Oracle XMLQuery uszkadza przestrzeń nazw

Wydaje się, że to oczekiwane zachowanie, zgodnie z My Oracle Support ID dokumentu 2060374.1. Ale po odrobinie eksperymentów wydaje się, że użycie symboli wieloznacznych w przestrzeni nazw w XPath zatrzymuje to; więc:

  <patent>{$m/*:patent/@*}
  {
    for $i in $m/*:patent/*
        return    $i
  }
  </patent>' 

Z oryginalnymi danymi (w wersji 11.2.0.4) i zserializowanymi, aby sformatować je bardziej czytelnie:

 WITH tmpTable AS (
SELECT * FROM XML_DOCUMENT_TMP cm )
SELECT tt.xml_data ,
XMLSerialize(DOCUMENT
XMLQuery('declare default element namespace  "http://schemas.thomson.com/ts/20041221/tsip";
      declare namespace  tsip="http://schemas.thomson.com/ts/20041221/tsip";
      declare namespace  tsxm="http://schemas.thomson.com/ts/20041221/tsxm";

      let $patsLus := $m/patent/*

      return          
      <patent>{$m/*:patent/@*}
      {
        for $i in $m/*:patent/*
            return    $i
      }
      </patent>' 
            PASSING tt.xml_data as "m"   RETURNING CONTENT)
 AS VARCHAR2(4000) INDENT SIZE = 2) ewXml 
 FROM tmpTable tt
 WHERE tt.document_id in (1);

XML_DATA
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
NEWXML
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
<patent xmlns="http://schemas.thomson.com/ts/20041221/tsip" xmlns:tsip="http://schemas.thomson.com/ts/20041221/tsip" xmlns:tsxm="http://schemas.thomson.com/ts/20041221/tsxm" tsip:action="replace" tsip:cc="CA" tsip:se="2715340" tsi
p:ki="C">
  <accessions tsip:action="replace">
    <accession tsip:src="wila" tsip:type="key">CA-2715340-C</accession>
    <accession tsip:src="tscm" tsip:type="tscmKey">CA-2715340-C-20150804</accession>
  </accessions>
  <claimed tsip:action="replace">
    <claimsTsxm tsip:lang="en">
      <tsxm:heading tsxm:align="left">We Claim:</tsxm:heading>
      <claimTsxm tsip:no="1" tsxm:num="1" tsip:type="main">1.  power.</claimTsxm>
    </claimsTsxm>
  </claimed>
</patent>
<patent xmlns="http://schemas.thomson.com/ts/20041221/tsip" xmlns:tsip="http://schemas.thomson.com/ts/20041221/tsip" tsip:action="replace" tsip:cc="CA" tsip:se="2715340" tsip:ki="C">                                                
  <accessions xmlns="http://schemas.thomson.com/ts/20041221/tsip" xmlns:tsip="http://schemas.thomson.com/ts/20041221/tsip" tsip:action="replace">                                                                                     
    <accession tsip:src="wila" tsip:type="key">CA-2715340-C</accession>                                                                                                                                                               
    <accession tsip:src="tscm" tsip:type="tscmKey">CA-2715340-C-20150804</accession>                                                                                                                                                  
  </accessions>                                                                                                                                                                                                                       
  <claimed xmlns="http://schemas.thomson.com/ts/20041221/tsip" xmlns:tsip="http://schemas.thomson.com/ts/20041221/tsip" tsip:action="replace">                                                                                        
    <claimsTsxm tsip:lang="en">                                                                                                                                                                                                       
      <tsxm:heading xmlns:tsxm="http://schemas.thomson.com/ts/20041221/tsxm" tsxm:align="left">We Claim:</tsxm:heading>                                                                                                               
      <claimTsxm tsip:no="1" xmlns:tsxm="http://schemas.thomson.com/ts/20041221/tsxm" tsxm:num="1" tsip:type="main">1.  power.</claimTsxm>                                                                                            
    </claimsTsxm>                                                                                                                                                                                                                     
  </claimed>                                                                                                                                                                                                                          
</patent>                                                                                                                                                                                                                             

To nie jest identyczne z oryginałem, ale nie ma już uszkodzenia przestrzeni nazw. Czy możesz to zrobić w prawdziwym zapytaniu i czy symbol wieloznaczny powoduje jakiekolwiek problemy, to inna sprawa...