Query the total population of all cities in CITY where District is California.
The CITY table is described as follows:
Revising Aggregations The Sum Function – Hacker Rank Solution
SELECT SUM(POPULATION) FROM CITY WHERE DISTRICT = 'California';
Disclaimer: The above Problem (Revising Aggregations – The Sum Function) generated by Hackerrank but the Solution is Provided by codeworld19 . This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.