Simple MySQL Solution
\nSELECT\n    product_name,\n    SUM(unit) AS unit\nFROM products\nINNER JOIN orders USING(product_id)\nWHERE order_date LIKE "2020-02%"\nGROUP BY product_name\
```\nSELECT\n    product_name,\n    SUM(unit) AS unit\nFROM products\nINNER JOIN orders USING(product_id)\nWHERE order_date LIKE "2020-02%"\nGROUP BY product_name\nHAVING unit >= 100\n```
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