Delivered Orders

In the "Kotomarket" marketplace all orders are stored in a flat table orders. Each order has a number, the customer's name, a city, a status, and an amount. The status column takes the values: 'обработка' (processing), 'в пути' (in transit), 'доставлен' (delivered), 'отменён' (cancelled). The support team wants to see only delivered orders, to collect feedback from happy customers. Write a query that returns three columns — order_id, customer, amount — only for orders whose status equals 'доставлен'. Use only SELECT and WHERE with an equality check. No sorting is required and row order does not matter.