Select List value as Query variable

Question

Hi, l have a Select List and l need to put its return value inside a query to define a column.
Select List items are "name" and "id" and l would that when l select "name" the query is:
SELECT ...
FROM ...
WHERE "TAB1"."NAME" = :VAR;
and when l select "id" the query is:
SELECT ...
FROM ...
WHERE "TAB1"."ID" = :VAR;
Is it possible to do that ??? In which way ???
(it's several hours I'm trying but without positive solution)
THANKS

Answer 1

Assuming there is no correlation between name and id you could have just one item say P1_SEARCH and use it like this
select ...
from tab1
where upper(name) = upper('%'||:P1_SEARCH||'%')
or id = :P1_SEARCH
That also has wildcard and is case insensitive. so if you entered smit in the search box you would find Smith or SMIT etc. The id must be an exact match.
Do try the original idea you could try creating a SQL region on a function returning a query.
declare
v_sql varchar2(1000) := '';
begin
v_sql := 'select * from tab1 ';
if v('P1_SELECT_LIST') = 'ID' then
v_sql := v_sql || where id = '|| v('VAR');
else
v_sql := v_sql || where name = '|| =v('VAR');
end if;
return v_sql;
end;