Question

I have the following two tables:

auth_user

• id
• username
• is_active (boolean)
  …

useprofile_userprofile

• id
• user_id
  …

How would I find all auth_user objects where is_active=0 and there is no userprofile_userprofile object with that user_id? For example, an entry like this —

auth_user

• id = 1
• username = [e-mail]
• is_active = 0

and userprofile_userprofile has no object where user_id = 1

Answer 1

SELECT
    *
FROM
    auth_user
WHERE
    auth_user.is_active=0
    AND NOT EXISTS
        (
            SELECT
                NULL
            FROM
                userprofile_userprofile 
            WHERE
                userprofile_userprofile.user_id=auth_user.id
        )