Description

Submission

select if(A + B > C and B + C > A and A + C > B, if(A = B and B = C, 'Equilateral', if(A = B or B = C or A = C, 'Isosceles', 'Scalene')), 'Not A Triangle') from triangles;

Reference

1. https://nifannn.github.io/2017/10/21/SQL-Notes-Hackerrank-Type-of-Triangle/
2. https://www.w3schools.com/sql/func_mysql_if.asp