数据库sql语法，这个sql代码有什么问题

Question

SELECT customer.first_name,
       customer.last_name,
       orders.order_number
FROM customer
     FULL OUTER JOIN orders ON customer.id = orders.customerid
ORDER BY customer.last_name;

Answer 1

从客户处选择customer.first_name，customer.last_name，orders.order_number customer.id = orders.customerid ORDER by customer.last_name;

的完整外连接订单

此查询没有错，只需检查您的列名称