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You can get away with not adding A + C <= B OR B + C <= A because these statements are implied in A+B<=C.
It is very funny how the checker really does not like any "spelling mistake".
SELECT CASE WHEN A + B<=C 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
FROM TRIANGLES;
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Type of Triangle
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You can get away with not adding A + C <= B OR B + C <= A because these statements are implied in A+B<=C.
It is very funny how the checker really does not like any "spelling mistake".
SELECT CASE WHEN A + B<=C 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 FROM TRIANGLES;