sql with order a desc, b desc

[reydp]

Good luck!

I'm not sure if you're serious or not.
Because sometimes I used "Good Luck" to test the poster.

With your suggestion, creating pivot table will help improve of the query.

But what will I do to maintain the table afterthen?
You're suggesting me to solve a problem by adding another problem.

Anyway, I find way to resolve the problem.

Thanks for the "Good luck".