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SELECT CASE
WHEN A + B > C AND A + C > B AND B + C > A THEN CASE WHEN A = B AND B = C AND C = A THEN 'Equilateral' WHEN A = B OR B = C OR C = A THEN 'Isosceles' WHEN A != B AND B != C AND C != A THEN 'Scalene' ELSE 'Not A Triangle' END ELSE 'Not A Triangle'END FROM TRIANGLES;
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Type of Triangle
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SELECT CASE WHEN A + B > C AND A + C > B AND B + C > A THEN CASE WHEN A = B AND B = C AND C = A THEN 'Equilateral' WHEN A = B OR B = C OR C = A THEN 'Isosceles' WHEN A != B AND B != C AND C != A THEN 'Scalene' ELSE 'Not A Triangle' END ELSE 'Not A Triangle'END FROM TRIANGLES;