Sql server 将xml写入DB、T-SQL的存储过程

我试图编写一个存储过程，将xml写入DB，T-SQL

下面是我的示例xml（在prod环境中，它将有大量的

）：

我使用实体框架来调用存储过程。调用刚刚发生（没有错误），但数据库没有更新。我很确定我在

INSERT

语句中输入了错误的内容。我仿效了这个例子

有人能指出我如何使用xml中各个元素的数据填充数据库中的三列吗？这些列是

code

、

ShortName

、

Name

、

LegalAddress

和

Status

更新

答案公布后，我尝试了建议的解决方案。我得到一个错误：

Msg 102，15级，状态1，程序LegalContractorsDataSynchronize，第15行[批处理起始行0] “@pathToXml”附近的语法不正确

这是我的密码：

CREATE PROCEDURE [dbo].[LegalContractorsDataSynchronize] 
(
    @pathToXml varchar
)
AS
BEGIN

BEGIN TRANSACTION

DELETE FROM [dbo].[LegalContractors];

;WITH XmlFile (xmlData) AS
(
   SELECT TRY_CAST(BulkColumn AS XML) 
   FROM OPENROWSET(BULK @pathToXml, SINGLE_BLOB) AS x
)
INSERT INTO [dbo].[LegalContractors] ([Code], [ShortName], [Name], [LegalAddress], [Status])
SELECT c.value('(EDRPOU/text())[1]','NVARCHAR(100)') AS [Code]
   , c.value('(SHORT_NAME/text())[1]','NVARCHAR(512)') AS [ShortName]
    , c.value('(NAME/text())[1]','NVARCHAR(2048)') AS [Name]
   , c.value('(ADDRESS/text())[1]','NVARCHAR(2048)') AS [LegalAddress]
   , c.value('(STAN/text())[1]','NVARCHAR(100)') AS [Status]
FROM XmlFile CROSS APPLY xmlData.nodes('/DATA/RECORD') AS t(c);

COMMIT TRANSACTION

END

---

请尝试以下操作。据我所知，OPENROWSET（）不接受file name参数作为变量

SQL

---

我更新了我的问题。您能帮我解决我遇到的问题吗？正如我前面所说的“…OPENROWSET（）不接受文件名参数作为变量…”。我更新了答案。我相信你错了。

OPENROWSET

不支持文件名：

'data_file'是要将其数据复制到目标表中的数据文件的完整路径。

@hellouworld:它支持文本文件名，而不是变量。语法明确地这么说（

'data\u file'

，而不是

@string\u variable |'data\u file'

）。语句必须动态生成。Jeroen，请在LinkedIn上与我联系。

我正在使用实体框架调用存储过程。

那你为什么要使用这个存储过程呢？只需创建适当的DbContext和实体，并使用EF插入数据。现在，在服务器上尝试immitate EF时，只会给调用增加开销。如果您真的需要这个存储过程，一个简单的ADO.NET SqlCommand会更好。您还可以将数据作为XML类型的参数传递，声明不带长度的

VARCHAR

为。如果您打算在其中填充路径，则更是如此。@PanagiotisKanavos，xml大小大于1Gb。如果我们考虑到应用程序和数据库位于不同的服务器上，这是不可行的（以我手头的基础设施容量）。xml存储在db服务器端。

CREATE PROCEDURE [dbo].[LegalContractorsDataSynchronize] 
(
    @pathToXml varchar
)
AS
BEGIN

BEGIN TRANSACTION

DELETE FROM [dbo].[LegalContractors];

INSERT INTO [dbo].[LegalContractors]([Code], [ShortName], [Name], [LegalAddress], [Status])
SELECT CONVERT([Code], [ShortName], [Name], [LegalAddress], [Status])
FROM OPENROWSET(BULK, @pathToXml, SINGLE_CLOB) as x

COMMIT TRANSACTION

END

CREATE PROCEDURE [dbo].[LegalContractorsDataSynchronize] 
(
    @pathToXml varchar
)
AS
BEGIN

BEGIN TRANSACTION

DELETE FROM [dbo].[LegalContractors];

;WITH XmlFile (xmlData) AS
(
   SELECT TRY_CAST(BulkColumn AS XML) 
   FROM OPENROWSET(BULK @pathToXml, SINGLE_BLOB) AS x
)
INSERT INTO [dbo].[LegalContractors] ([Code], [ShortName], [Name], [LegalAddress], [Status])
SELECT c.value('(EDRPOU/text())[1]','NVARCHAR(100)') AS [Code]
   , c.value('(SHORT_NAME/text())[1]','NVARCHAR(512)') AS [ShortName]
    , c.value('(NAME/text())[1]','NVARCHAR(2048)') AS [Name]
   , c.value('(ADDRESS/text())[1]','NVARCHAR(2048)') AS [LegalAddress]
   , c.value('(STAN/text())[1]','NVARCHAR(100)') AS [Status]
FROM XmlFile CROSS APPLY xmlData.nodes('/DATA/RECORD') AS t(c);

COMMIT TRANSACTION

END

-- DDL and sample data population, start
DECLARE @tbl TABLE (
   ID INT IDENTITY PRIMARY KEY,
   Code NVARCHAR(50) NOT NULL,
   ShortName NVARCHAR(100) NOT NULL,
   [Name] NVARCHAR(100) NOT NULL,
   LegalAddress NVARCHAR(100) NOT NULL,
   [Status] NVARCHAR(50) NOT NULL
);
-- DDL and sample data population, end

-- Method #1
-- XML file is hardcoded
;WITH XmlFile (xmlData) AS
(
    SELECT TRY_CAST(BulkColumn AS XML) 
    FROM OPENROWSET(BULK 'c:\...\Ukraine.xml', /*CODEPAGE = '65001',*/ SINGLE_BLOB) AS x
)
INSERT INTO @tbl (Code, ShortName, [Name], LegalAddress, [Status])
SELECT c.value('(EDRPOU/text())[1]','NVARCHAR(50)') AS [Code]
   , c.value('(SHORT_NAME/text())[1]','NVARCHAR(100)') AS [ShortName]
    , c.value('(NAME/text())[1]','NVARCHAR(100)') AS [Name]
   , c.value('(ADDRESS/text())[1]','NVARCHAR(100)') AS [LegalAddress]
   , c.value('(STAN/text())[1]','NVARCHAR(50)') AS [Status]
FROM XmlFile CROSS APPLY xmlData.nodes('/DATA/RECORD') AS t(c);

-- test
SELECT * FROM @tbl;

-- Method #2
-- dynamic XML file name as a parameter
DECLARE @xml XML
   , @sql NVARCHAR(MAX)
   , @fileName VARCHAR(256) = 'c:\...\Ukraine.xml';

SET @sql = N'SELECT @xmlOut = XmlDoc FROM OPENROWSET (BULK ' + QUOTENAME(@fileName,NCHAR(39)) + ', SINGLE_BLOB) AS Tab(XmlDoc)';

EXEC master.sys.sp_executesql @sql, N'@xmlOut XML OUTPUT', @xmlOut = @xml OUTPUT;

INSERT INTO @tbl (Code, ShortName, [Name], LegalAddress, [Status])
SELECT c.value('(EDRPOU/text())[1]','NVARCHAR(50)') AS [Code]
   , c.value('(SHORT_NAME/text())[1]','NVARCHAR(100)') AS [ShortName]
    , c.value('(NAME/text())[1]','NVARCHAR(100)') AS [Name]
   , c.value('(ADDRESS/text())[1]','NVARCHAR(100)') AS [LegalAddress]
   , c.value('(STAN/text())[1]','NVARCHAR(50)') AS [Status]
FROM @xml.nodes('/DATA/RECORD') AS t(c);

-- test
SELECT * FROM @tbl;