## Description

https://leetcode.com/problems/triangle-judgement/

A pupil Tim gets homework to identify whether three line segments could possibly form a triangle.However, this assignment is very heavy because there are hundreds of records to calculate.Could you help Tim by writing a query to judge whether these three sides can form a triangle, assuming table `triangle`

holds the length of the three sides x, y and z.

| x | y | z | |----|----|----| | 13 | 15 | 30 | | 10 | 20 | 15 |

For the sample data above, your query should return the follow result:

| x | y | z | triangle | |----|----|----|----------| | 13 | 15 | 30 | No | | 10 | 20 | 15 | Yes |

## Explanation

select IF(true, ‘Yes’, ‘No’).

## SQL Solution

```
# Write your MySQL query statement below
select *, IF((x + y > z and x + z > y and y + z > x ), 'Yes', 'No') as triangle from triangle
```