Easy Solution I guess 🔥
IntuitionApproachComplexity
Time complexity:

Space complexity:
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```postgresql []
select product_id , year as first_year , quantity , price from (
    select * ,
    rank() over (partition by product_id order by year) as rank
    from sales
) as x where x.rank = 1;
```
['PostgreSQL']