How to use BOOLEAN type in SELECT statement

Question

I have a PL/SQL function with BOOLEAN in parameter:

function get_something(name in varchar2, ignore_notfound in boolean);

This function is

Answer 1

Compile this in your database and start using boolean statements in your querys.

note: the function get's a varchar2 param, so be sure to wrap any "strings" in your statement. It will return 1 for true and 0 for false;

select bool('''abc''<''bfg''') from dual;

CREATE OR REPLACE function bool(p_str in varchar2) return varchar2 
 is
 begin

 execute immediate ' begin if '||P_str||' then
          :v_res :=  1;
       else
          :v_res :=  0;
       end if; end;' using out v_res;

       return v_res;

 exception 
  when others then 
    return '"'||p_str||'" is not a boolean expr.';
 end;
/