This Leetcode problem Game Play Analysis I LeetCode Solution is done in SQL.
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Game Play Analysis I LeetCode Solution
Table of Contents
Problem Statement
| Column Name | Type |
| player_id | int |
| device_id | int |
| event_date | date |
| games_played | int |
Activity(player_id, event_date) is the primary key (combination of columns with unique values) of this table. This table shows the activity of players of some games. Each row is a record of a player who logged in and played a number of games (possibly 0) before logging out on someday using some device.
Write a solution to find the first login date for each player. Return the result table in any order.
The result format is in the following example.
Example 1:
Input:
| player_id | device_id | event_date | games_played |
| 1 | 2 | 2016-03-01 | 5 |
| 1 | 2 | 2016-05-02 | 6 |
| 2 | 3 | 2017-06-25 | 1 |
| 3 | 1 | 2016-03-02 | 0 |
| 3 | 4 | 2018-07-03 | 5 |
Output:
| player_id | first_login |
| 1 | 2016-03-01 |
| 2 | 2017-06-25 |
| 3 | 2016-03-02 |
Game Play Analysis I LeetCode Solution MySQL
select
player_id,
min(event_date) as first_login
from
Activity
group by
player_id
order by
player_id;Code language: SQL (Structured Query Language) (sql)