Each rider's first trip
For a welcome campaign we need each rider's first trip. For every rider, find the earliest trip by start time; on a tie, take the trip with the smaller id. Return rider_id and trip_id, ordered by rider.
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.
| trip_id | rider_id |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 4 | 3 |
Idħol biex tara l-istorja tas-sottomissjonijiet
IdħolIdħol biex tuża l-Mentor tal-AI
Idħol