Tags
- Article & User
- Vue
- N:1
- distinct
- SQL
- 그리디
- 스택
- create
- Queue
- 백트래킹
- DB
- 이진트리
- 완전검색
- regexp
- ORM
- migrations
- 트리
- 통계학
- 쟝고
- Tree
- M:N
- delete
- stack
- Django
- 큐
- count
- 뷰
- update
- drf
- outer join
| 일 | 월 | 화 | 수 | 목 | 금 | 토 |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 | 31 |
Notice
Recent Posts
Link
목록2024/10/06 (1)
데이터 분석 기술 블로그
Average Selling Price _ Easy. LeetCode *
SolutionSELECT p.product_id, ROUND(CASE WHEN SUM(u.units) IS NULL THEN 0 ELSE SUM(p.price * u.units) / SUM(u.units) END, 2) AS average_priceFROM Prices pLEFT JOIN UnitsSold uOn p.product_id = u.product_id AND u.purchase_date BETWEEN p.start_date AND p.end_dateGROUP BY p.product_id; Solution 2SELECT p.product_id, ROUND(COALESCE(SUM(p.price * u.units) / SUM(u.uni..
SQL/문제풀이
2024. 10. 6. 18:05