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LeetCode

Question 01: 1407. Top Travellers

Table: Users

Column Name Type
id int
name varchar

id is the column with unique values for this table. name is the name of the user.

Table: Rides

Column Name Type
id int
user_id int
distance int
  • id is the column with unique values for this table.
  • user_id is the id of the user who traveled the distance.
  • distance

Write a solution to report the distance traveled by each user.

Return the result table ordered by travelled_distance in descending order, if two or more users traveled the same distance, order them by their name in ascending order.

The result format is in the following example.

Example 1

Input: Users table:

id name
1 Alice
2 Bob
3 Alex
4 Donald
7 Lee
13 Jonathan
19 Elvis

Rides table:

id user_id distance
1 1 120
2 2 317
3 3 222
4 7 100
5 13 312
6 19 50
7 7 120
8 19 400
9 7 230

Output:

name travelled_distance
Elvis 450
Lee 450
Bob 317
Jonathan 312
Alex 222
Alice 120
Donald 0

Explanation

Elvis and Lee traveled 450 miles, Elvis is the top traveler as his name is alphabetically smaller than Lee. Bob, Jonathan, Alex, and Alice have only one ride and we just order them by the total distances of the ride. Donald did not have any rides, the distance traveled by him is 0.

➡️ Solution