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Advanced SQL - Displaying Heirarchial Data

I am trying to display a heirarchial category structure from a single table in my database. The database consists of the following fields: category_id, category_name, category_parent_id. The depth should (preferrably) be unlimited.

Although I would prefer to generate everything with a single SQL query - I am open to using a series of functions in ASP if this is not possible. I would also be open to developing a new category structure that is more efficient (if there is such a thing).

Here are the operations that I need to perform:

(1) Display heirarchial list of categories for building a DHTML menu system - obviously I would need to know the level of each category.

(2) Count # of products in all categories off a particular branch. I have a separate table that stores the category-product associations.

(3) Generate a list of all child categories and their full lineage. This would apply to generating a navigational path on a category page (i.e. Home > Category > Subcat > Child) - it would also apply to generating a list of all children to be placed in a selectable form menu.

Does this make sense? Contact me if you have questions. Thanks!

Sorry - I had to change the parameters a bit - ad decidedto start a new project:
http://www.elance.com/projects/view.php?id=8574

Taidot: ASP, XML

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About the Employer:
( 22 reviews ) Carmel, United States

Projektin tunnus: #8481