SQL Quest › SQL Interview Questions › Conditional Logic
Tool Wear Stress Tier
Categorize each product by wear_tier: 'Worn-Out' if tool_wear_min >= 200, 'Aging' if >= 150, 'Used' if >= 50, 'Fresh' if < 50. Show product_id, type, tool_wear_min, wear_tier. Order by tool_wear_min descending. Top 30.
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Schema
products
| udi | product_id | type | tool_wear_min |
|---|---|---|---|
| 5640 | L52819 | L | 180 |
| 2171 | M17030 | M | 10 |
| 228 | L47407 | L | 168 |
Expected output: Each product labeled by wear tier
Hint
Concepts
SELECT CASE ORDER BY
Practise the topic: SQL practice questions · CASE WHEN practice
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