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 or A+C <= B or B+C <= A then "Not A Triangle"
when A=B and B=C then "Equilateral"
when A=B or A=C or B=C then "Isosceles"
else "Scalene"
end as triangles_type
from TRIANGLES;