문제
입력 코드
1.
SELECT P.product_name, S.year, S.price
FROM Sales AS S
LEFT JOIN Product AS P
ON S.product_id = P.product_id
2.
SELECT P.product_name, S.year, S.price
FROM Sales AS S, Product AS P
WHERE S.product_id = P.product_id
3.
SELECT P.product_name, S.year, S.price
FROM Sales AS S
JOIN Product AS P
USING (product_id)
코드 설명
#SELECT #JOIN #LEFT JOIN #WHERE #USING
문제 출처
Product Sales Analysis I - LeetCode
Can you solve this real interview question? Product Sales Analysis I - Table: Sales +-------------+-------+ | Column Name | Type | +-------------+-------+ | sale_id | int | | product_id | int | | year | int | | quantity | int | | price | int | +-----------
leetcode.com
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