Oracle sql query to convert common rows to columns - oracle

Question

I had a requirement to build a survey like application. Did this using Oracle APEX 18.2. I'm done designing the table structures and their relationships. I'm now on the part where I need to build a report (can be Interactive Report/Classic Report) where the columns will depend on what questions are available.
So basically, each question is supposed to have a column in the report. I can build the report and add these questions as column on design time. But I was wondering if there is a way to do this at runtime as well? More questions can be added in the future and I would like to report to be flexible enough to accommodate this. For now I would like to try via SQL statement.
Here's my table design for refence.
create table persons (
id number primary key
, name varchar2(100) not null
)
/
insert into persons values ( 1, 'Bruce' )
/
insert into persons values ( 2, 'Jennifer' )
/
create table questions (
id number primary key
, question varchar2(100) not null
)
/
insert into questions values ( 1, 'Gender' )
/
insert into questions values ( 2, 'Currently Employed' )
/
create table choices (
id number primary key
, choice varchar2(100) not null
)
/
insert into choices values ( 1, 'Male' )
/
insert into choices values ( 2, 'Female' )
/
insert into choices values ( 3, 'Yes' )
/
insert into choices values ( 4, 'No' )
/
create table question_choices (
id number primary key
, question_id number
, choice_id number
)
/
insert into question_choices values ( 1, 1, 1 )
/
insert into question_choices values ( 2, 1, 2 )
/
insert into question_choices values ( 3, 2, 3 )
/
insert into question_choices values ( 4, 2, 4 )
/
create table survey (
id number primary key
, name varchar2(100) not null
)
/
insert into survey values ( 1, 'Survey 1' )
/
create table survey_questions (
id number primary key
, survey_id number
, question_id number
)
/
insert into survey_questions values ( 1, 1, 1 )
/
insert into survey_questions values ( 2, 1, 2 )
/
create table survey_responses (
id number primary key
, survey_id number
, person_id number
, question_id number
, choice_id number
)
/
insert into survey_responses values ( 1, 1, 1, 1, 1 )
/
insert into survey_responses values ( 2, 1, 1, 2, 4 )
/
insert into survey_responses values ( 3, 1, 2, 1, 2 )
/
insert into survey_responses values ( 4, 1, 2, 2, 3 )
/
commit
/
I did a bit or research and found out about the pivot command. However, this approach also requires that the columns be defined at design time.
select *
from (
select s.name survey
, p.name respondent
, q.question
, c.choice
, row_number() over (partition by person_id, question order by choice ) rn
from persons p
, questions q
, choices c
, question_choices qc
, survey s
, survey_questions sq
, survey_responses sr
where p.id = sr.person_id
and q.id = sr.question_id
and c.id = qc.choice_id
and s.id = sq.survey_id
and sq.question_id = q.id
and sr.choice_id = c.id
)
pivot (max(question) question, max(choice) for question in ( 'Gender','Currently Employed' ))
Appreciate any comments/suggestions.