Question

我是SQL的新手，但基本上我正在尝试获取客户数据，一切正常，除非我想在每次导致问题时为最终结果添加电子邮件地址。

这适用于基于体积的网站。

我不确定我的错误是我的代码

SELECT 
    Orders.OrderID,
    Orders.OrderDate,
    Orders.ShipFirstName, 
    Customers.EmailAddress
FROM 
    Orders
JOIN 
    Customers ON customers.customerid = orders.customerid
WHERE
    Orders.OrderStatus = 'Shipped'
    AND Orders.ShipDate >= DATEADD(DAY, 20, GETDATE())
    AND Orders.ShipDate <= DATEADD(DAY, -5, GETDATE())

UNION ALL

INSERT INTO Customers (EmailAddress)
VALUES ('Testemail@gmail.com');
ORDER BY Orders.OrderID desc

我想要做的就是这样，每次我运行这个，最后添加我的电子邮件地址，因为我们向所有导出信息的人发送订单更新，我想确保我得到一个该电子邮件的副本，无需在每封电子邮件中自我控制。

我实际上并不想在真实表格中添加任何内容，只是为了我的结果

例如，现在当我运行这个时，我得到了这个结果

3104    10/9/2014 12:54:00 PM   Jeanine jrgtnce@yahoo.com
3065    10/6/2014 1:01:00 PM    Annamarie   the.annamarie@gmail.com

But I want this

3104    10/9/2014 12:54:00 PM   Jeanine jrgtnce@yahoo.com
3065    10/6/2014 1:01:00 PM    Annamarie   te.annrie@gmail.com
null        nulll               null           testemail@gmail.com

testemail@gmail.com将更改为我的个人电子邮件

Answer 1

我假设您不是每次运行查询时都不想将相同的数据添加到Customers，而只是将合成记录添加到结果中：

SELECT 
    Orders.OrderID,
    Orders.OrderDate,
    Orders.ShipFirstName, 
    Customers.EmailAddress
FROM 
    Orders
JOIN 
    Customers ON customers.customerid = orders.customerid
WHERE
    Orders.OrderStatus = 'Shipped'
    AND Orders.ShipDate >= DATEADD(DAY, 20, GETDATE())
    AND Orders.ShipDate <= DATEADD(DAY, -5, GETDATE())

UNION ALL

SELECT NULL, NULL, NULL, 'Testemail@gmail.com'

Answer 2

INSERT INTO #TempCustomerTable
SELECT 
    Orders.OrderID,
    Orders.OrderDate,
    Orders.ShipFirstName, 
    Customers.EmailAddress
FROM 
    Orders
JOIN 
    Customers ON customers.customerid = orders.customerid
WHERE
    Orders.OrderStatus = 'Shipped'
    AND Orders.ShipDate >= DATEADD(DAY, 20, GETDATE())
    AND Orders.ShipDate <= DATEADD(DAY, -5, GETDATE())
ORDER BY Orders.OrderID desc


-- If you are trying to update all users  email address

UPDATE #TempCustomerTable
SET EmailAddress = 'Testemail@gmail.com'

-- If you are trying to insert new record with just email assuming no null constraints
INSERT INTO #TempCustomerTable
VALUES(NULL, NULL,NULL, 'Testemail@gmail.com')

or 


-- If you are trying to update all users  email address
SELECT 
    Orders.OrderID,
    Orders.OrderDate,
    Orders.ShipFirstName, 
    'Testemail@gmail.com' AS EmailAddress
FROM 
    Orders
JOIN 
    Customers ON customers.customerid = orders.customerid
WHERE
    Orders.OrderStatus = 'Shipped'
    AND Orders.ShipDate >= DATEADD(DAY, 20, GETDATE())
    AND Orders.ShipDate <= DATEADD(DAY, -5, GETDATE())
ORDER BY Orders.OrderID desc

如何向SQL结果集添加常量行？

2 个答案: