如何使用户定义的CLOB聚合函数按顺序返回数据？

Question

我有这个CLOBAGG()函数聚合我的数据。问题是我总是得到这种形式：

|14|  |Something  | |
|1 |  |Something  | |
|2 |  |Something  | |
|3 |  |Something  | |
|4 |  |Something  | |
|5 |  |Something  | |
|6 |  |Something  | |
|7 |  |Something  | |
|8 |  |Something  | |
|9 |  |Something  | |
|10|  |Something  | |
|11|  |Something  | |
|12|  |Something  | |
|13|  |Something  | |

在这种情况下，数据无关紧要。我希望从1到14得到结果。我的功能有问题，我不知道是什么。

这是功能：

create or replace type clobagg_type as object
   (
   text clob,
   static function ODCIAggregateInitialize(sctx in out clobagg_type) return number,
   member function ODCIAggregateIterate(self in out clobagg_type, value in clob) return number,
   member function ODCIAggregateTerminate(self in clobagg_type, returnvalue out clob, flags in number) return number,
   member function ODCIAggregateMerge(self in out clobagg_type, ctx2 in
clobagg_type) return number
   );

create or replace type body clobagg_type is
   static function ODCIAggregateInitialize(sctx in out clobagg_type) return number is
   begin
     sctx := clobagg_type(null) ;
     return ODCIConst.Success ;
   end;
   member function ODCIAggregateIterate(self in out clobagg_type, value in clob) return number is
   begin
     self.text :=        self.text || value ;
     return ODCIConst.Success;
   end;
   member function ODCIAggregateTerminate(self in clobagg_type, returnvalue out clob, flags in number) return number is
   begin
     returnValue := self.text;
     return ODCIConst.Success;
   end;
   member function ODCIAggregateMerge(self in out clobagg_type, ctx2 in
clobagg_type) return number is
   begin
     self.text :=         self.text || ctx2.text  ;
     return ODCIConst.Success;
   end;
end;

我按如下方式调用该函数：

CREATE TABLE TEST_STEPS (
test_case_id NUMBER(9,0),
test_steps CLOB
);

INSERT INTO TEST_STEPS(test_case_id,test_steps)
select test_case_id , clobagg(activity || chr(10)) as test_steps  
  from ( select test_case_id
              , clobagg(' |' || AKTIVITÄT_NR || ' |' || AKTIVITÄT_KÜRZEL  || ' |' || AKTIVITÄT_BESCHREIBUNG || ' |' || AKTIVITÄT_ERWARTETES_ERGEBNIS|| ' |' ||  CHR(10))  as activity  
           from TEST_STEPS_ORDERED
          group by test_case_id, TESTSCHRITT_NR
                 , CAST(TESTSCHRITT_BEZEICHNUNG AS varchar(600))
                 , CAST(TESTSCHRITT_BESCHREIBUNG AS varchar(600))
          order by test_case_id, testschritt_nr
                   )
 group by test_case_id

当我通过test_case_id订购数据ASC时，AKTIVITÄT_NR我从1到14得到AKTIVITÄT_NR，因此它正常工作但函数CLOBAGG()的结果是：

|1 | |Something | |
|14| |Something | |
|13| |Something | |
|12| |Something | |
|11| |Something | |
|10| |Something | |
|9 | |Something | |
|8 | |Something | |
|7 | |Something | |
|6 | |Something | |
|5 | |Something | |
|4 | |Something | |
|3 | |Something | |
|2 | |Something | |

表TEST_STEPS_ORDERED看起来像这样