Question

我正在使用循环创建父XML，我想在其中插入另一个XML。有没有办法将我的第二个XML插入第一个XML？

每个家庭的外圈

每个家庭的孙子的内在循环

SELECT XMLELEMENT ("grandkids"    
                       ,XMLELEMENT("kid1", 'ron')  
                       ,XMLELEMENT("age", '12')  
) INTO TESTXML2 FROM DUAL;

END GRANDKIDS LOOP;

SELECT XMLELEMENT ("Family"  
                     ,XMLELEMENT("father", 'myFather')  
                     ,XMLELEMENT("mother", 'myMother')  
                     ,XMLELEMENT("children", '2')  
                             <---INSERT TESTXML2 HERE--->
) INTO TESTXML FROM DUAL;

结束家庭循环；

如何将TESTXML2插入TESTXML1中？

可以在创建FamilyXML时插入它，也可以在将FamilyXML插入数据库后更新。

Answer 1

您可以只引用您的testxml2变量：

declare
  testxml xmltype;
  testxml2 xmltype;
begin

SELECT XMLELEMENT ("grandkids"    
                       ,XMLELEMENT("kid1", 'ron')  
                       ,XMLELEMENT("age", '12')  
) INTO TESTXML2 FROM DUAL; 

dbms_output.put_line(testxml2.getstringval());

SELECT XMLELEMENT ("Family"  
                     ,XMLELEMENT("father", 'myFather')  
                     ,XMLELEMENT("mother", 'myMother')  
                     ,XMLELEMENT("children", '2')  
                     ,testxml2
) INTO TESTXML FROM DUAL; 

dbms_output.put_line(testxml.getstringval());

end;
/

<grandkids><kid1>ron</kid1><age>12</age></grandkids>
<Family><father>myFather</father><mother>myMother</mother><children>2</children><grandkids><kid1>ron</kid1><age>12</age></grandkids></Family>

PL/SQL procedure successfully completed.

或将所有嵌套的XMLElement调用放在一个查询中：

declare
  testxml xmltype;
begin

SELECT XMLELEMENT ("Family"  
                     ,XMLELEMENT("father", 'myFather')  
                     ,XMLELEMENT("mother", 'myMother')  
                     ,XMLELEMENT("children", '2')  
                     ,XMLELEMENT ("grandkids"    
                       ,XMLELEMENT("kid1", 'ron')  
                       ,XMLELEMENT("age", '12')  
                      )
) INTO TESTXML FROM DUAL; 

dbms_output.put_line(testxml.getstringval());

end;
/

<Family><father>myFather</father><mother>myMother</mother><children>2</children><grandkids><kid1>ron</kid1><age>12</age></grandkids></Family>

PL/SQL procedure successfully completed.

如果您实际上是从表中获取数据，请查看XMLAgg，XMLForest等。

将子XMLElement添加到现有XML

1 个答案: