using SQL

Use Customer/order schema you downloaded to answer the following: 1. Show number of customers 2. Show number of customers with letter ' x ' in their names 3. Show number of customers with refunded orders 4. Show number of orders in order table 5. Show number of orders for cust id 117 6. Show number of completed orders 7. Show number of orders for each status 8. Show number of orders per line_item_id