使用xml.modify将参数插入xml列的特定元素

Question

我想使用存储过程将作为参数传入的一些值插入到列的xml中的元素中。 到目前为止我有这个以下参数：

@profile_id int,
@user_id nvarchar(50),
@activity_name nvarchar(50),
@display_name nvarchar(50)

检索所需的xml：

DECLARE @profiles_xml xml
SET @profiles_xml = (SELECT profiles from tbl_applied_profiles WHERE profiles.value('(Profile/ID)[1]','int')= @profile_id)

@profiles_xml中的列中的xml如下所示：

<Profile>
  <ID>20</ID>
  <User>
    <ID>BC4A18CA-AFB5-4268-BDA9-C990DAFE7783</ID>
    <Name>somename</Name>
    <Activities>
      <Activity>
         <Name>activity1</Name>
      </Activity>
    </Activities>
  </User>
</Profile>

尝试使用特定ID向活动用户名和显示名称插入用户：

SET @profiles_xml.modify('
    insert
    if(/Profile/User/ID=sql:variable("@user_id"))
    then Activity[Name=sql:variable("@activity_name")][DisplayName=sql:variable("@display_name")]
    else()
    as first
    into (/Profile/User/Activities)[1]')

我也试过这个没有成功：

 SET @devices_xml.modify('
    insert /Profile/User[ID=sql:variable("@user_id")]/Activity[Name=sql:variable("@activity_name")][DisplayName=sql:variable("@display_name")]
    into (/Profile/User/Activities)[1]')

还有这个：

 SET @devices_xml.modify('
insert
 /Profile/User[ID=sql:variable("@user_id")]/Activities/Activity[Name=sql:variable("@activity_name")][DisplayName=sql:variable("@display_name")]
    into (/Profile/User/Activities)[1]')

这样做的正确方法是什么？

Answer 1

declare @XML xml = '
<Profile>
  <ID>20</ID>
  <User>
    <ID>BC4A18CA-AFB5-4268-BDA9-C990DAFE7783</ID>
    <Name>somename</Name>
    <Activities>
      <Activity>
         <Name>activity1</Name>
      </Activity>
    </Activities>
  </User>
</Profile>'

declare @user_id nvarchar(50) = '20'
declare @activity_name nvarchar(50) = 'activity1'
declare @display_name nvarchar(50) = 'displayname1'

set @xml.modify('insert <DisplayName>{sql:variable("@display_name")}</DisplayName>
                 into (/Profile[ID = sql:variable("@user_id")]
                       /User/Activities/
                       Activity[Name = sql:variable("@activity_name")])[1]')

结果：

<Profile>
  <ID>20</ID>
  <User>
    <ID>BC4A18CA-AFB5-4268-BDA9-C990DAFE7783</ID>
    <Name>somename</Name>
    <Activities>
      <Activity>
        <Name>activity1</Name>
        <DisplayName>displayname1</DisplayName>
      </Activity>
    </Activities>
  </User>
</Profile>

Answer 2

试试这个

declare @ins xml 
    '<Activity><Name>'+
    @activity_name+
    '</Name><DisplayName>'
    +@display_name+
    '</DisplayName></Activity>'
SET @devices_xml.modify('
    insert sql:variable("@ins") into (/Profile[ID=sql:variable("@user_id")]/User/Activities)[1]')

要么

SET @devices_xml.modify('
      insert <Activity>
             <Name>{sql:variable("@activity_name")}</Name>
             <DisplayName>{sql:variable("@display_name")}</DisplayName>
             </Activity> 
      into (/Profile[ID=sql:variable("@user_id")]/User/Activities)[1]'    )

Answer 3

不确定我是否完全理解你的逻辑，但你可以使用带有大括号的sql：variable插入到xml中，例如

DECLARE @profiles_xml xml

set @profiles_xml = '<Profile>
  <ID>20</ID>
  <User>
    <ID>BC4A18CA-AFB5-4268-BDA9-C990DAFE7783</ID>
    <Name>somename</Name>
    <Activities>
      <Activity>
         <Name>activity1</Name>
      </Activity>
    </Activities>
  </User>
</Profile>'


SELECT 'before' s, DATALENGTH(@profiles_xml) dl, @profiles_xml

DECLARE @user_id CHAR(36), @activity_name NVARCHAR(MAX), @display_name NVARCHAR(MAX)
SELECT @user_id = 'BC4A18CA-AFB5-4268-BDA9-C990DAFE7783', @activity_name = 'TEST ACTIVITY NAME', @display_name = 'TEST DISPLAY NAME'

SET @profiles_xml.modify('
    insert <Activity><Name>{sql:variable("@activity_name")}</Name><DisplayName>{sql:variable("@display_name")}</DisplayName></Activity>
    as first
    into (/Profile/User/Activities)[1]')

SELECT 'after' s, DATALENGTH(@profiles_xml) dl, @profiles_xml