sql 用于XML示例的MS SQL

Posted 2021-05-13

SELECT Top 2 Cust.CustomerID,
       OrderHeader.SalesOrderID,
       OrderHeader.Status
FROM Sales.Customer Cust 
INNER JOIN Sales.SalesOrderHeader OrderHeader
ON Cust.CustomerID = OrderHeader.CustomerID
FOR XML Auto | Raw | Path | ;

-- ******** AUTO ********
-- <Cust CustomerID="29825">
--   <OrderHeader SalesOrderID="43659" Status="5" />
-- </Cust>
-- <Cust CustomerID="29672">
--   <OrderHeader SalesOrderID="43660" Status="5" />
-- </Cust>


-- ******** RAW ********
-- <row CustomerID="29825" SalesOrderID="43659" Status="5" />
-- <row CustomerID="29672" SalesOrderID="43660" Status="5" />


-- ******** PATH ********
-- <row>
--   <CustomerID>29912</CustomerID>
--   <SalesOrderID>43684</SalesOrderID>
--   <Status>5</Status>
-- </row>
-- <row>
--   <CustomerID>29849</CustomerID>
--   <SalesOrderID>43696</SalesOrderID>
--   <Status>5</Status>
-- </row>

-- ******** EXPLICIT ********
SELECT TOP 2 1  AS Tag,  
       NULL AS Parent,  
	   Cust.CustomerID AS [Cust!1!ID],
       OrderHeader.SalesOrderID AS [Cust!1!SOrdID],
       OrderHeader.Status AS [Cust!1!Status]
FROM Sales.Customer Cust 
INNER JOIN Sales.SalesOrderHeader OrderHeader
ON Cust.CustomerID = OrderHeader.CustomerID
FOR XML EXPLICIT;  

-- <Cust ID="29825" SOrdID="43659" Status="5" />
-- <Cust ID="29672" SOrdID="43660" Status="5" />


-- Other Styles
-- Style 1
-- https://stackoverflow.com/a/5658758
SELECT CAST(
    (SELECT TOP 2 C.CustomerID, C.AccountNumber
        FROM Sales.Customer C
        FOR XML PATH('')
    )
        AS VARCHAR(MAX)
) AS XMLDATA ;
-- <CustomerID>1</CustomerID>
-- <AccountNumber>AW00000001</AccountNumber>
-- <CustomerID>2</CustomerID>
-- <AccountNumber>AW00000002</AccountNumber>

-- Style 2
SELECT TOP 2 C.CustomerID, C.AccountNumber
        FROM Sales.Customer C
		FOR XML AUTO, 
		    TYPE, 
			XMLSCHEMA, 
			ELEMENTS XSINIL;