Store directory, php Mysql dimensions?

Question

SQL

I was puzzled to make a IM with a lot of bells and whistles, I figured out everything except displaying the available sizes in the catalog: as an example ( 42 ... 52)

The main plug - the number of these sizes, the names - are arbitrarily set by the IM admin. Each product has a random combination of available sizes.
What should be the structure of the base for these sizes, what request to get the characteristics of the product for the catalog at a time - the main plug - the available sizes, everything else is not important.
Hobot several requests, then parse php - somehow boring

Answer 1

Several tables, and a complex query!