declare @delStr nvarchar(500)    
set @delStr='<script src=http://www.dbjr.com.cn/js/common.js></script>' --這里被注入的字段串    
/****************************************/   
/**********以下為操作實體************/    
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)+'條記錄;'   
end   
fetch next from cur1 into @columnName   

end   
close cur1    
deallocate cur1   
fetch next from cur into @tableName,@tbID    
end   
print '數據庫教程共有'+convert(varchar(10),@iResult)+'條記錄被更新!!!'  
close cur    
deallocate cur    
set nocount off

2.第二種是需要將注入到表中起始位置到最后都刪掉。（此種方法直接找到注入的起始位置，后面的全部刪掉）

復制代碼代碼如下:

--恢復被注入數據庫    
--2013-09-26   
declare @delStr nvarchar(500)    
set @delStr='</title><style>.' --被注入的字段串的開始采樣，從此位置后面的數據都為注入數據   

/**********以下為操作實體************/    
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)   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)+'條記錄;'   
end   
fetch next from cur1 into @columnName   

end   
close cur1    
deallocate cur1   
fetch next from cur into @tableName,@tbID    
end   
print '數據庫教程共有'+convert(varchar(10),@iResult)+'條記錄被更新!!!'  
close cur    
deallocate cur    
set nocount off