Oracle删除XMLTYPE中的多个节点

时间:2016-02-25 15:31:51

标签: oracle plsql xmltype

我有一个XMLTYPE内容,我想删除该XML中的多个标记。

我正在使用XMLQUERY删除recordType中的代码Header,如下所示:

   SELECT XMLQUERY (
             'copy $i := $p modify
                  delete nodes $i//Header/recordType
                return $i'
             PASSING pv_header AS "p" RETURNING CONTENT)
     INTO result
     FROM DUAL;

如果我想删除多个标记而不使用XMLQUERY创建新的SELECT语句,该怎么办?我不能这样做:

SELECT XMLQUERY (
                 'copy $i := $p modify
                      delete nodes $i//Header/recordType
                      delete nodes $i//Header/interfaceType
                    return $i'
                 PASSING pv_header AS "p" RETURNING CONTENT)
         INTO result
         FROM DUAL;

注意:我可以使用deleteXML,但它在Oracle 12c中被声明为已弃用的函数。

提前致谢! 菲利普

编辑:我使用此作为参考:https://docs.oracle.com/database/121/ADXDB/xdb04cre.htm#ADXDB6086

1 个答案:

答案 0 :(得分:1)

您可以对delete nodes进行一系列调用,括在括号中进行分组,并用逗号分隔以进行序列连接:

WITH t (pv_header) AS (
  SELECT xmltype('<Header><recordType/><interfaceType/><other/></Header>')
  FROM dual
)
SELECT XMLQUERY (
  'copy $i := $p modify
    (delete nodes $i//Header/recordType,
      delete nodes $i//Header/interfaceType)
    return $i'
  PASSING pv_header AS "p" RETURNING CONTENT)
FROM t;

XMLQUERY('COPY$I:=$PMODIFY(DELETENODES$I//HEADER/RECORDTYPE,DELETENODES$I//HEADE
--------------------------------------------------------------------------------
<Header><other/></Header>