PLSQL ORACLE 11g GET ALL OBJECT - oracle

Question

i have this json = '[
{
"id": 11,
"title": "1111",
},
{
"id": 22,
"title": "2222",
},
{
"id": 33,
"answer": "3333"
}
]'
I How to get all the object of the array in position 2 (or any)
Result string: '{
"id": 22,
"title": "2222",
}'
Thanks!

Answer 1

You could create your own function like this:
Function get_element(p_json VarChar2, p_which_one Number) Return VarChar2 IS
my_str VarChar2(255) := '';
start_pos Number := 0;
end_pos Number := 0;
Begin
start_pos := InStr(p_json, '{', 1, p_which_one);
end_pos := InStr(p_json, '}', 1, p_which_one) + 1;
my_str := my_str || SubStr(p_json, start_pos, end_pos - start_pos);
Return my_str;
End get_element;
and get the element that you want...
SET SERVEROUTPUT ON
Declare
json_str VarChar2(512) := '[ { "id": 11, "title": "1111", }, { "id": 22, "title": "2222", }, { "id": 33, "answer": "3333" }, { "id": 44, "title": "4444", }, { "id": 55, "title": "5555", }, { "id": 66, "answer": "6666" } ]';
my_str VarChar2(50) := '';
Begin
my_str := get_element(json_str, 2);
DBMS_OUTPUT.PUT_LINE(my_str);
End;
--
-- Result for p_which_one = 2 is
-- { "id": 22, "title": "2222", }
--
-- and for p_which_one = 4
-- { "id": 44, "title": "4444", }
... or you can loop them all...
SET SERVEROUTPUT ON
Declare
json_str VarChar2(512) := '[ { "id": 11, "title": "1111", }, { "id": 22, "title": "2222", }, { "id": 33, "answer": "3333" }, { "id": 44, "title": "4444", }, { "id": 55, "title": "5555", }, { "id": 66, "answer": "6666" } ]';
my_str VarChar2(255) := '';
Begin
For i in 1..100 Loop
if instr(json_str, '{', 1, i) > 0 Then
my_str := get_element(json_str, i);
DBMS_OUTPUT.PUT_LINE(my_str);
else
goto end_it;
end if;
End Loop;
<<end_it>>
null;
End;
/* R e s u l t :
anonymous block completed
{ "id": 11, "title": "1111", }
{ "id": 22, "title": "2222", }
{ "id": 33, "answer": "3333" }
{ "id": 44, "title": "4444", }
{ "id": 55, "title": "5555", }
{ "id": 66, "answer": "6666" }
*/