2024년 1월 동안 검색하고 공부한 것들을 정리한 내용입니다. pip install with git repo 참고자료 scikit-learn 공식문서 - model_selection.TimeSeriesSplit code 특정 브랜치에서 Git 저장소로부터 pip를 사용하여 패키지를 설치하려면 다음 명령어를...
[Leetcode, PostgreSQL] Investments in 2016
문제 Write a solution to report the sum of all total investment values in 2016 tiv_2016, for all policyholders who: have the same tiv_2015 value as one or more other policyholders, and ...
[Leetcode, PostgreSQL] 511. Game Play Analysis I
문제 Write a solution to find the first login date for each player. Example: Input: Activity table: +-----------+-----------+------------+--------------+ | player_id |...
[Leetcode, PostgreSQL] 197. Rising Temperature
문제 Write a solution to find all dates’ Id with higher temperatures compared to its previous dates (yesterday). Example: Input: Weather table: +----+------------+------...
[프로그래머스, Oracle] 그룹별 조건에 맞는 식당 목록 출력하기
문제 MEMBER_PROFILE와 REST_REVIEW 테이블에서 리뷰를 가장 많이 작성한 회원의 리뷰들을 조회하는 SQL문을 작성해주세요. 회원 이름, 리뷰 텍스트, 리뷰 작성일이 출력되도록 작성해주시고, 결과는 리뷰 작성일을 기준으로 오름차순, 리뷰 작성일이 같다면 리뷰 텍스트를 기준으로 오름차순 정렬해주세요. 예시...
[Leetcode, PostgreSQL] 183. Customers Who Never Order
문제 Write a solution to find all customers who never order anything. Example: Input: Customers table: +----+-------+ | id | name | +----+-------+ | 1 | Joe | ...
[Leetcode, PostgreSQL] 577. Employee Bonus
문제 Write a solution to report the name and bonus amount of each employee with a bonus less than 1000. Example: Input: Employee table: +-------+--------+------------+--...
[Leetcode, PostgreSQL] 570. Managers with at Least 5 Direct Reports
문제 Write a solution to find managers with at least five direct reports. Example: Input: Employee table: +-----+-------+------------+-----------+ | id | name | depa...
[Leetcode, PostgreSQL] 550. Game Play Analysis IV
문제 Write a solution to report the fraction of players that logged in again on the day after the day they first logged in, rounded to 2 decimal places. In other words, you need to count th...
[Leetcode, PostgreSQL] 176. Second Highest Salary & 178. Rank Scores
문제 1 Write a solution to find the second highest salary from the Employee table. If there is no second highest salary, return null (return None in Pandas). Example 1: Inp...