在SQL Server 2008 R2 Express中存儲XML文件

Question

我正在嘗試將XML數據存儲到SQL Server 2008 R2 Express數據庫中，每個xml文件都有不同的數據。 最簡單的方法是什么？

最佳選擇是什么，請舉例說明。

Answer 1

我相信最簡單的方法是創建一個存儲過程來為您處理存儲。 然后，您可以通過首選ORM檢索它，並讓C＃為您反序列化它。

CREATE TABLE [dbo].[MyXmlStorage] 
( 
    [Id] [int] IDENTITY(1,1) NOT NULL, 
    [FileName] [nvarchar](255) NOT NULL, 
    [Xml] [xml] NOT NULL, 

    CONSTRAINT [PK_MyXmlStorage] 
    PRIMARY KEY CLUSTERED  ([Id] ASC)
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] 

CREATE PROCEDURE [dbo].[InsertXml]
    (@filePathFull nvarchar(255)) 
AS 
   DECLARE @xmlAsString VARCHAR(MAX) 
   DECLARE @sql nvarchar(max) 
   DECLARE @xml XML 
   DECLARE @Rms_FileId nvarchar(50) 
   DECLARE @Rms_Id nvarchar(50) 
   DECLARE @Rms_Type nvarchar(50) 
   DECLARE @Rms_Timestamp nvarchar(50) 

BEGIN 
    SET @sql = 'SELECT @xmlAsString = x.y FROM OPENROWSET( BULK ''' + RTRIM(@filePathFull) + ''', SINGLE_CLOB) x(y)' 
    exec sp_executesql @sql,N'@xmlAsString VARCHAR(MAX) OUTPUT',@xmlAsString OUTPUT 

    set @xml = CONVERT(XML,@xmlAsString)  

    INSERT INTO MyXmlStorage([FileName],[Xml]) 
    VALUES (@filePathFull, @xml) 
END 

然后像這樣運行它：

exec InsertXml N'C:\files\xmlfile.xml'

Answer 2

好的，這是一個將xml值存儲到表中的示例。 我沒有嘗試過此代碼，但它應該可以工作，但至少它應該闡明如何按預期進行。

   /* Imagine your xml looks something like this

    <Content>
        <Title>Text</Title>
        <Value>15</Value>
    </Content>
    */

    CREATE TABLE [dbo].[MyXmlStorage] 
    ( 
        [Id] [int] IDENTITY(1,1) NOT NULL, 
        [Title] [nvarchar](100) NOT NULL, 
        [Value] int NOT NULL,

        CONSTRAINT [PK_MyXmlStorage] 
        PRIMARY KEY CLUSTERED  ([Id] ASC)
    ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] 

    CREATE PROCEDURE [dbo].[InsertXml]
        (@filePathFull nvarchar(255)) 
    AS 
       DECLARE @xmlAsString VARCHAR(MAX) 
       DECLARE @sql nvarchar(max) 
       DECLARE @xml XML 
       DECLARE @Rms_FileId nvarchar(50) 
       DECLARE @Rms_Id nvarchar(50) 
       DECLARE @Rms_Type nvarchar(50) 
       DECLARE @Rms_Timestamp nvarchar(50) 

    BEGIN 
        SET @sql = 'SELECT @xmlAsString = x.y FROM OPENROWSET( BULK ''' + RTRIM(@filePathFull) + ''', SINGLE_CLOB) x(y)' 
        exec sp_executesql @sql,N'@xmlAsString VARCHAR(MAX) OUTPUT',@xmlAsString OUTPUT 

        set @xml = CONVERT(XML,@xmlAsString)  

        /* Use xpath to query nodes for values inside the Content tag*/
        INSERT INTO MyXmlStorage([Title],[Value]) 
        SELECT 
            x.y.value('title[1]/text()[1]', 'nvarchar(100)') AS title,
            x.y.value('value[1]/text()[1]', 'int') AS value
        FROM @xml.nodes('//Content') AS x(y)
    END 
)