Procedure fails to compile, because of "Order By" on join table

Question

I am trying to convert a working script into a procedure. The script works fine, but when placed in a procedure, I get the following error:
[Error] Syntax check (4: 71): ERROR line 4, col 71, ending_line 4, ending_col 75, Found 'order', an alias is not allowed here (reserved for XMLCOLATTVAL, XMLFOREST and XMLATTRIBUTES only)
I am essentially trying to make sure that the values are ordered chronologically when placed into the string. Any ideas on why this fails as a procedure or how to ensure the chronological ordering?
I have also noticed that this error does not occur if I am only querying one table (no join, no order by other table field).
The Order By columns are unique to the second table. Aliasing doesn't help.
Jason
CREATE OR REPLACE PROCEDURE AHSANALYTICS.delme_jjs IS
tmpVar varchar2(3000);
BEGIN
        SELECT collect_to_string(CAST(COLLECT(TO_CHAR(cs_description) order by CL_DATE_REQUESTED desc) AS collect_table),' >> ') AS cs_description_collect
        into tmpvar
        FROM   f_consul_link            f_consul_link,
               f_consultations          f_consultations
        WHERE  f_consul_link.cl_pp_sequ      = 2973968 AND
               f_consul_link.cl_cs_sequ      = f_consultations.cs_sequ (+)
        GROUP BY cl_pp_sequ;
        dbms_output.put_line('tmpvar = '||tmpvar);
END delme_jjs;
/But the same code (minus the INTO) works fine as a script
SELECT collect_to_string(CAST(COLLECT(TO_CHAR(cs_description) order by CL_DATE_REQUESTED ASC, CL_SEQU ASC) AS collect_table),' >> ') AS cs_description_collect
FROM   f_consul_link            f_consul_link,
       f_consultations          f_consultations
WHERE  f_consul_link.cl_pp_sequ      = 2973968 AND
       f_consul_link.cl_cs_sequ      = f_consultations.cs_sequ (+)
GROUP BY cl_pp_sequ
;The "collect_to_string" function is this:
CREATE OR REPLACE FUNCTION AHSANALYTICS.collect_to_string (
    nt_in IN collect_table,
    delimiter_in IN VARCHAR2 DEFAULT ','
This function helps to concatenate a set of strings into a single field.
Author         :  http://oracle101.blogspot.com/2008/08/oracle-collect-function.html
Parameters     : collect_table and delimiter_in
Created Date   : 2011-Jan-10
Example Script :   CREATE OR REPLACE TYPE collect_table AS TABLE OF VARCHAR2 (4000);
                    SELECT
                      MAX(pp_sequ)
                    , MAX(RC.CONS_SEQ) AS ED_CONSULTS
                    , collect_to_string(CAST(COLLECT(RC.CONSULT_GROUP) AS collect_table),' >> ') AS temp123
                    , MIN(RC.CONSULT_REQUESTED_DT) AS ED_FIRST_CONSULT_DT
                    FROM HSA_TGT.redis_consults rc
                    WHERE
                      PP_SEQU = 1183707
                    GROUP BY pp_sequ;
Change History :
    yyyy-mmm-dd    Author   Description
    2011-Jan-10    JJS      Creation of script
    RETURN VARCHAR2
IS
    v_idx PLS_INTEGER;
    v_str VARCHAR2 (32767);
    v_dlm VARCHAR2 (10);
BEGIN
    v_idx := nt_in.FIRST;
    WHILE v_idx IS NOT NULL
    LOOP
        v_str := v_str || v_dlm || nt_in (v_idx);
        v_dlm := delimiter_in;
        v_idx := nt_in.NEXT (v_idx);
    END LOOP;
    RETURN v_str;
END collect_to_string;
/

Answer 1

Jason_S wrote:
David,
The issue only seems to arise when there are two tables joined, and the order by is based on the 'other' table.
JasonNot here....
SQL> create table another_table
  2  (   id number
  3  )
  4  /
SQL> declare
  2
  3      tmpvar      varchar2(100);
  4
  5  BEGIN
  6          SELECT collect_to_string
  7                  (   CAST
  8                      (   COLLECT
  9                          (   TO_CHAR(cs_description)
10                              order by id desc
11                          ) AS collect_table
12                      ),
13                      ' >> '
14                  ) AS cs_description_collect
15          into tmpvar
16          FROM   f_consul_link            f_consul_link,
17                  another_table
18          WHERE  f_consul_link.cl_pp_sequ      = 2973968
19          AND
20                  f_consul_link.cl_pp_sequ = another_table.id (+)
21          GROUP BY cl_pp_sequ;
22  END ;
23  /
PL/SQL procedure successfully completed.
SQL> declare
  2
  3      tmpvar      varchar2(100);
  4
  5  BEGIN
  6          SELECT collect_to_string
  7                  (   CAST
  8                      (   COLLECT
  9                          (   TO_CHAR(cs_description)
10                              order by id desc
11                          ) AS collect_table
12                      ),
13                      ' >> '
14                  ) AS cs_description_collect
15          into tmpvar
16          FROM   f_consul_link            f_consul_link,
17                  another_table
18          WHERE  f_consul_link.cl_pp_sequ      = 2973968
19          AND
20                  f_consul_link.cl_pp_sequ = another_table.id
21          GROUP BY cl_pp_sequ;
22  END ;
23  /
declare
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at line 6Again, maybe you could post your create table statements and full version of oracle....although it is fairly academic given the alternative ways to aggregate strings in the links provided.
David