Facing issue with the query..

Hi,

I have the following data in my single table CHILD_ID PARENT_ID
ASD0l12eds ASD0l12edn
ASD0l58ppo ASD0l16uui
ASD0l17jji ASD0l19nnk
ASD0l12edm ASD0l12edn
ASD0l19dds ASD0l12edn
ASD0l16tdp ASD0l16uui
ASD0l10kko ASD0l16uui


My Requirement :-


I want to fetch all the data i.e. child records based on the
PARENT_ID provided.

putting it in simple words, i want to iterate the table to get all the
child records which are related to that particular PARENT_ID

then

need to hold that ouput in a variable and
put a counter (which will hold total no. of rows accumulated)

then

will delete all the records and will set counter value to 0.



Expected Result :-

CHILD_ID PARENT_ID

ASD0l12eds ASD0l12edn
ASD0l12edm ASD0l12edn
ASD0l19dds ASD0l12edn
ASD0l17jji ASD0l19nnk
ASD0l58ppo ASD0l16uui
ASD0l16tdp ASD0l16uui
ASD0l10kko ASD0l16uui


WHAT I DID :-

I built the below query and ran it:-

SELECT M.CHILD_ID,M.PARENT_ID, CONNECT_BY_ISLEAF AS NO_CHILDREN_EXIST
FROM MY_EX_TABLE M
START WITH PARENT_ID = 'ASD0l16uui'
CONNECT BY PARENT_ID = 'ASD0l16uui' ;

WHAT I GOT (ACTUAL RESULT) :-

CHILD_ID PARENT_ID NO_CHILDREN_EXIST
ASD0l17jji ASD0l19nnk 0
ASD0l17jji ASD0l19nnk 0
ASD0l17jji ASD0l19nnk 0
ASD0l17jji ASD0l19nnk 0
ASD0l17jji ASD0l19nnk 0
ASD0l17jji ASD0l19nnk 0
.
.
.
.
.
ASD0l17jji ASD0l19nnk 0

NOTE:-
NO_CHILDREN_EXIST = 0 WHEN CHILD Record is present
NO_CHILDREN_EXIST = 1 WHEN CHILD Record is not present


EXPECTED RESULT :-

CHILD_ID PARENT_ID NO_CHILDREN_EXIST ASD0l17jji ASD0l19nnk 0


PROBLEM :-

1. As there are 1000 rows in the table.

So, even if there is a single child record the query fetches 1000 rows !!!

The Actual Result != (NOT EQUALS TO) Expected Result

I want the exact child records corresponding to the given parent_id.

No extra rows which i am getting currently by running the above query.

2. Not able to hold the output of query in a variable

i.e.

SELECT M.CHILD_ID,M.PARENT_ID,SUM (COUNT(*)) OVER (PARTITION BY CHILD_ID),

CONNECT_BY_ISLEAF INTO P_CHLD,P_PRNT,P_COUNT, NO_CHILDREN_EXIST
FROM MY_EX_TABLE M
START WITH PARENT_ID = 'ASD0l16uui'
CONNECT BY PARENT_ID = 'ASD0l16uui' GROUP BY CHILD_ID;

The above query fails to execute !!


Plz. help to resolve the above 2 bottlenecks for the mentioned problem.

Thnks