SELECT productCode, productName, buyPrice FROM products WHERE buyPrice BETWEEN 90 AND 100;
SELECT productCode, productName, buyPrice FROM products WHERE buyPrice >= 90 AND buyPrice <= 100;
SELECT productCode, productName, buyPrice FROM products WHERE buyPrice NOT BETWEEN 20 AND 100;
SELECT productCode, productName, buyPrice FROM products WHERE buyPrice < 20 OR buyPrice > 100;
SELECT orderNumber, requiredDate, status FROM orders WHERE requireddate BETWEEN CAST('2003-01-01' AS DATE) AND CAST('2003-01-31' AS DATE);