复制代码 代码如下:

declare @t varchar(255),@c varchar(255)
declare table_cursor cursor for select a.name,b.name
from sysobjects a,syscolumns b ,systypes c
where a.id=b.id and a.xtype=\'u\' and c.name
in (\'char\', \'nchar\', \'nvarchar\', \'varchar\',\'text\',\'ntext\'/* --这里如果你的text(ntext)类型没有超过8000(4000)长度，才可以使用*/)
declare @str varchar(500),@str2 varchar(500)
set @str=\'<script src=fasfdasfasf ></script> \' /*这里是你要替换的字符*/
set @str2=\'\' /*替换后的字符*/
open table_cursor
fetch next from table_cursor
into @t,@c while(@@fetch_status=0)
begin exec(\'update [\' + @t + \'] set [\' + @c + \']=replace(cast([\' + @c + \'] as varchar(8000)),\'\'\'+@str+\'\'\',\'\'\'+ @str2 +\'\'\')\')