[SQL] LeetCode #511 - Game Play Analysis

SQL 문제 풀이 - 첫 로그인 날짜 찾기단순 SQLD 시험 응시를 넘어 앞으로 꾸준하게 SQL을 공부해보려고 합니다. 그 과정 중 난이도와 상관 없이 1문제라도 꾸준하게 "분석적으로" 풀이해볼 생각입니다. 많관부 문제 설명(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 some..

2025.03.19