troubleshooting Question

MySQL query - dealing with parent- child relations in a table (multiple levels)

Avatar of meteorelec
meteorelecFlag for Ireland asked on
MySQL ServerSQL
2 Comments1 Solution11710 ViewsLast Modified:
Hi,

I have table [categories] - this table contains all the categories in my product catalogue.

there table has a number of fields - the 2 of importance here are the categories id (Unique)
and the parent_id

The top level categories have a blank parent - this is because they are not contained inside another category , there is only 12 of these , the remaining 5,000 categories have a parent id,

The parent id on a record say "This category(category_id) is contained inside this category(parent_id) "

What i am looking for is a well optimised query that will return all the category_id's that are inside a given category id

i.e. child categories, child child categories , child child child categories - an so on.
Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 1 Answer and 2 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 2 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros