Consider the following schema for a fictional Ecommerce database:

$-$customers: customer$\_$id$,$ first$\_$name, last$\_$name, email, age

$-$ orders: order$\_$id$,$ customer$\_$id$,$ order$\_$date, total$\_$amount $-$ order$\_$items: order$\_$item$\_$id$,$ order$\_$id$,$ product$\_$id$,$ quantity

$-$ products: product$\_$id$,$ product$\_$name, unit$\_$price

Write an SQL query to find the total revenue generated from each customer, along with their full names $("$first$\_$name last$\_$name"$),$ ordered by total revenue in descending order.Only include customers who have made at least $2$ orders.

Output: customer$\_$name, total$\_$revenue Note: Use SELECT $*$ FROM TABLE$\_$NAME to explore the data if required.