MYSQL Easy Solution ✅✅
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\n# Write your MySQL query statement below\nselect s.product_id, p.product_name\nfrom sales s, product p\nwhere s.product_id = p.product_id\ngroup by s.product_id, p.product_name\nhaving min(s.sale_date) >= \'2019-01-01\' AND max(s.sale_date) <= \'2019-03-31\'\n```
['MySQL']