cs

https://www.hackerrank.com/challenges/revising-aggregations-the-count-function/problem?isFullScreen=true 

 

Revising Aggregations - The Count Function | HackerRank

Query the number of cities having populations larger than 100000.

www.hackerrank.com

 

Query a count of the number of cities in CITY having a Population larger than 100,000.

 

Input Format

The CITY table is described as follows: 

 

[My Answer]

SELECT COUNT(NAME) 
FROM CITY 
WHERE POPULATION > 100000

난이도 왜 갑자기..?

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