SQL problem - Triangle Judgement

Problem

Query

SELECT 
    *, 
    IF(x + y > z AND x + z > y AND y + z > x, 'Yes', 'No') AS triangle
FROM Triangle

Editorial Solution

SELECT 
    x,
    y,
    z,
    CASE
        WHEN x + y > z AND x + z > y AND y + z > x THEN 'Yes'
        ELSE 'No'
    END AS 'triangle'
FROM
    triangle
;