Write optimized PostgreSQL

Job ID: 31387756

Budget: $10 – $30 USD

Hi, I need optimized PostgreSQL queries, two. I have a .csv file with columns user_id and order_date. And I need to calculate % as below:

1. Find the percentage of users who placed more than 1 order in the FIRST 28 days (with output)
2. Find the percentage of users who has average days between orders over 28days (with output)
Related categories: PostgreSQL