MySQL | Somple solution w/ DISTINCT
That\'s all:\n\nSELECT DISTINCT s.product_id, p.product_name\nFROM Product p\nLEFT JOIN Sales s ON p.product_id = s.product_id\nWHERE\n    sale_date BETWEEN \'2
That\'s all:\n```\nSELECT DISTINCT s.product_id, p.product_name\nFROM Product p\nLEFT JOIN Sales s ON p.product_id = s.product_id\nWHERE\n    sale_date BETWEEN \'2019-01-01\' AND \'2019-03-31\'\n    AND s.product_id NOT IN (\n        SELECT product_id\n        FROM sales\n        WHERE sale_date NOT BETWEEN \'2019-01-01\' AND \'2019-03-31\'\n    );\n```
['MySQL']