[HackerRank] Revising Aggregations - The Sum Function
2021. 1. 25. 21:51ㆍ데이터베이스/SQL
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Query the total population of all cities in CITY where District is California.
Input Format
The CITY table is described as follows:
SELECT SUM(POPULATION) FROM CITY
WHERE DISTRICT = 'California';'데이터베이스 > SQL' 카테고리의 다른 글
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