Type of Triangle

• 문제
  
• 정답

SELECT
    CASE
        WHEN A <= 0 OR B <= 0 OR C <= 0 THEN 'Not A Triangle'
        WHEN A + B <= C OR A + C <= B OR B + C <= A THEN 'Not A Triangle'
        WHEN A = B AND B = C THEN 'Equilateral'
        WHEN A = B OR B = C OR A = C THEN 'Isosceles'
        ELSE 'Scalene'
    END AS TriangleType
FROM
    TRIANGLES;

• 결과