How to fix this error?

jdev1

So it means that in_dep_id is valid?

Alex Nuijten

The procedure doesn't have any DBMS_OUTPUT in it (anymore) so there will not be any output in the DBMS output buffer.

There are two possible errors:

1) when you pass a NULL

2) when the department doesn't exist.

When you pass in 50, the procedure will complete successfully without exceptions.

If you put a DBMS_OUTPUT after the select count(*), like

sys.dbms_output.put_line ('Count: '||to_char (l_count));

you will see something in the DBMS output buffer (if switched on, of course)

jdev1

Ok, thanks I added dbms.. output and saw the output. Now I have another issue similar to departments. Whenever I test code

create or replace procedure triangles(a in out number, b in out number, c in out number) is
 ex_invalid_id exception;
begin
  
if c is null and a is not null and b is not null then
 
 c:=sqrt((b**2)+(a**2));
  
elsif b is null and a is not null and c is not null then

 b:=sqrt((c**2)-(a**2));

elsif a is null and b is not null and c is not null then

 a:= sqrt((c**2)-(b**2));
  
else 
 RAISE ex_invalid_id;
 ---raise_application_error(-20000,'Undefined triangle');

end if;

EXCEPTION 
  WHEN ex_invalid_id THEN 
   dbms_output.put_line('ORA-20000: Undefined triangle');


end triangles;

After testing I am getting this error:

DESCRP: Consider right triangle with legs A and B and hypotenuse C. Create a procedure with parameters A, B and C for

calculating length of one of the triangle sides. When calling the procedure any two parameters should contain values

while the third one should be NULL. The procedure should calculate the missing length and return it via the

respective parameter-A, B or C – the one which initially was NULL. If more than one parameter is passed as NULL

the procedure should raise an error: ORA-20000: Undefined triangle

Hint: Pythagorean theorem: a2+b2=c

2

RogerT

So as those parameters are of type in/out you need to provide variables where the result of the procedure can be stored in instead of passing literals.

declare
   l_variableA number := 5;
...
begin
   triangles (a => l_variableA, ...);
   sys.dbms_output.put_line('A : ' || to_char(l_variableA));
   ...
end;

and please ... do not open one thread to ask x questions ...

Alex Nuijten

... isn't it time to close this thread and start a new one?

jdev1

Thanks

mathguy

@User_MJI7G

Did you change the subject?

I see there are 30 more replies or so, after my last one. I thought you were close to an answer already. Now I see a lot of new replies and code that seem to have absolutely nothing to do with your original question.

If that is indeed so, then please read again the "rules of the game". If you have a different question, don't post it in a thread that was about something else - start a different thread.

jdev1

Ok I see, thanks, I try follow the rules.

jdev1

I have checked above code and I always getting : raise_application_error(-20001,'Null parameter is passed.')?