SELECT prod_name FROM products;

SELECT prod_id, prod_name, prod_price FROM products;

SELECT * FROM products;

SELECT DISTINCT vend_id FROM products;

SELECT prod_name FROM products LIMIT 5;

SELECT prod_name FROM products LIMIT 5, 5; #开始行，行数

SELECT products.prod_name FROM products; #使用完全限定的列名

SELECT prod_name FROM mysql_crash_course_db.products; #使用完全限定的表名