concatenate the output values in oracle plsql - oracle

Question

create table item_value_tab
as
select 1110 Item_value,000394 bb_to_no, 55555 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000394 bb_to_no, 66666 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000394 bb_to_no, 77777 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000123 bb_to_no, 1111 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000124 bb_to_no, 2222 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000124 bb_to_no, 3333 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000011 bb_to_no, 75257 order_number, 'ABC' cust_no from dual
union all
select 1110 Item_value,000011 bb_to_no, 65257 order_number, 'ABC' cust_no from dual;
Take below code in Cursor 1
SELECT DISTINCT DECODE(nvl(Item_value,0),bb_to_no,null,'Item Value '||nvl(bb_to_no,0)||' Is not correct for order number '||order_number||' FOR Customer '||cust_no) vmsg
from item_value_tab;
Getting Output
Item Value 000394 Is not correct for order number 55555 FOR Customer ABC
Item Value 000394 Is not correct for order number 66666 FOR Customer ABC
Item Value 000394 Is not correct for order number 77777 FOR Customer ABC
Item Value 000123 Is not correct for order number 1111 FOR Customer ABC
Item Value 000124 Is not correct for order number 2222 FOR Customer ABC
Item Value 000124 Is not correct for order number 3333 FOR Customer ABC
Item Value 000011 Is not correct for order number 75257 FOR Customer ABC
Item Value 000011 Is not correct for order number 65257 FOR Customer ABC
-------------------------------------------------------------------------------
create table item_not_tab
as
select 0 item_id,53555 bb_to_no,1052 order_number,'AAA' cust_no from dual
union all
select 0 item_id,53655 bb_to_no,1138 order_number,'AAA' cust_no from dual;
Need to take the below code in cursor 2
select DECODE(nvl(item_id,0),0,'items not created for '||bb_to_no||'order number '||order_number||' FOR Customer '||cust_no,NULL) vmsg
from item_not_tab;
Getting Output
items not created for 53555 order number 1052 FOR Customer AAA
items not created for 53655 order number 1052 FOR Customer AAA
Expected output
Item Value Problems
Item Value 000394 Is not correct for order number 55555,66666,77777 FOR Customer ABC
Item Value 000123,000124 Is not correct for order number 1111 FOR Customer ABC
Item Value 000124 Is not correct for order number 2222,3333 FOR Customer ABC
Item Value 000011 Is not correct for order number 75257,65257 FOR Customer ABC
Items not found Problems
items not created for 53555,53655 order number 1052 FOR Customer AAA
note: please don't joins both tables in one cursor, I need to take 2 cursors. Both tables are same actually, but test case purpose I have as 2 d/f tables
oracle 11g 1.1 and 1.2

Answer 1

You need to first concatenate the tot_number inside the LOOP, and then use the value outside the LOOP.
For example,
SQL> SET serveroutput ON
SQL> DECLARE
2 v VARCHAR2(100);
3 BEGIN
4 FOR i IN
5 (SELECT 55555 str FROM dual
6 UNION
7 SELECT 66666 str FROM dual
8 UNION
9 SELECT 77777 str FROM dual
10 )
11 LOOP
12 v:= ltrim(v||','||i.str, ',');
13 END LOOP;
14 dbms_output.put_line('Output is concatenated '||v);
15 END;
16 /
Output is concatenated 55555,66666,77777
PL/SQL procedure successfully completed.
SQL>

Answer 2

Please Check the below QUERY :
SELECT DISTINCT o.bb_to_no,
(SELECT listagg(order_number,',') WITHIN GROUP (ORDER BY 1 desc)
FROM item_value_tab i WHERE o.bb_to_no = i.bb_to_no) AS total_num,
(SELECT DISTINCT(k.cust_no) FROM item_value_tab k
WHERE o.bb_to_no = k.bb_to_no) AS cust_name
FROM item_value_tab o
(OR)
EDIT : Please check this.
//It create collection of type table to store all the order_numbers
CREATE OR REPLACE TYPE t_varchar2_tab AS TABLE OF NUMBER;
// Below procedure will concatenate the list of order_numbers stored in
// the above created collection type.
CREATE OR REPLACE FUNCTION tab_to_string
(p_varchar2_tab IN t_varchar2_tab,
p_delimiter IN VARCHAR2 DEFAULT ',') RETURN VARCHAR2 IS
l_string VARCHAR2(32767);
BEGIN
FOR i IN p_varchar2_tab.FIRST .. p_varchar2_tab.LAST LOOP
IF i != p_varchar2_tab.FIRST THEN
l_string := l_string || p_delimiter;
END IF;
l_string := l_string || p_varchar2_tab(i);
END LOOP;
RETURN l_string;
END tab_to_string;
SELECT bb_to_no,cust_no,
tab_to_string(CAST(COLLECT(order_number) AS t_varchar2_tab))
AS tot_number
FROM item_value_tab
GROUP BY bb_to_no,cust_no;
P.S : you can find more information on COLLECT() function on below link.
http://www.oracle-developer.net/display.php?id=306