PostgreSQL unit-11

SELECT id, make, model, price, ROUND(price * .10) FROM car;

SELECT id, make, model, price, ROUND(price * .10, 2) FROM car;

SELECT id, make, model, price, ROUND(price * .10, 2), ROUND(price - ROUND(price * .10),2) FROM car;

SELECT id, make, model, price AS original_price, ROUND(price * .10, 2) AS chegirma, ROUND(price - ROUND(price * .10),2) AS aksiyadagi_narx FROM car;