Query for Position Hierarchy

Question

Hi friends,
I need urgent help. I have tried that Position Hierarchy query. If i give Bottom position id and Top position id , it should display that particular root only.
This is my query.
SELECT posname, subordinate_position_id, parent_position_id
FROM (
SELECT SYS_CONNECT_BY_PATH (pse.subordinate_position_id, '/') posname,
pse.subordinate_position_id, parent_position_id
FROM (SELECT NAME, position_id
FROM hr_all_positions_f_tl
WHERE LANGUAGE = USERENV ('LANG')) hap,
(SELECT NAME, position_id
FROM hr_all_positions_f_tl
WHERE LANGUAGE = USERENV ('LANG')) has,
per_pos_structure_elements pse
WHERE pse.business_group_id = 0
AND hap.position_id = pse.parent_position_id
AND has.position_id = pse.subordinate_position_id
START WITH pse.parent_position_id = 63--:parent_posid
CONNECT BY PRIOR pse.subordinate_position_id = pse.parent_position_id
AND PRIOR pse.pos_structure_version_id = pse.pos_structure_version_id
WHERE subordinate_position_id = 362--:subposid
Output coming like this :
Posname SUBORDINATE_POSITION_ID                 PARENT_POSITION_ID
/81/55/161/135/188/141/101/362 *362 101*
It returns one row only
i need Like this
subordinate positiond_id Parent_position_id
362 101
101 141
141 188
188 135
135 161
161 55
55 81
81 63.
How to achieve this.. Please help.
Thanks in advance.
Kavi

Answer 1

Try this
SELECT null posname, subordinate_position_id, parent_position_id, level_num
FROM (
SELECT distinct
--SYS_CONNECT_BY_PATH (pse.subordinate_position_id, '/') posname, --uncomment this line if necessary
level level_num,
pse.subordinate_position_id, parent_position_id
FROM (SELECT NAME, position_id
FROM hr_all_positions_f_tl
WHERE LANGUAGE = USERENV ('LANG')) hap,
(SELECT NAME, position_id
FROM hr_all_positions_f_tl
WHERE LANGUAGE = USERENV ('LANG')) has,
per_pos_structure_elements pse
WHERE pse.business_group_id = 0
AND hap.position_id = pse.parent_position_id
AND has.position_id = pse.subordinate_position_id
START WITH pse.parent_position_id = 63--:parent_posid
CONNECT BY PRIOR pse.subordinate_position_id = pse.parent_position_id
AND PRIOR pse.pos_structure_version_id = pse.pos_structure_version_id
WHERE subordinate_position_id = 362--:subposid
order by level_numMake sure that the you are using the correct values for the 3 IDs.
Hope this helps,
Sandeep Gandhi