[HackerRank] [SQL] Type of Triangle

문제 설명

문제 풀이

SELECT CASE
            WHEN a = b AND b = c THEN "Equilateral"
            WHEN a + b <= c OR c + b <= a OR a + c <= b THEN "Not A Triangle"
            WHEN a = b OR b = c OR a = c THEN "Isosceles"
            ELSE "Scalene"
        END AS abcd
FROM triangles

실행 결과