网站注入与防护（五）创建一个触发器，只要有</script>就不给插入，对性能会有点影响

create trigger tr_table_insertupdate
on tablename
for insert,update
as
if exists (
select 1 from inserted 
where data like '%</script>%'
)
begin
       RAISERROR ('不能修改或者添加',16,1);
       ROLLBACK TRANSACTION
end
go