Classifying Bracing Frames

Problem

A workshop builds triangular bracing frames from three steel struts. Table `Braces` stores one frame per row with the three strut lengths `side_x`, `side_y`, and `side_z` (centimeters). Three lengths only form a real triangle when every side is shorter than the sum of the other two; if any side is greater than or equal to that sum, the struts cannot close into a triangle. For each frame report a single column `frame_kind`:

- `Open Frame` if the three struts cannot form a triangle.
- `Regular` if all three struts are equal.
- `Balanced` if exactly two struts are equal.
- `Irregular` if all three struts differ.

Return one row per frame in any order.

Tables

Example rows — the live problem includes the full dataset.

Expected output

Your answer should return 4 rows with the columns frame_kind.

Starter code (SQL)

SELECT *
FROM Braces;

Related SQL questions

• Above-Average CampusesEasy
• Adjacent Open Parking SpotsEasy
• App Ad Click-Through RateEasy
• Asset Labels With a Three-Digit CodeEasy
• Average Listening Sessions per ListenerEasy
• Average Nightly Rate Earned per RoomEasy