1.第一種情況是 需要將指定的 注入字符串全部替換掉（僅替換注入的字符串為空）

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    declare @delStr nvarchar(500) 

set @delStr='<script src=http://www.111cn.net/js/common.js></script>' --這里被注入的字段串 

/****************************************/

/**********以下為操作實(shí)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(shù)據(jù)庫教程共有'+convert(varchar(10),@iResult)+'條記錄被更新!!!'

close cur 

deallocate cur 

set nocount off
  

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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）

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    --恢復(fù)被注入數(shù)據(jù)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(shù)據(jù)都為注入數(shù)據(jù)



/**********以下為操作實(shí)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(shù)據(jù)庫教程共有'+convert(varchar(10),@iResult)+'條記錄被更新!!!'

close cur 

deallocate cur 

set nocount off
  

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sql注入數(shù)據(jù)庫修復(fù)方法