Pull out data from different tables in mysql

Question

I have a question regarding pulling data from different tables in MYSQL . I'm sorry if this question has already been answered elsewhere, but I just can't seem to make sense of it.

I want to pull out the categories that are bound to the user's chosen newspapers.

I've got a table that tracks the user's chosen newspapers with user_id and newspaper_id . A table with the newspapers and another table with the categories . And at last a table which has both the newspaper_id and the category_id .

Is this possible to do with a single query? I'm really no good with sub select queries. Thanks in advance!

Answer 1

Joining is probably the way to go:

SELECT c.*
FROM   categories c
JOIN   newspaper_categories nc ON c.category_id = nc.categroy_id
JOIN   newspaper_users nu ON nu.newspaper_id = nc.newspaper_id
WHERE  nu.user_id = <some id>