Question

**Sub Menu**
id|title
1 | Sub A

**Root_Sub**
id|root_id|sub_id
1 |9      |1


**Root Menu**
id|title
9 | Root X

I need to find out the id of a sub menu’s root menu.

To do this I use:

SELECT * FROM sub_menu LEFT JOIN root_sub ON sub_menu.id = root_sub.sub_id

This gives me ‘9’ as the ID.

But I also need to get the root menu’s title, ie getting the title ‘Root X’. How can I do this?

Answer 1

SELECT *
FROM sub_menu
LEFT JOIN root_sub ON sub_menu.id = root_sub.sub_id
LEFT JOIN root_menu ON root_sub.root_id = root_menu.id