SQL Taskbook Level 2.7
Given a table:
| id | name | total | date |
| 1 | Aaron | 999 | 2023-08-31 |
| 2 | Max | 140 | 2023-09-28 |
| 3 | Catherine | 560 | 2023-05-31 |
| 4 | Catherine | 240 | 2023-03-22 |
| 5 | Aaron | 500 | 2023-01-24 |
Solve the following tasks for it:
Display a list of unique customers who have placed orders.
Find the total number of orders made by each customer.
Display a list of orders made in the current year.
Find the average order size (amount) for the last 3 months.
Display orders where the amount is greater than 1000 dollars.
