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Function return issue

2943907May 5 2015 — edited May 6 2015

Hello Gurus,

My requirement is to retrieve through function: if i pass string as parameter, it should return number value. I have tried below one, but it doesn't working.

CREATE OR REPLACE FUNCTION Get_Items_func(ItemName IN varchar(2000))
RETURN NUMBER IS
ItmID number;
BEGIN
SELECT ItemID into ItmID
FROM Items WHERE Item_Name = ItemName;
RETURN (ItmID);
END;

Please help me with this.

Thanks in Advance.

David Berger

Answer

Hello d670...

I would try this code:

DECLARE
  p_studentid   NUMBER;
  v_result      VARCHAR2(20);  
BEGIN  
  p_studentid := 1;

  FOR rec_result IN (SELECT students.firstname
                          , test_history.score
                          , test_id.test_name
                          , test_id.passing_grade  
                       FROM students  
                       JOIN test_history  
                         ON students.STUDENT_ID = test_history.student_id  
                       JOIN test_id  
                         ON test_id.test_id = test_history.test_id  
                      WHERE students.student_id = p_studentid  
                        AND test_history.SCORE < test_id.passing_grade   -->  This row has to be deleted!
                    )
  LOOP
     IF rec_result.score < rec_result.passing_grade 
      THEN v_result := 'Fail';
      ELSE v_result := 'Pass';
     END IF; 

     DBMS_OUTPUT.PUT_LINE (rec_result.firstname || ' ' || TO_CHAR(rec_result.score) || ' ' || rec_result.test_name || ' ' || TO_CHAR(rec_result.passing_grade) || ' ' || 'Result = ' || v_result);    
  END LOOP;  

END;  
/

I hope it helps.

Regards, David

Marked as Answer by 2652078 · Sep 27 2020

Moazzam

However, if the student has passed it just returns 'Result = Pass' and fails to return their name, tests, grade and passing grade.

If you find yourself wanting a function that returns multiple values, you would generally want to either
- create a procedure that has multiple OUT parameters
- create a function that returns an object type that encapsulates the values you want to return

can functions return multiple values?

CREATE OR REPLACE TYPE user_data_type AS OBJECT(val1 NUMBER(15), val2 NUMBER(15));
/

CREATE OR REPLACE FUNCTION GET_EMPLOYEE_AND_USER(in_login IN fnd_user.user_name%TYPE)
  RETURN user_data_type AS

  out_var user_data_type;

  CURSOR buffer_cur IS
   SELECT f.user_id, f.employee_id FROM Fnd_User f WHERE f.user_name = in_login;

BEGIN 
  OPEN buffer_cur;
  FETCH buffer_cur INTO out_var.val1, out_var.val2;

  CLOSE buffer_cur;
  RETURN out_var;
END GET_EMPLOYEE_AND_USER;

plsql - Returning multiple values from PL/SQL function - Stack Overflow

1 person found this helpful

2652078

Hi Folks

Thank you very much for your help. I should have mentioned that i needed to do this in a parameterised cursor. Despite your answers working perfectly, i realised i could just move the DBMS_OUTPUT.PUT_LINE inside the loop and i ended up solving my own problem.

Your code looks much better though!!!

Thanks again

Ben

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