Sample Data Comma Query

Question

Hi,
I have this sample data:
WITH gl_status AS
(SELECT 'EP01' status, 'This Bit' status_meaning FROM DUAL UNION ALL
SELECT 'EP02' status, 'That Bit' status_meaning FROM DUAL UNION ALL
SELECT 'EP03' status, 'Another Bit' status_meaning FROM DUAL UNION ALL
SELECT 'EM27' status, 'Green Bit' status_meaning FROM DUAL)
, tbl_data AS
(SELECT 'EP01' status FROM DUAL UNION ALL
SELECT 'EP02' FROM DUAL UNION ALL
SELECT 'EP03' FROM DUAL UNION ALL
SELECT 'EP02,EP03' FROM DUAL UNION ALL
SELECT 'EM27' FROM DUAL)
SELECT * FROM gl_status, tbl_data
WHERE tbl_data.status = gl_status.status(+)
STATUS STATUS_MEANING STATUS_1
EP01   This Bit       EP01    
EP02   That Bit       EP02    
EP03   Another Bit    EP03    
EM27   Green Bit      EM27    
                      EP02,EP03
5 rows selected.Where there is a match between the status columns, when the status column in the tbl_data only contains one single status value, there is no problem.
Sometimes tbl_data contains 2 values split by a comma.
I just wondered if there is any way to split that out, so I could get somehow report on the status meaning for both items?
Any advice much appreciated.
Thanks
Edited by: 966480 on Mar 26, 2013 3:51 AM
Edited by: 966480 on Mar 26, 2013 3:52 AM

Answer 1

for 11g:
SQL> WITH gl_status AS
  2  (SELECT 'EP01' status, 'This Bit' status_meaning FROM DUAL UNION ALL
  3  SELECT 'EP02' status, 'That Bit' status_meaning FROM DUAL UNION ALL
  4  SELECT 'EP03' status, 'Another Bit' status_meaning FROM DUAL UNION ALL
  5  SELECT 'EM27' status, 'Green Bit' status_meaning FROM DUAL)
  6  , tbl_data(ID,status) AS
  7  (SELECT 1,'EP01' status FROM DUAL UNION ALL
  8  SELECT 2,'EP02' FROM DUAL UNION ALL
  9  SELECT 3,'EP03' FROM DUAL UNION ALL
10  SELECT 4,'EP02,EP03' FROM DUAL UNION ALL
11  SELECT 5,'EM27' FROM DUAL)
12  SELECT q.id,
13         listagg(q.status,',') WITHIN GROUP (ORDER BY q.status),
14         listagg( s.status_meaning,',') WITHIN GROUP (ORDER BY q.status)
15  FROM(
16  SELECT ID,
17         REGEXP_SUBSTR(status,
18                       '[^,]+',
19                       1,
20                       row_number() over(partition by ID order by status)) status
21     FROM tbl_data, TABLE(SELECT COLLECT(ROWNUM) FROM dual CONNECT BY INSTR(status, ',', 1, level - 1) > 0)
22  ) q
23  JOIN gl_status s
24  ON s.status = q.status
25  GROUP BY q.id
26  /
        ID LISTAGG(Q.STATUS,',')WITHINGRO                                                   LISTAGG(S.STATUS_MEANING,',')W
         1 EP01                                                                             This Bit
         2 EP02                                                                             That Bit
         3 EP03                                                                             Another Bit
         4 EP02,EP03                                                                     That Bit,Another Bit
         5 EM27                                                                             Green Bit
SQL> Edited by: Ramin Hashimzadeh on Mar 27, 2013 6:03 PM