将xml字符串参数传递给SQL Server存储过程

Question

我将xml字符串传递给SQL Server中的存储过程,以便将10000条记录插入到我的表中.在这个时我调用这个存储过程.想要检查带有我传递的xml字符串的SQL Server表,如果记录存在我不想插入,如果是单独记录必须插入的新记录.给出一些解决方案.谢谢.

  ALTER procedure [dbo].[SP_CMSUSER1]
      (@xmlString ntext)
    as
    begin

      DECLARE @idoc INT
      DECLARE @data nvarchar(100)

      EXEC sp_xml_preparedocument @idoc OUTPUT, @xmlString

    INSERT INTO dbo.Seg_RecipientsTemp (ContactID,first_name,last_name,company,email,last_updated)
    SELECT ContactID,
    first_name,
    last_name,
    company,
    email,
    last_updated FROM OPENXML(@idoc,

    '/NewDataSet/ContactData', 6)

    WITH

    (ContactID int ,
    first_name nvarchar(50), 
    last_name  nvarchar(50), 
    company    nvarchar(max),
    email nvarchar(100), 
    last_updated datetime 



    )
    end

我的Xml是:

 <NewDataSet>
  <Table>
    <ContactID>2</ContactID>
    <last_name>klklk</last_name>
  </Table>
  <Table>
    <ContactID>4</ContactID>
    <first_name>k</first_name>
    <last_name>kk</last_name>
    <company>k</company>
  </Table>
  <Table>
    <ContactID>6</ContactID>
    <first_name>naveen</first_name>
    <last_name />
    <company>inno</company>
  </Table>
  <Table>
    <ContactID>7</ContactID>
    <first_name>sridar</first_name>
    <last_name />
    <company>mahindara</company>
  </Table>
  <Table>
    <ContactID>1</ContactID>
    <first_name>terst</first_name>
  </Table>
  <Table>
    <ContactID>2</ContactID>
    <first_name />
    <last_name>ask</last_name>
    <company />
  </Table>
</NewDataSet>

Answer 1

定义存储过程以获取XML类型的参数(不要再使用ntext了!它已被弃用).并且不要sp_为存储过程使用前缀 - 它是Microsoft内部使用的保留前缀,会导致性能下降 - 使用其他内容!(或者根本不使用任何前缀)

 ALTER procedure [dbo].InsertCmsUser
      @xmlString XML
 AS
     ......

试试这个(使用SQL Server 2005及更新版本中的原生 XQuery方法,而不是相当混乱的界面......):OPENXML

;WITH CTE AS
(
    SELECT
        ContactID = XTbl.value('(ContactID)[1]', 'int'),
        FirstName = XTbl.value('(first_name)[1]', 'varchar(50)'),
        LastName = XTbl.value('(last_name)[1]', 'varchar(50)'),
        Company = XTbl.value('(company)[1]', 'varchar(50)')
    FROM 
        @input.nodes('/NewDataSet/Table') AS XD(XTbl)
)
INSERT INTO 
    dbo.Seg_RecipientsTemp (ContactID, first_name, last_name, company, last_updated)
    SELECT 
        ContactID,
        FirstName,
        LastName,
        Company,
        GETDATE()
    FROM
        CTE
    WHERE
        NOT EXISTS (SELECT * FROM dbo.Seg_RecipientsTemp WHERE ContactID = CTE.ContactID)

我没有email在你的XML中找到任何属性 - 不确定你想从哪里得到它....

更新:好的,所以你似乎也有真正的 XML中的<last_updated>元素....

<last_updated>2012-09-12T22:59:10.813+05:30</last_updated>

这看起来像DATETIMEOFFSET对我来说 - 因为它+05:30有时区添加.

在这种情况下,请使用此代码:

;WITH CTE AS
(
    SELECT
        ContactID = XTbl.value('(ContactID)[1]', 'int'),
        FirstName = XTbl.value('(first_name)[1]', 'varchar(50)'),
        LastName = XTbl.value('(last_name)[1]', 'varchar(50)'),
        Company = XTbl.value('(company)[1]', 'varchar(50)'),
            LastUpdated = XTbl.value('(last_updated)[1]', 'datetimeoffset')
    FROM 
        @input.nodes('/NewDataSet/Table') AS XD(XTbl)
)
INSERT INTO 
    dbo.Seg_RecipientsTemp (ContactID, first_name, last_name, company, last_updated)
    SELECT 
        ContactID,
        FirstName,
        LastName,
        Company,
        LastUpdated
    FROM
        CTE
    WHERE
        NOT EXISTS (SELECT * FROM dbo.Seg_RecipientsTemp WHERE ContactID = CTE.ContactID)