You are given a reviews table containing reviews of various products.
Write a query to find the average stars for each product every month.
Additional requests:
- The month should be in numerical value.
- The star rating should be rounded to two decimal places.
- The output should be sorted by month followed by the product id.
reviews table:
| Column Name | Description |
|---|
| review_id | Unique identifier for each review |
| user_id | ID of the user who submitted the review |
| submit_date | Date the review was submitted |
| product_id | ID of the product being reviewed |
| stars |
