Question

CREATE OR REPLACE PROCEDURE ABC ( REG_NO   IN  CO_ENROLMENT.S_REGNO%TYPE,
                                  TERM     IN  COURSEOFFERING.CO_TERMNUMBER%TYPE,
                                  YEAR     IN  COURSEOFFERING.CO_YEAR%TYPE,
                                  CO_TITLE IN  COURSE.C_TITLE%TYPE,
                                  EN_DATE  OUT CO_ENROLMENT.COE_ENROLDATE%TYPE,
                                  COM_ST   OUT CO_ENROLMENT.COE_COMPLETIONSTATUS%TYPE)

AS 
BEGIN
   SELECT M.COE_COMPLETIONSTATUS, M.COE_ENROLDATE 
     INTO COM_ST, EN_DATE
     FROM COURSEOFFERING O
    INNER JOIN COURSE C
            ON C.C_ID = O.C_ID
    INNER JOIN CO_ENROLMENT M
            ON M.CO_ID = O.CO_ID
    WHERE M.S_REGNO LIKE REG_NO AND
          O.CO_TERMNUMBER LIKE TERM AND
          O.CO_YEAR LIKE YEAR AND
          C.C_TITLE LIKE CO_TITLE;
END ABC;

I have written down above procedure.
Below is PL/SQL block to call above procedure,

DECLARE
  COMPL_STATUS   CO_ENROLMENT.COE_COMPLETIONSTATUS%TYPE;
  ENROL_DATE     CO_ENROLMENT.COE_ENROLDATE%TYPE;
BEGIN
  ABC (44444444, 2009, 2, 'PLSQL Programming', 
       EN_DATE => enrol_date, COM_ST =>compl_status);
  DBMS_OUTPUT.PUT_LINE ('STUDENT COMPLETION STATUS AND ENROLMENT DATE IS ' 
                         || ENROL_DATE
                         || '    ' 
                         || compl_status );
END;

It returns me error as no data found, but when I run query separately I get the output. I couldn’t figure out what is wrong. Did I wrote procedure block correctly and Parameters passed in PL/SQL block are correct?

Answer 1

You’re calling your stored procedure incorrectly. You have to specify parameters in the correct order, or use named parameter notation, ie

ABC (44444444, 2, 2009, 'PLSQL Programming', enrol_date, compl_status);

or

ABC (REG_NO => 44444444, YEAR => 2009, TERM => 2,
   CO_TITLE => 'PLSQL Programming', 
   EN_DATE => enrol_date, COM_ST =>compl_status);

You can see that if you use named parameter notation you can specify parameters in a different order (or not at all if the parameters have DEFAULT values).