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Revising Aggregations - The Sum Function Problem Revising Aggregations - The Sum Function | HackerRank Query the total population of all cities for in the District of California. www.hackerrank.com Query the total population of all cities in CITY where District is California. Solution SELECT SUM(population) FROM city WHERE district = 'California'

Revising Aggregations - The Count Function Problem 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 than100,000. - solution SELECT COUNT(*) FROM city WHERE population > 100000

Employee Salaries Problem Employee Salaries | HackerRank Print the names of employees who earn more than $2000 per month and have worked at the company for less than 10 months. www.hackerrank.com Write a query that prints a list of employee names (i.e.: the name attribute) for employees in Employee having a salary greater than $2000 per month who have been employees for less than 10 months. Sort..

Employee Names Problem Write a query that prints a list of employee names (i.e.: the name attribute) from the Employee table in alphabetical order. - solution SELECT name FROM employee ORDER BY name ASC

Higher Than 75 Marks Problem Higher Than 75 Marks | HackerRank Query the names of students scoring higher than 75 Marks. Sort the output by the LAST three characters of each name. www.hackerrank.com Query the Name of any student in STUDENTS who scored higher than Marks. Order your output by the last three characters of each name. If two or more students both have names ending in the same last th..

Weather Observation Station 12 Problem Query the list of CITY names from STATION that do not start with vowels and do not end with vowels. Your result cannot contain duplicates. - Solution SELECT DISTINCT city FROM station WHERE city NOT REGEXP '^[aeiou]' AND city NOT REGEXP '[aeiou]$' SELECT Distinct City FROM Station WHERE City NOT rLike '^[aeiou]' AND City NOT rLike '[aeiou]$'

Weather Observation Station 11 Problem Weather Observation Station 11 | HackerRank Query a list of CITY names not starting or ending with vowels. www.hackerrank.com Query the list of CITY names from STATION that either do not start with vowels or do not end with vowels. Your result cannot contain duplicates. Solution SELECT DISTINCT CITY FROM STATION WHERE SUBSTR(CITY,1,1) NOT IN ('a','e','i','o..

Weather Observation Station 10 Problem Weather Observation Station 10 | HackerRank Query a list of CITY names not ending in vowels. www.hackerrank.com Query the list of CITY names from STATION that do not end with vowels. Your result cannot contain duplicates. Solution SELECT DISTINCT CITY FROM STATION WHERE CITY NOT LIKE '%a' AND CITY NOT LIKE '%e' AND CITY NOT LIKE '%i' AND CITY NOT LIKE '%o' ..