2020年11月5日
SQL子查询
摘要： select cust_name,cust_contact from customers where cust_id in (select cust_id from orders where order_num in (select order_num from orderitems where p 阅读全文
posted @ 2020-11-05 15:40 猫七的blog 阅读(99) 评论(0) 推荐(0) 编辑