#1091

Revenue for Every User

The product mart must show revenue for every user from a_users. Sum amount from a_events only for kind = 'purchase'; if there are no purchases, show 0. Return id and revenue, sorted by id.

Kampjun tal-output mistenni

Dan hu kif tidher tweġiba korretta — l-għadd tar-ringieli huwa tiegħu stess, m'għandux għalfejn jaqbel mat-tabelli tal-iskema.

idrevenue
150
20
350

Ir-riżultat tal-query tiegħek jidher hawn