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题解 | #从表中检索产品名称及对应销售总数#

SELECT prod_name, (SELECT SUM(quantity) FROM OrderItems i ...

Mysql

2022-08-16

0 0

题解 | #返回每个顾客不同订单的总金额#

SELECT cust_id, total_ordered FROM (SELECT order_num, SUM(item_price * quantity) tota...

Mysql

2022-08-16

0 0