HackerRank MySQL - Type of Triangle




Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Output one of the following statements for each record in the table:



  1. /*
  2. Enter your query here and follow these instructions:
  3. 1. Please append a semicolon ";" at the end of the query and enter your query in a single line to avoid error.
  4. 2. The AS keyword causes errors, so follow this convention: "Select t.Field From table1 t" instead of "select t.Field From table1 AS t"
  5. 3. Type your code immediately after comment. Don't leave any blank line.
  6. */
  7. SELECT CASE
  8. WHEN A + B <= C
  9. OR A + C <= B
  10. OR B + C <= A THEN 'Not A Triangle'
  11. WHEN A = B
  12. AND B = C THEN 'Equilateral'
  13. WHEN A = B
  14. OR A = C
  15. OR B = C THEN 'Isosceles'
  16. ELSE 'Scalene'
  17. END
  18. FROM TRIANGLES;
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