Select all customers where the country field
is one of the the values in the following list:
('Norway', 'Sweden', 'Denmark')
SELECT * FROM customers
WHERE country @(34);
SELECT * FROM customers
WHERE country IN ('Norway', 'Sweden', 'Denmark');
SELECT * FROM customers
WHERE country IN ('Norway','Sweden','Denmark');
SELECT * FROM customers
WHERE country IN ('Norway', 'Sweden','Denmark');
SELECT * FROM customers
WHERE country IN ('Norway','Sweden', 'Denmark');