Many to Many relationships

[Claudio M. E. Bastos Iorio]

What's the proper way to deal with many to many relationships between tables using this library?
Let's say we have three tables:

• Categories
• SubCategories
• Categories_SubCategories (including many to many relationships within the previous tables, referencing their PKs)

Like in this diagram

Any idea?

[yusuf afandi]

You always can use manual queries with this library.

Select * from categories right join categories_subcategoris on categories.id = categories_subcategories.categories_id left join sub_categories on categories_subcategories.subcategories_id = subcategories.id

[Claudio M. E. Bastos Iorio]

You always can use manual queries with this library.

Select * from categories right join categories_subcategoris on categories.id = categories_subcategories.categories_id left join sub_categories on categories_subcategories.subcategories_id = subcategories.id

Great idea, but unfortunately "RIGHT and FULL OUTER JOINs are not currently supported" for sqlite

[yusuf afandi]

You could emulate RIGHT JOIN with LEFT JOIN by swapping the position table when selecting it.

Select * from categories_subcategoris left join categories on categories.id = categories_subcategories.categories_id left join sub_categories on categories_subcategories.subcategories_id = subcategories.id

Hope it help.

[Claudio M. E. Bastos Iorio]

You could emulate RIGHT JOIN with LEFT JOIN by swapping the position table when selecting it.

Select * from categories_subcategoris left join categories on categories.id = categories_subcategories.categories_id left join sub_categories on categories_subcategories.subcategories_id = subcategories.id

Hope it help.

Thanks! it worked!