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Hackerrank | MySQL | Japan Population 본문
Japan Population
Japan Population | HackerRank
Query to the sum of the populations of all Japanese cities in CITY.
www.hackerrank.com
Query the sum of the populations for all Japanese cities in CITY. The COUNTRYCODE for Japan is JPN.
SELECT SUM(population)
FROM CITY
WHERE countrycode = 'JPN''데이터분석 > practice_query' 카테고리의 다른 글
| Hackerrank | MySQL | The Blunder (0) | 2020.08.28 |
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| Hackerrank | MySQL | Average Population (0) | 2020.08.28 |
| Hackerrank | MySQL | Revising Aggregations - Averages (0) | 2020.08.28 |
| Hackerrank | MySQL | Revising Aggregations - The Sum Function (0) | 2020.08.28 |