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Rolling Tool Wear Trend
Compute a 5-unit rolling average tool wear as we walk through products by udi. Use a window with ROWS BETWEEN. Show udi, product_id, tool_wear_min, rolling_5_avg (rounded to 1 decimal). Top 30 by udi.
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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: Smoothed tool wear trend
Hint
Concepts
SELECT Window Functions AVG
Practise the topic: SQL practice questions · Window function practice · GROUP BY exercises · Advanced SQL interview questions
Read the concept: SQL running total
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