Type of Triangle solution with reference on better one found by someone

Author: jeanbou

HackerRank/SQL/sql021_WhatTypeOfTriangle.sql

@@ -0,0 +1,10 @@
+-- Hint: Better solution https://github.com/BlakeBrown/HackerRank-Solutions/blob/master/SQL/2_Advanced%20Select/01_Type%20of%20Triangle/Type%20of%20Triangle.mysql
+SELECT
+CASE
+ WHEN A = B AND B = C THEN 'Equilateral'
+ WHEN ( (A+B)<=C OR (A+C)<=B OR (B+C)<=A ) THEN 'Not A Triangle'
+ WHEN (NOT ( (A+B)<=C OR (A+C)<=B OR (B+C)<=A )) AND (A=B OR C=B OR A=C) THEN 'Isosceles'
+ ELSE 'Scalene'
+ END
+END
+FROM TRIANGLES