對於SQL Server中的XML自定義屬性和元素

Question

我需要使用帶有屬性的自定義元素使用硬編碼數據創建以下XML。

表模式： StudentMark ：

CREATE TABLE [dbo].[StudentMark]
(
    [StudentMarkId] [int] IDENTITY(1,1) NOT NULL,
    [StudentId] [uniqueidentifier] NOT NULL,
    [SubjectId] [uniqueidentifier] NOT NULL,
    [Score] [int] NOT NULL,
    [ScoreInfo] [xml] NOT NULL,
    [GeneratedOn] [datetime2](2) NOT NULL,
    [IsPass] [bit] NOT NULL,
    CONSTRAINT [PK_StudentMark] 
       PRIMARY KEY CLUSTERED ([StudentMarkId] ASC)
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

樣本種子數據

INSERT INTO [dbo].[StudentMark] ([StudentId], [SubjectId], [ScoreInfo], [GeneratedOn], [Score], [IsPass])
VALUES ('FC3CB475-B480-4129-9190-6DE880E2D581', '0D72F79E-FB48-4D3E-9906-B78A9D105081', '<StudentMarkAttribute xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></StudentMarkAttribute>', '2017-08-10 10:10:15', 95, 1),
       ('0F4EF48C-93E3-41AA-8295-F6B0E8D8C3A2', '0D72F79E-FB48-4D3E-9906-B78A9D105081', '<StudentMarkAttribute xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></StudentMarkAttribute>', '2017-08-10 10:10:15', 100, 1),
       ('0F4EF48C-93E3-41AA-8295-F6B0E8D8C3A2', 'AB172272-D2E9-49E1-8040-6117BB6743DB', '<StudentMarkAttribute xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></StudentMarkAttribute>', '2017-08-16 09:06:20', 25, 0),
       ('FC3CB475-B480-4129-9190-6DE880E2D581', 'AB172272-D2E9-49E1-8040-6117BB6743DB', '<StudentMarkAttribute xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></StudentMarkAttribute>', '2017-08-16 09:06:20', 82, 1);

要求 ：我需要在XML中添加Element <DigitallySigned> ，XML用於一個記錄，使用where子句WHERE [StudentMarkId] = 1 。 請注意以下Template， DateSigned屬性與元素GeneratedOn dateTime完全相同，Element Admin的值是硬編碼值。

XML模板 ：

<ScoreInfo>
    <DigitallySigned DateSigned="2017-08-10 10:10:15">Admin</DigitallySigned>
    <StudentMarkId>1</StudentMarkId>
    <StudentId>FC3CB475-B480-4129-9190-6DE880E2D581</StudentId>
    <SubjectId>0D72F79E-FB48-4D3E-9906-B78A9D105081</SubjectId>
    <Score>95</Score>
    <GeneratedOn>2017-08-10 10:10:15</GeneratedOn>
    <IsPass>1</IsPass>
</ScoreInfo>

我嘗試了以下代碼

SELECT TOP (1) 
    (SELECT SM.[GeneratedOn] AS [DateSigned] FOR XML RAW)
      ,SM.[StudentMarkId]
      ,SM.[StudentId]
      ,SM.[SubjectId]
      ,SM.[Score]
      ,SM.[GeneratedOn]
      ,SM.[IsPass]
  FROM [DevDB].[dbo].[StudentMark] SM
  WHERE SM.[StudentMarkId] = 1
  FOR XML RAW ('ScoreInfo'), ELEMENTS

我得到了以下XML輸出

<ScoreInfo>&lt;row DateSigned="2017-08-10T10:10:15"/&gt;<StudentMarkId>1</StudentMarkId><StudentId>FC3CB475-B480-4129-9190-6DE880E2D581</StudentId><SubjectId>0D72F79E-FB48-4D3E-9906-B78A9D105081</SubjectId><Score>95</Score><GeneratedOn>2017-08-10T10:10:15</GeneratedOn><IsPass>1</IsPass></ScoreInfo>

請幫助我如何獲得所需的XML 。

Answer 1

開始。

SELECT TOP (1) 
    [GeneratedOn] AS "DigitallySigned/@DateSigned",
    'Admin' AS "DigitallySigned"
      ,SM.[StudentMarkId]
      ,SM.[StudentId]
      ,SM.[SubjectId]
      ,SM.[Score]
      ,SM.[GeneratedOn]
      ,SM.[IsPass]
  FROM [DevDB].[dbo].[StudentMark] SM
  WHERE SM.[StudentMarkId] = 1
  FOR XML PATH ('ScoreInfo');