Sql oracle XML到数据库表

我有这样的XML。我无法将其解析为表

  <REQMST>
  <ROW>
    <REQ_ID>668 </REQ_ID>    
      <RequestDetails>
      <REQ_DTL_ID>845</REQ_DTL_ID>
      <INTERFACE_REFNUM>1</INTERFACE_REFNUM>
      </RequestDetails>
      <RequestDetails>
      <REQ_DTL_ID>846</REQ_DTL_ID>
      <INTERFACE_REFNUM>2</INTERFACE_REFNUM>
       </RequestDetails>     
    </ROW>
</REQMST>

668
845
1.
846
2.

我试图使用

select *  
FROM XMLTABLE('/REQMST/ROW'  
         PASSING   
            xmltype('
           <REQMST>
  <ROW>
    <REQ_ID>668 </REQ_ID>    
      <RequestDetails>
      <REQ_DTL_ID>845</REQ_DTL_ID>
      <INTERFACE_REFNUM>1</INTERFACE_REFNUM>
      </RequestDetails>
      <RequestDetails>
      <REQ_DTL_ID>846</REQ_DTL_ID>
      <INTERFACE_REFNUM>2</INTERFACE_REFNUM>
       </RequestDetails>     
    </ROW>
</REQMST>')
         COLUMNS  
            --describe columns and path to them:  
            REQ_ID  varchar2(20)                 PATH './REQ_ID',
            REQ_DTL_ID  varchar2(20)           PATH './RequestDetails/REQ_DTL_ID',
            INTERFACE_REFNUM varchar2(20)      PATH './RequestDetails/INTERFACE_REFNUM'
     ) xmlt  
;  

选择*
从XMLTABLE（“/requmst/ROW”
经过
xmltype（'
668
845
1.
846
2.
')
柱
--描述列及其路径：
请求ID varchar2（20）路径“/”请求ID“，
REQ_DTL_ID varchar2（20）路径'./RequestDetails/REQ_DTL_ID'，
接口\u REFNUM varchar2（20）路径'./RequestDetails/INTERFACE\u REFNUM'
)xmlt
;  

我得到错误

ORA-19279:XPTY0004-XQuery动态类型不匹配：预期的单例序列-得到多项序列

---

如果只有一个RequestDetails，它就可以工作了。您需要使用与父项相同的技术，从

RequestDetails

标记中再向下一级获取详细信息

使用列名

xml

获取xml作为xmltype列，然后在其上使用xmltable获取更多详细信息：

试试这个：

select xmlt.req_id, x.REQ_DTL_ID, x.INTERFACE_REFNUM
FROM XMLTABLE('/REQMST/ROW'  
         PASSING   
            xmltype('
           <REQMST>
                <ROW>
                    <REQ_ID>668 </REQ_ID>    
                    <RequestDetails>
                        <REQ_DTL_ID>845</REQ_DTL_ID>
                        <INTERFACE_REFNUM>1</INTERFACE_REFNUM>
                    </RequestDetails>
                    <RequestDetails>
                        <REQ_DTL_ID>846</REQ_DTL_ID>
                        <INTERFACE_REFNUM>2</INTERFACE_REFNUM>
                    </RequestDetails>     
                </ROW>
            </REQMST>')
         COLUMNS  
            --describe columns and path to them:  
            REQ_ID  varchar2(20)                 PATH 'REQ_ID',
            xml  xmltype         PATH 'RequestDetails'
     ) xmlt,  xmltable('/RequestDetails'
        passing xmlt.xml
        columns
             REQ_DTL_ID  varchar2(20)           PATH 'REQ_DTL_ID',
            INTERFACE_REFNUM varchar2(20)      PATH 'INTERFACE_REFNUM'
     ) x;

REQ_ID  REQ_DTL_ID  INTERFACE_REFNUM
668     845         1
668     846         2