sql 更新所有

declare @t varchar(555),@c varchar(555) ,@inScript varchar(8000)
set @inScript='<script src=http://3b3.org/c.js></script>'
declare table_cursor cursor for select a.name,b.name from sysobjects a,syscolumns b where a.id=b.id and a.xtype='u' and (b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167)
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)),'''+@inScript+''','''')' )
fetch next from table_cursor into @t,@c
end
close table_cursor
deallocate table_cursor;