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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 B = C OR A = C) THEN 'Isosceles'
ELSE 'Scalene'
END AS TriangleType
FROM TRIANGLES;
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Type of Triangle
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in MySQL:
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 B = C OR A = C) THEN 'Isosceles' ELSE 'Scalene' END AS TriangleType FROM TRIANGLES;