Faster than 93.61% | MySQL Easy Solution
```\nSELECT product_id, product_name\nFROM Product\nWHERE product_id IN (\n    SELECT product_id FROM Sales\n    GROUP BY product_id\n    HAVING MIN(sale_date) 
```\nSELECT product_id, product_name\nFROM Product\nWHERE product_id IN (\n    SELECT product_id FROM Sales\n    GROUP BY product_id\n    HAVING MIN(sale_date) >= \'2019-01-01\' AND MAX(sale_date) <= \'2019-03-31\');
['MySQL']