Oracle Apex: Conditional List of values with concat

Question

I am trying to build dynamic and conditional LOV on condition taken from the page item. I came across this example ...

IF :P123_CHOICE = 'EMP' THEN
  RETURN
  'SELECT ename d, empno r
   FROM emp';
ELSE
  RETURN
  'SELECT dname d, deptno r
   FROM dept';
END IF;

However I need something little bit more complicated:

IF :P123_CHOICE = 'EMP' THEN
  RETURN
  'SELECT ename||' : '||esurname d, empno r
   FROM emp
   WHERE (admin ='N' or ADMIN = 'Y')
   ';
ELSE
  RETURN

  'SELECT ename||' : '||esurname d, empno r
   FROM emp
   WHERE admin ='N'
   ';
END IF;

As a result I get errors:

*ORA-06550: line 3, column 21: PL/SQL: ORA-01756: quoted string not properly terminated ORA-01756: quoted string not properly terminated ORA-06550: line 1, column 13: PL/SQL: SQL Statement ignored ORA-06550: line 5, column 4: PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following: ; ORA-01756: quoted string not properly terminated*

It is clearly formatting issue I cannot solve. Any help greatly appreciated.

Answer 1

In order to bypass special characters:

IF :P123_CHOICE = 'EMP' THEN
RETURN
      q'[select ... ]';
ELSE
RETURN
      q'[ select ...]';
END IF;

Oracle® Database PL/SQL Language Reference 11g Release 1 (11.1)