Get multiple values into one field

Question

I want to get following two rows into one record.
Thank you in advance!
ID     Name     Category
109     John     C1
109     John     D8
Result:
ID     Name     Category
109     John     C1, D8

Answer 1

hi, i used centinul suggestion to create this is query.
WITH tablet AS
     (SELECT '109' AS ID, 'John' AS NAME, 'C1' AS CATEGORY
        FROM DUAL
      UNION ALL
      SELECT '109' AS ID, 'John' AS NAME, 'D8' AS CATEGORY
        FROM DUAL)
SELECT     ID, NAME,
           LTRIM
              (MAX (SYS_CONNECT_BY_PATH (CATEGORY, ','))KEEP (DENSE_RANK LAST ORDER BY ID),
              ) AS CATEGORY
      FROM (SELECT ID, NAME, CATEGORY,
                   ROW_NUMBER () OVER (PARTITION BY ID ORDER BY CATEGORY)
                                                                      AS curr,
                     ROW_NUMBER () OVER (PARTITION BY ID ORDER BY CATEGORY)
                   - 1 AS prev
              FROM tablet)
  GROUP BY ID, NAME
CONNECT BY prev = PRIOR curr AND ID = PRIOR ID
START WITH curr = 1;or
WITH tablet AS
     (SELECT '109' AS ID, 'John' AS NAME, 'C1' AS CATEGORY
        FROM DUAL
      UNION ALL
      SELECT '109' AS ID, 'John' AS NAME, 'D8' AS CATEGORY
        FROM DUAL)
SELECT     ID, NAME, SUBSTR (SYS_CONNECT_BY_PATH (CATEGORY, ','),
                             2)CATEGORY
      FROM (SELECT ID, NAME, CATEGORY, COUNT (*) OVER (PARTITION BY ID) cnt,
                   ROW_NUMBER () OVER (PARTITION BY ID ORDER BY CATEGORY) seq
              FROM tablet)
     WHERE seq = cnt
START WITH seq = 1
CONNECT BY PRIOR seq + 1 = seq AND PRIOR ID = ID;Edited by: DeepakDevarapalli on Nov 12, 2009 2:45 PM
Edited by: DeepakDevarapalli on Nov 12, 2009 2:46 PM