Solution without JOIN using NOT IN and NOT BETWEEN
\nSELECT Product.product_id, Product.product_name\nFROM Product\nWHERE product_id NOT IN (SELECT product_id FROM Sales WHERE sale_date NOT BETWEEN \'2019-01-01\
```\nSELECT Product.product_id, Product.product_name\nFROM Product\nWHERE product_id NOT IN (SELECT product_id FROM Sales WHERE sale_date NOT BETWEEN \'2019-01-01\' AND \'2019-03-31\');\n```
[]