INSERT INTO - 訪問SQL與SQL Server

Question

我有一個隨機問題，當我試圖爲INSERT INTO語句獲取Access SQL代碼並轉換爲更有組織的SQL Server版本時，出現了這個問題。下面是Access的SQL，我可以告訴除了第一個SELECT - 「SELECT」Shipment「AS Type ...之外的所有東西都指向了什麼？我沒有看到它從中提取數據的任何源，並且它被稱爲表達式訪問的設計圖，我真的只是在SQL Server的工作，所以我希望有人能幫助我破譯意圖是在這裏。謝謝。

'INSERT INTO [Fcst/Order/Ship Data] (Type, [Acct#], BU, Gender, Material, Description, [Size], [Year], Mth, Qty, BS) 
SELECT "Shipment" AS Type, [Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)].[BILL TO] AS [Acct#], dbo_vw_kd_BUSINESS_UNIT.BUSINESS_UNIT_DESC AS BU, dbo_vw_kd_GENDER.GENDER_DESC AS Gender, dbo_VW_INVOICES_SIZE.MATERIAL AS Material, dbo_vw_MM_MATERIAL.DESCRIPTION AS Description, dbo_VW_INVOICES_SIZE.SIZE_LITERAL, Year([requested_delivery_date]) AS [Year], Month([requested_delivery_date]) AS Mth, Sum(dbo_VW_INVOICES_SIZE.INVOICED_QUANTITY) AS Qty, dbo_vw_kd_BUSINESS_SEGMENT.BUSINESS_SEGMENT_DESC 
FROM ([Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)] INNER JOIN (dbo_VW_INVOICES_SIZE INNER JOIN ((dbo_vw_MM_MATERIAL INNER JOIN dbo_vw_kd_BUSINESS_UNIT ON dbo_vw_MM_MATERIAL.BUSINESS_UNIT_CODE = dbo_vw_kd_BUSINESS_UNIT.BUSINESS_UNIT_CODE) INNER JOIN dbo_vw_kd_GENDER ON dbo_vw_MM_MATERIAL.GENDER_CODE = dbo_vw_kd_GENDER.GENDER_CODE) ON dbo_VW_INVOICES_SIZE.MATERIAL = dbo_vw_MM_MATERIAL.MATERIAL) ON ([Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)].SIZE_INDEX = dbo_VW_INVOICES_SIZE.SIZE_LITERAL) AND ([Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)].BILLING_DOCUMENT_NUMBER = dbo_VW_INVOICES_SIZE.BILLING_DOCUMENT_NUMBER) AND ([Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)].BILLING_ITEM_NUMBER = dbo_VW_INVOICES_SIZE.BILLING_ITEM_NUMBER)) INNER JOIN dbo_vw_kd_BUSINESS_SEGMENT ON dbo_vw_MM_MATERIAL.BUSINESS_SEGMENT_CODE = dbo_vw_kd_BUSINESS_SEGMENT.BUSINESS_SEGMENT_CODE 
GROUP BY [Fcst v Order 03: Create Temp Invoice Tbl (Invoiced)].[BILL TO], dbo_vw_kd_BUSINESS_UNIT.BUSINESS_UNIT_DESC, dbo_vw_kd_GENDER.GENDER_DESC, dbo_VW_INVOICES_SIZE.MATERIAL, dbo_vw_MM_MATERIAL.DESCRIPTION, dbo_VW_INVOICES_SIZE.SIZE_LITERAL, Year([requested_delivery_date]), Month([requested_delivery_date]), dbo_vw_kd_BUSINESS_SEGMENT.BUSINESS_SEGMENT_DESC 
HAVING (((Year([requested_delivery_date]))=2017)); 

Answer 1

這只是一個常量字符串，進入[Fcst/Order/Ship Data].Type所有插入的記錄。

你會做同樣的SQL Server中，只需用單引號代替雙引號。

編輯：

在SQL Server中，你會做

INSERT INTO foo (type, bar) 
SELECT 'Hello World' AS type, bazbar 
FROM baz 

或者是使用[type]，因爲這是在Transact-SQL（CREATE TYPE）保留字。

AS type是不是真的需要，這將很好的工作：

INSERT INTO foo (type, bar) 
SELECT 'Hello World', bazbar 
FROM baz 

列別名是有用的

• 測試SELECT部分​​分別
• 自我記錄的SQL代碼（用於非平凡的陳述）

Answer 2

如果你在說話g，特別是關於SELECT "Shipment" as Type，而不是接下來的內容，那麼所做的只是將字符串文字「Shipment」放入其添加的每行的Type列中。

請參閱：https://docs.microsoft.com/en-us/sql/t-sql/queries/select-clause-transact-sql