Using INNER JOIN and GROUP BY
\nSELECT s.product_id,p.product_name FROM Sales as s INNER JOIN Product as p ON s.product_id=p.product_id GROUP BY s.product_id HAVING MIN(sale_date)>=\'2019-01
```\nSELECT s.product_id,p.product_name FROM Sales as s INNER JOIN Product as p ON s.product_id=p.product_id GROUP BY s.product_id HAVING MIN(sale_date)>=\'2019-01-01\' AND MAX(sale_date)<=\'2019-03-31\';\n```
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