Data explorer challenge: Generate list of members by location

Dati e reportistica
6

Forse non capisco la domanda, ma se la capisco, allora

SELECT u.username
    FROM users u
    LEFT JOIN user_profiles up ON u.id = up.user_id
    WHERE location = 'Pakistan'

o, ugualmente,

SELECT username from user_profiles, users
where user_id = id and location = 'Pakistan'

Nota che il Data Explorer non accetta le virgolette doppie come delimitatori.