sql 查询三条边是否能构成三角形
2017-04-07 22:55 backyyan 阅读(586) 评论(0) 编辑 收藏 举报列表：A B C 代表三角形三条边
输出：
Isosceles
Equilateral
Scalene
Not A Triangle
代码如下：
select CASE
when (A + B) <= C then 'Not A Triangle'
when A = B and B = C then 'Equilateral'
when (A = B) or (B = C) or (A = C) then 'Isosceles'
when A != B and B != C and A != C then 'Scalene'
end from TRIANGLES
