Boolean function issue

Question

SQL> create or replace function my_func
2 return boolean as
3 x boolean;
4 begin
5 x := true;
6 return x;
7 end;
8 /
Function created.
SQL> select my_func from dual;
select my_func from dual
ERROR at line 1:
ORA-06552: PL/SQL: Statement ignored
ORA-06553: PLS-382: expression is of wrong type
SQL>
Above is what I thought was a simple function that returns a boolean value. I am doing a asp.net project and i need a simple function to call as a test. I have written a simple function that returns an int, string already and i dont understand the error above....
Can some one give me an example of a function that returns a boolean value based around a simple table like the emp table for example. That would be great thanks ( or else tell me whats wrong with my simple ha ! function above)

Answer 1

I'd rather put some sort of wrapper on the oracle side. The reason for this is that the application i'm building is designed to allow users run functions or procedures and pass as many arguments as they want to the c# class. This is what I've been working on but there are data type issues arising.
create or replace function convFunc
--funcName varchar2
return number
as
a boolean;
b number;
begin
--a := myFunction();
a:=funcName
--Is there any way I can pass in the name of the function to be called
and concatenate the () brackets to it and assign it to a. I tried
funcName:= funcName||(); but it wont let me do that. The second problem is that as the function returns true or false but the function name comes in as a string there is a type mis match... There has to be some way of solving the problem on the oracle side. Again all I want from the user is the function name and parameters
Sorry if i'm annoying people with similar posts
if a=true then
b:=1;
return 1;
else
b:=0;
return 0;
end if;
end;