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monzchan
suggested changes
Aug 19, 2025
| How many customers are there (y). | ||
| Before your final group by you should have the product of those two queries (x*y). */ | ||
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| SELECT |
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You may consider using DISTINCT query to avoid duplicate rows if customer_id has multiple purchases on the same day
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| INSERT INTO product_units | ||
| (product_id, product_name, product_size, product_category_id, product_qty_type, snapshot_timestamp) | ||
| VALUES (999, 'Apple Pie', '500g', 5, 'unit', CURRENT_TIMESTAMP); |
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here inserts product_id = 999 manually. Could consider auto-increment / calculating MAX(product_id)+1 to avoid conflicts
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