✅EASY MYSQL 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![Up.png](https://assets.leetcode.com/users/images/adebf70c-deb4-402f-8f40-f64dbb482bcb_1723795232.5637417.png)\n\n```\n# Write your MySQL query statement below\nselect product_id,year as first_year, quantity, price\nfrom Sales\nwhere(product_id, year) in (select  product_id, min(year) from Sales group by product_id)\n```
['MySQL']