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Hackerrank | MySQL | Average Population 본문
Average Population
Query the average population for all cities in CITY, rounded down to the nearest integer.
SELECT FLOOR(AVG(population))
FROM city'데이터분석 > practice_query' 카테고리의 다른 글
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| Hackerrank | MySQL | Revising Aggregations - Averages (0) | 2020.08.28 |
| Hackerrank | MySQL | Revising Aggregations - The Sum Function (0) | 2020.08.28 |
| Hackerrank | MySQL | Revising Aggregations - The Count Function (0) | 2020.08.28 |
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