Заявление о дел SQL
SELECT order_id, customer_id,
CASE
WHEN amount >= 400 THEN (amount - amount * 10/100)
END AS offer_price
FROM Orders;
SAMER SAEID
SELECT order_id, customer_id,
CASE
WHEN amount >= 400 THEN (amount - amount * 10/100)
END AS offer_price
FROM Orders;SELECT customer_id, first_name,
CASE
WHEN age >= 18 THEN 'Allowed'
END AS can_vote
FROM Customers;