Question

现在我正在尝试将两个不同表中的信息连接到一个新表中。

这就是我现在所拥有的。

insert into invoices_paid(InvoiceNumber,InvoiceDate,InvoiceTotal) 
select InvoiceNumber,InvoiceDate,InvoiceTotal
from Invoices
insert into invoices_paid(AccountNo, InvoiceLineItemAmount, InvoiceLineItemDescription) 
select AccountNo, InvoiceLineItemAmount, InvoiceLineItemDescription 
From InvoiceLineItems

要提供帮助的图片。Query

我需要红色框中的信息与左侧列中的相应信息相匹配。我很喜欢加入，但我认为我很接近。有人可以帮忙吗？

Answer 1

在InvoiceNumber上加入Invoices和InvoiceLineItems表，并将其用作INSERT语句的SELECT子句的数据源。如：

insert into invoices_paid (InvoiceNumber,InvoiceDate,InvoiceTotal,
    AccountNo, InvoiceLineItemAmount, InvoiceLineItemDescription)
select
    inv.InvoiceNumber,InvoiceDate,InvoiceTotal,
    AccountNo, InvoiceLineItemAmount, InvoiceLineItemDescription
from 
    Invoices as inv
    inner join InvoiceLineItems as li on li.InvoiceNumber = inv.InvoiceNumber;

Answer 2

你可以使用select在新表中插入值来查找你要考虑的其他表中的值，你也必须考虑条件，并考虑根据你必须创建行的条件连接两个表：

insert into invoices_paid(InvoiceNumber,InvoiceDate
 ,InvoiceTotal,AccountNo, InvoiceLineItemAmount, InvoiceLineItemDescription)
 values (select i.InvoiceNumber,i.InvoiceDate,i.InvoiceTotal
 , b.AccountNo, b.InvoiceLineItemAmount, b.InvoiceLineItemDescription
 from Invoices as i join InvoiceLineItems
 as b where i.InvoiceNumber = b.AccountNo )

将表插入新表时无法连接表。

2 个答案: