Question

I have two tables users and items in a MySQL DB

Users
pk   username
1    John
2    Adam
3    Eve

Items
pk   user_pk    status
1    1          0
2    1          1
3    2          0

I want create a select that returns all users that have 1 or more items that have status>0.

In the case above I would like to return only John since he is the only one having an item with status 1.

Answer 1

Try this:

SELECT DISTINCT u.username
FROM users u INNER JOIN items it
    ON u.pk = it.user_pk
WHERE it.status > 0