']= SUBSTRING([' + @columnName + '],' + '1, PATINDEX( ''%' + @delStr + '%'', [' + @columnName + '])-1) + ' + 'SUBSTRING([' + @columnName + '], PATINDEX( ''%' + @delStr + '%'', [' + @columnName + ']) + ' + 'len(''' + @delStr + ''') , datalength([' + @columnName + '])) where ['+@columnName+'] like ''%'+@delStr+'%'''  
exec sp_executesql @sql   
set @iRow=@@rowcount   
set @iResult=@iResult+@iRow   
if @iRow>0   
begin   
print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;'   
end   
fetch next from cur1 into @columnName  
  
end   
close cur1   
deallocate cur1  
fetch next from cur into @tableName,@tbID   
end   
print '





数据库教程共有'+convert(varchar(10),@iResult)+'条记录被更新!!!'  
close cur   
deallocate cur   
set nocount off  

[sql] 
--恢复被注入数据库   
--2013-09-26  
declare @delStr nvarchar(500)   
set @delStr='