Hierarchy tree in oracle forms problem

Question

Hello Experts,
                     I am new in oracle forms.I am using oracle forms 11g with weblogic server 10.3.5 at windows 7.I have two table as tbl_country and tbl_state.I have to make a hierarchy tree in oracle forms.My table structure as:
tbl_country
CREATE TABLE "SCOTT"."TBL_COUNTRY"
   (    "CNTRY_CODE" NUMBER NOT NULL ENABLE,
    "NAME" VARCHAR2(80 BYTE),
     CONSTRAINT "TBL_COUNTRY_PK" PRIMARY KEY ("CNTRY_CODE")  
tbl_state:
CREATE TABLE "SCOTT"."TBL_STATE"
   (    "SATE_CODE" NUMBER NOT NULL ENABLE,
    "COUNTRY_CODE" NUMBER NOT NULL ENABLE,
    "STATE_NM" VARCHAR2(80 BYTE),
     CONSTRAINT "TBL_STATE_PK" PRIMARY KEY ("SATE_CODE")
     CONSTRAINT "FK_CNTRY_STATE" FOREIGN KEY ("COUNTRY_CODE")
Table Date as:
insert into tbl_COUNTRY values(0,'country ');
insert into tbl_COUNTRY values(91,'HHH');
insert into tbl_COUNTRY values(72,'III');
insert into tbl_COUNTRY values(83,'JJJ');
insert into tbl_state values(1,'state',0);
insert into tbl_state values(2,'BH',91);
insert into tbl_state values(3,'CI',72);
insert into tbl_state values(4,'DI',72);
insert into tbl_state values(5,'EH',91);
insert into tbl_state values(6,'FI',72);
insert into tbl_state values(7,'GJ',83);
insert into tbl_state values(8,'HJ',83);
insert into tbl_state values(9,'IH',91);
Desired Output in oracle forms tree:
|__Country
         |____HHH
                   |____BH
                   |____EH
                   |____IH
         |____III
                  |__CI
                  |__DI
                  |__FI
         |____JJJ
                   |__GJ
                   |__HJ
I Have tried but got no output
select
1 ,level, esm.name,NULL,to_char(esm.CNTRY_CODE)
from   (SELECT c.name,c.cntry_code from TBL_COUNTRY c union all select s.STATE_NM,s.COUNTRY_CODE from tbl_state s) esm
connect by prior esm.CNTRY_CODE = esm.CNTRY_CODE
start   with esm.code=0
what is going wrong here.
thank you
regards
aaditya

Answer 1

If you have never worked with a Forms Tree control, I recommend you look at this tutorial: How To Create a Hierachical Tree form.
Craig...