需要根據日期訂購輸出 - 子查詢

Question

我有一個簡單的子查詢，我有兩個表。第一個表格包含客戶ID，名字和姓氏。第二張表具有客戶ID和訂單日期。我想生成一個顯示名字，姓氏和訂單日期的查詢。

我曾嘗試下面的代碼，我不知道怎樣的順序輸出基於日期

Select 
    Customerid, 
    FirstName, 
    LastName 
From 
    Customer 
Where 
    CustomerID IN (select 
        CustomerID 
        from 
        orders 
        where 
        orderdate is not null); 

我顯示輸出僅僅是客戶ID，姓氏和名字。如何在訂單中包含訂單日期。

Answer 1

什麼呢U選擇=會顯示什麼你，包括你的SELECT語句

Select A.Customerid, A.firstname, A.lastname, B.orderdate 
From tableA A 
Inner join Tableb B on A.customerid = B.customerid 

日期修改過的問題（S），試試下面

Select A.firstname, A.lastname, B.orderdate 
From tableA A 
Inner join Tableb B on A.customerid = B.customerid 
Order By B.orederdate 

Answer 2

;with CustomerProductOrderOrdinal(OrderId, Ordinal) 
as 
(
    select 
     o.OrderId 
     , row_number() over (partition by o.CustomerId, o.ProductId order by o.OrderDate) Ordinal 
    from 
     Orders o 
    where 
     o.OrderDate is not null 
     -- filter for product here if so desired 
     -- and o.ProductId = <whatever> 
) 
,FirstCustomerProductOrder(OrderId) 
as 
(
    select 
     OrderId 
    from 
     CustomerProductOrderOrdinal 
    where 
     Ordinal = 1 
) 

select 
    c.CustomerId 
    , c.FirstName 
    , c.LastName 
    --, p.ProductId 
    , o.OrderDate 
From 
    Customer c 
    inner join Orders o 
    on c.CustomerId = o.CustomerId 
    inner join FirstCustomerProductOrder fcpo 
    on o.OrderId = fcpo.OrderId 
    -- join with product if you want product info 
    --inner join Product p 
    -- on o.ProductId = p.ProductId