[Vince]

Quote:

Originally Posted by Yaa did this tutorial work ? Yes. did it's take so much cpu ? No. so it's fine to use .

That's not the point. A tutorial should teach the best method. People reading a tutorial assume that what you've written is the best method to achieve the desired result. I'm sure all that you've written here will work, but as long as you don't understand the concept of keys in SQL you shouldn't write an SQL related tutorial.