Question

我正在将XML文档导入SQL表。它是嵌套的xml。我需要做3张桌子。我决定使用游标。我在第一个光标的主节点上一行一行地查找。它完美地添加到第一个表中。将其添加到表后我想只使用另一个游标访问FROM OPENXML语句中的某些节点子节点。到目前为止，我设法读取每个子节点数据，而不仅仅是我感兴趣的一个。你能告诉我如何只进入我用第一个光标读取的那个cerain父节点的子节点吗？

<root>
  <mainnode> 
    <name>Main node 1</name>
    <children>
      <childrenname>Children name1</childrenname>
    </children>
    <children>
      <childrenname>Children name2</childrenname>
    </children>
  </mainnode>
  <mainnode> 
    <name>Main node 2</name>
    <children>
      <childrenname>Children name3</childrenname>
    </children>
    <children>
      <childrenname>Children name4</childrenname>
    </children>
  </mainnode>
</root>

让我们说这是我的数据XML结构。我通过批量函数添加它。我现在做的是

DECLARE @name varchar(400),
DECLARE kursor CURSOR LOCAL FORWARD_ONLY FOR SELECT name from OPENXML(@DocID, 'root/mainnode', 2)
WITH name

open kursor

FETCH NEXT FROM kursor into @name
WHILE @@FETCH_STATUS = 0
BEGIN 

--here i am adding record to first table, one by one with some insert
--and also here i need to reach children elements, but only of that certain mainnode 
 -- thats also the place to add second kursor
DECLARE childrenname varchar(400),
 DECLARE kursorchildren CURSOR LOCAL FORWARD_ONLY FOR SELECT childrenname from OPENXML(@DocID, 'root/mainnode/children', 2)
    WITH childrenname
OPEN kursorchildren
FETCH NEXT FROM kursorchildren into @childrenname
    WHILE @@FETCH_STATUS = 0
BEGIN
--here i want to insert into table again, but only that childrens that are from actual row, not every form document.
FETCH NEXT FROM kursorchildren into @childrenname

   END

      CLOSE kursorchildren
      DEALLOCATE kursorchildren



    FETCH NEXT FROM kursor into @name

        END

  CLOSE kursorClaimsMain
  DEALLOCATE kursorClaimsMain

Answer 1

尝试将其选择为普通表格，如下所示：

    declare @xml xml = N'<root>
  <mainnode> 
    <name>Main node 1</name>
    <children>
      <childrenname>Children name1</childrenname>
    </children>
    <children>
      <childrenname>Children name2</childrenname>
    </children>
  </mainnode>
  <mainnode> 
    <name>Main node 2</name>
    <children>
      <childrenname>Children name3</childrenname>
    </children>
    <children>
      <childrenname>Children name4</childrenname>
    </children>
  </mainnode>
</root>'

select 
     t.value('.','nvarchar(max)') as children_name
    ,t.value('(../name)[1]','nvarchar(max)') as node_name
    ,t.value('for $a in .. return 1+count($a/../*[. << $a])', 'int') as code_id
from @xml.nodes('root/mainnode/children') t(t)

您将获得每个主要代码和儿童列表的身份。因此，您可以提取到任何您想要的表格。

仅获取openxml中指定节点的子节点

1 个答案: