type_of_triangle.sql

-- Challenge: Type of Triangle
SELECT CASE 
    WHEN (A+B<=C OR B+C<=A OR C+A<=B) THEN 'Not A Triangle'
    WHEN (A = B and B = C) THEN 'Equilateral'
    WHEN (A=B OR B=C OR C=A) THEN 'Isosceles'
    ELSE 'Scalene'
END
FROM TRIANGLES;