SQL Quest › SQL Interview Questions › Aggregation & Grouping
Quality Grades With 100+ Products
Show only the quality grades with 100 or more products in our sample. Show type, product_count, avg_tool_wear (rounded to 1 decimal). Order by product_count descending.
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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: Common quality types only
Hint
Concepts
SELECT GROUP BY HAVING Aggregation
Practise the topic: SQL practice questions · GROUP BY exercises
Read the concept: WHERE vs HAVING
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