找到已购买冰箱等零件的客户名称（part_description）

Question

请帮助解决这个问题。我尝试使用join.can在Microsoft Access 2010中解决此问题。我通过创建视图然后应用简单查询来解决此问题

这是表结构：

客户

custnum，custname，balance，repnum

订单

ordernum，partnum，numordered，quotedprice

订单

ordernum，orderdate，customernum

部分

partnum，description，onhand，class，warehouse，price

rep

repnum，佣金

Answer 1

SELECT DISTINCT c.custname
FROM ((orderline AS ol 
INNER JOIN [part] AS p ON ol.partnum  = p.partnum)
INNER JOIN [order] AS o ON ol.ordernum  = o.ordernum)
INNER JOIN customer AS c ON o.customernum = c.custnum
WHERE p.description = 'refrigerator'

Answer 2

SELECT custname FROM customer WHERE custnum=
ANY(SELECT custnum FROM [order] WHERE ordernum=
    ANY(SELECT ordernum FROM orderline WHERE partnum=
       ANY(SELECT partnum FROM [part] WHERE description ='refrigerator')
));