oracle cursor, concat with loop run figure

I want to use a cursor to loop through a management reporting chain using the Connect By Prior from Oracle. The order is then reversed so the VP is at the top and the record i started with is at the bottom (A.Corpid).

there's a cursor C1 on top that retrieves corpid following certain criteria

Each Canonical Name returned from that table (say f.i it has 6 rows) i want to store in defined TIER1,TIER2, TIER3 variables.

Somehow i can't figure out how to combine the word 'TIER' with the row number i

DECLARE 
cursor c1 is
select distinct corpid, cn from Mytable where Country ='ITA';
master varchar2(50);
Tier1 varchar2(50);
Tier2 varchar2(50);
Tier3 varchar2(50);
Tier4 varchar2(50);
Tier5 varchar2(50);
Tier6 varchar2(50);
Tier7 varchar开发者_如何学Go2(50);
Tier8 varchar2(50);
Begin
for rec in c1
loop
dbms_output.put_line(rec.cn);

   DECLARE 
   Cursor C2 is

    SELECT CN  FROM Mytable A CONNECT BY PRIOR A.reportsto=A.corpid 
    START WITH A.corpid=rec.corpid
    order by rownum desc;

        Begin
        open C2;
        for i in 1..8 loop
            fetch C2 into master;
            dbms_output.put_line(master);
              'Tier'||to_char(i)) :=master ;  
            end loop;
            end;

     if TIER1 is null then
    TIER1:='';
    end if;
*/ remmed out until the variable assignments work */
-- update mytable set VP_TIER1=TIER1 where corpid=rec.corpid; 
end loop;
end;

Oracle complains about the '||'

(ORA-06550: line 33, column 31: PLS-00103: Encountered the symbol "|" when expecting one of the following: := . ( @ % ; )

I've tried as well to concat but that didn't work either

ORA-06550: line 33, column 26: PLS-00306: wrong number or types of arguments in call to 'CONCAT'

---

Your concatenation of the literal and variable aren't going to evaluate to the variable TIER1 like you are hoping. Try using arrays instead:

DECLARE  
    cursor c1
    is 
        select distinct corpid, cn
        from Mytable where Country ='ITA'; 
        master varchar2(50);
        TYPE Tier_arr_t IS TABLE OF VARCHAR2(50) INDEX BY PLS_INTEGER;
        Tier_arr TIER_ARR_T;  
Begin 
    for rec in c1 
    loop 
        dbms_output.put_line(rec.cn);

        DECLARE
            Cursor C2
            is
                SELECT CN 
                FROM Mytable A
                CONNECT BY PRIOR A.reportsto=A.corpid      
                START WITH A.corpid=rec.corpid     
                order by rownum desc;
        Begin
             open C2;

             for i in 1..8
             loop              
                  fetch C2 into master;
                  dbms_output.put_line(master);
                  Tier_arr(i) :=master ;
             end loop;
        end;

        if TIER1 is null
        then
              TIER1:='';
        end if;
        update mytable set VP_TIER1=Tier_arr(1), VP_TIER2=Tier_arr(2) where corpid=rec.corpid;
    end loop;  
end; 

There is also probably a more set-based approach to doing this which would be much preferred, but this should work if it is just a one-time need.