在 FOR XML PATH 中包含 Column_Id 作为属性

Question

让我们看看这个 sql 查询

SELECT * 
FROM Customer 
WHERE Id = 60 
FOR XML PATH ('Customer'), ELEMENTS XSINIL, TYPE

它returnsXML像这样

<Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <Id>60</Id>
      <BranchId>5</BranchId>
      <DocKind>3</DocKind>
      <Document>SomeDoc</Document>
....

如何将 Column_id 作为 Xml 属性添加到每个节点？

这是返回 table 的 Column_Id 的查询 Customer:

SELECT COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
    COLUMN_NAME, 'ColumnID') AS COLUMN_ID, COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Customer'

我想要这样的结果：

<Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Id ColumnId=1>60</Id>
  <BranchId ColumnId=2>5</BranchId>
  <DocKind ColumnId=3>3</DocKind>
  <Document ColumnId=4>SomeDoc</Document>

Answer 1

如果你在 SQL 服务器中，我想你可以为每个字段创建一个相关的子查询，例如：

(select top(1) COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
COLUMN_NAME, 'ColumnID') AS COLUMN_ID
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Customer' AND COLUMN_NAME = 'BranchId') as 'BranchID/@Column_ID'

这是对 TSQL FOR XML PATH Attribute On , Type 中给出的信息的快速应用。

有了一些样本数据，就可以更容易地看出它是否有效...

CREATE TABLE Customer (ID INT IDENTITY(1,1), BranchID INT) 
GO
INSERT INTO Customer SELECT ID FROM (VALUES (1),(2)) x(id)
GO

SELECT (SELECT TOP(1) COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),COLUMN_NAME, 'ColumnID') 
          FROM INFORMATION_SCHEMA.COLUMNS
         WHERE TABLE_NAME = 'Customer' 
           AND COLUMN_NAME = 'ID') AS 'ID/@Column_ID'
     ,ID
     ,(SELECT TOP(1) COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME), COLUMN_NAME, 'ColumnID') 
         FROM INFORMATION_SCHEMA.COLUMNS
        WHERE TABLE_NAME = 'Customer' AND COLUMN_NAME = 'BranchId') AS 'BranchID/@Column_ID'
     ,BranchID
 FROM Customer 
WHERE Id = 1 FOR XML PATH ('Customer'), ELEMENTS XSINIL, TYPE

这让我感动：

<Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ID Column_ID="1">1</ID>
  <BranchID Column_ID="2">1</BranchID>
</Customer>

Answer 2

解决方法如下：

DECLARE @s VARCHAR(MAX) = 
'select ' + STUFF(( SELECT  ',' + CAST(COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + 
                            '.' + TABLE_NAME), COLUMN_NAME, 'ColumnID') AS VARCHAR(10)) + 
                            ' as ''' + COLUMN_NAME + '/@ColumnID'', [' + COLUMN_NAME + ']'
                    FROM    INFORMATION_SCHEMA.COLUMNS
                    WHERE   TABLE_NAME = 'Customer'
                    FOR XML PATH('')), 1, 1, '') + 
' from Customer FOR XML PATH(''Customer''),ELEMENTS XSINIL, TYPE'   
EXEC (@s)

在 FOR XML PATH 中包含 Column_Id 作为属性

Include Column_Id as atttribute in FOR XML PATH

sql-server

xml

identity-column