Type of Triangle in MYSQL

Question

Problem statement:

Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Output one of the followin

Answer 1

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 A=C OR B=C THEN 'Isosceles'
            ELSE 'Scalene'
        END
    ELSE 'Not A Triangle'
END
FROM TRIANGLES 

• Step 1: First we select case to check if given input is a triangle or not

• Step 2: If it is a triangle then check for its type. So first case if all sides are the same, then the triangle type is 'Equilateral', then second case if any two sides are the same then the triangle type is 'Isosceles', otherwise the triangle type is 'Scalene'.