如何在不使用连接的情况下在多个表之间移动

Question

我需要"Display all the columns of Employee for those employees who invoiced a vehicle that was owned by a dealership that is different than the dealership that the employee works for."

我不允许使用联接来回答这个问题，所以我对如何从这些 table 中获取所有信息感到有点困惑。我需要查看员工是否为车辆开具发票，然后确定该车辆在哪个经销商处出售，然后确定该经销商 ID 代码是否与员工 ID 代码相同。

使用 join 有哪些可能的替代方法。

发票、员工、经销权和车辆都是各自的 table。

Answer 1

嵌套语句是一种可能的选择。

select * from Employees e
where employeeID is in
    (select ieid from Invoice
    where ivin is in
        (select vehicleID from Vehicle
        where vdcode <> e.edcode))

如何在不使用连接的情况下在多个表之间移动

How to move between several tables without using joins

expression

join

ms-access-2013