Help converting MS SQL to Oracle

Question

Can someone help me to translate this query from MS SQL to Oracle?
WITH GetProjectRootTree(ID, FolderName, PathName)
AS(
--Find the root record
SELECT DISTINCT
L.OBJECT_ID1
,P.CN_DESCRIPTION + ' ' + P.CN_PROJECT_ID
,CAST(P.CN_DESCRIPTION + ' ' + P.CN_PROJECT_ID AS NVARCHAR(MAX))
FROM TDM_LINKS_00001 AS L
INNER JOIN TN_PROJECT AS P ON L.OBJECT_ID1 = P.OBJECT_ID
WHERE P.CN_NOTES LIKE '1st%'
UNION ALL
--Create parent/child menu
SELECT
child.OBJECT_ID2
,P.CN_DESCRIPTION + ' ' + P.CN_PROJECT_ID
,parent.PathName + ' > ' + P.CN_DESCRIPTION + ' ' + P.CN_PROJECT_ID
FROM TDM_LINKS_00001 AS child
INNER JOIN GetProjectRootTree AS parent ON child.OBJECT_ID1 = parent.ID
INNER JOIN TN_PROJECT AS P ON child.OBJECT_ID2 = P.OBJECT_ID
--Get Result
SELECT *
FROM GetProjectRootTree
ORDER BY PathName
This is as recursive function retrieves a hierarchical tree structure like this:
Id | FolderName | PathName
62757 |     Architectural|     Architectural
85353 |     A10 |     Architectural > A10
85358 |     A10-S |     Architectural > A10 > A10-S
85359 |     A10-S350     | Architectural > A10 > A10-S > A10-S350
85360 |     A10-S440 |     Architectural > A10 > A10-S > A10-S440
85270 |     A20 |     Architectural > A20
85290 |     A20-P |     Architectural > A20 > A20-P
85302 |     A20-P100 |     Architectural > A20 > A20-P > A20-P100
c",) Geir
Edited by: user12996295 on Aug 2, 2010 10:01 PM

Answer 1

check this out...
WITH temp AS
  ( SELECT DISTINCT L.OBJECT_ID1 FROM TDM_LINKS_00001 L INNER JOIN TN_PROJECT P ON L.OBJECT_ID1 = P.OBJECT_ID WHERE P.CN_NOTES LIKE '1st%'
SELECT OBJECT_ID   ,CN_PROJECT_ID path, CN_PROJECT_ID folder FROM tn_project WHERE object_id IN (SELECT * FROM temp)
UNION ALL
SELECT t.OBJECT_ID1, p.cn_project_id||path path,t.CN_PROJECT_ID  FROM
  (SELECT L.OBJECT_ID1,connect_by_root L.object_id1 parent,sys_connect_by_path(P.CN_PROJECT_ID,'>') path,P.CN_PROJECT_ID
  FROM TDM_LINKS_00001 L,tn_project P WHERE l.object_id2       = p.object_id
  CONNECT BY L.object_id1  = prior L.object_id2
    START WITH L.object_id1 IN (SELECT * FROM temp)
  ) t,
  tn_project p
  WHERE t.parent = p.object_id
ORDER BY 2,3Ravi Kumar