• + 70 comments

    My solution

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