Sorting connect by

Question

Hi,
I have a table with following columns and values:
DIS_PARENT_OID OID CREATION_TIME LEVEL
0 26750 08/02/2001 14.52.14 1
0 26751 08/02/2001 14.52.48 1
26751 26752 08/02/2001 14.53.39 2
0 26753 08/02/2001 14.53.54 1
0 26722 08/02/2001 13.58.04 1
26722 26723 08/02/2001 13.58.16 2
26723 26724 08/02/2001 13.58.29 3
26724 26725 08/02/2001 13.58.41 4
26725 26726 08/02/2001 13.58.54 5
26726 26727 08/02/2001 13.59.05 6
26727 26728 08/02/2001 13.59.15 7
26728 26729 08/02/2001 13.59.26 8
26729 26730 08/02/2001 13.59.40 9
26730 26731 08/02/2001 13.59.51 10
26731 26732 08/02/2001 14.00.05 11
26732 26733 08/02/2001 14.00.16 12
26733 26734 08/02/2001 14.00.26 13
26734 26735 08/02/2001 14.00.37 14
26735 26736 08/02/2001 14.00.48 15
26736 26737 08/02/2001 14.01.00 16
26737 26738 08/02/2001 14.01.19 17
And I used a query to fetch this tree structure like :
SELECT PRIOR PARENTID,ID,CREATION_TIME,LEVEL
FROM FORUM
START WITH PARENTID=0
CONNECT BY PRIOR OID=PARENTID;
Result:
DIS_PARENT_OID OID CREATION_TIME LEVEL
0 26722 08/02/2001 13.58.04 1
26722 26723 08/02/2001 13.58.16 2
26723 26724 08/02/2001 13.58.29 3
26724 26725 08/02/2001 13.58.41 4
26725 26726 08/02/2001 13.58.54 5
26726 26727 08/02/2001 13.59.05 6
26727 26728 08/02/2001 13.59.15 7
26728 26729 08/02/2001 13.59.26 8
26729 26730 08/02/2001 13.59.40 9
26730 26731 08/02/2001 13.59.51 10
26731 26732 08/02/2001 14.00.05 11
26732 26733 08/02/2001 14.00.16 12
26733 26734 08/02/2001 14.00.26 13
26734 26735 08/02/2001 14.00.37 14
26735 26736 08/02/2001 14.00.48 15
26736 26737 08/02/2001 14.01.00 16
26737 26738 08/02/2001 14.01.19 17
0 26750 08/02/2001 14.52.14 1
0 26751 08/02/2001 14.52.48 1
26751 26752 08/02/2001 14.53.39 2
0 26753 08/02/2001 14.53.54 1
It fetches the rows in tree structure, but i need them order by creation_time desc with group by the tree structure (the level structure need not be sorted - only the latest message should be on top ). But if I used the order by creation_time desc this qry fetches the rows in reverse tree structure.
The query should fetch the rows
ORDER BY creation_time DESC and GROUPED BY tree.
Expected Result:
DIS_PARENT_OID OID CREATION_TIME LEVEL
0 26753 08/02/2001 14.53.54 1
26751 26752 08/02/2001 14.53.39 2
0 26751 08/02/2001 14.52.48 1
0 26750 08/02/2001 14.52.14 1
0 26722 08/02/2001 13.58.04 1
26722 26723 08/02/2001 13.58.16 2
26723 26724 08/02/2001 13.58.29 3
26724 26725 08/02/2001 13.58.41 4
26725 26726 08/02/2001 13.58.54 5
26726 26727 08/02/2001 13.59.05 6
26727 26728 08/02/2001 13.59.15 7
26728 26729 08/02/2001 13.59.26 8
26729 26730 08/02/2001 13.59.40 9
26730 26731 08/02/2001 13.59.51 10
26731 26732 08/02/2001 14.00.05 11
26732 26733 08/02/2001 14.00.16 12
26733 26734 08/02/2001 14.00.26 13
26734 26735 08/02/2001 14.00.37 14
26735 26736 08/02/2001 14.00.48 15
26736 26737 08/02/2001 14.01.00 16
26737 26738 08/02/2001 14.01.19 17
Any help will be appreciated.
thanks,
Satheesh
null

Answer 1

ok, so I took what you provided and modified it a bit to read:
SELECT PADDING d, ORG_ID r
  FROM (SELECT ORG_ID,
            ORG_NM,
            MNG_ORG_ID,
            LEVEL,
            SYS_CONNECT_BY_PATH(ORG_ID, '.') || ORG_NM "Path",
            LPAD (ORG_NM, 2 * (LEVEL-1), '..') PADDING
          FROM ORG_ENTITIES
         WHERE LEVEL > 2 START WITH ORG_ID = 999
         CONNECT BY PRIOR ORG_ID = MNG_ORG_ID
         ORDER BY 5) XXX;The sorting is great, but the LPAD is truncating the name column to six characters... Not quite what I had in mind. I am trying for something like:
HQ
..Division 1
....Location 1
....Location 2
....Location 3
..Division 2
....Location 4
....Location 6
..Division 3
....Location 7
....Location 5
etc.
I know it is the LPAD that is causing the truncation issue. Is there something I can use as a substitute so it shows the entire name with the LEVEL-appropriate indent?