Question

I am working on a table structure similar to the below and trying to get the output as mentioned.

To acheive this, I written the below PL SQL procedure:

     CREATE OR replace PROCEDURE Sample_procedure
AS
  TYPE list_of_names_t
    IS TABLE OF emp.emp_index%TYPE;
  processedindexes LIST_OF_NAMES_T := List_of_names_t();
  flag             emp.emp_index%TYPE;
  CURSOR c1 IS
    SELECT *
    FROM   emp
    WHERE  Trim(emp_id) = 'AAAAA'
    ORDER  BY last_maint_ts ASC;
BEGIN
    dbms_output.Put('Entered the loop');

    FOR rec IN c1 LOOP
        SELECT emp_index
        INTO   flag
        FROM   emp
        WHERE  emp_id = rec.emp_id
               AND last_maint_ts > rec.last_maint_ts;

        IF flag IS NOT NULL THEN
          processedindexes.extend;

          Processedindexes(processedindexes.last) := flag;

          processedindexes.extend;

          Processedindexes(processedindexes.last) := rec.emp_index;

          dbms_output.Put('The indexes'
                          ||rec.emp_index
                          ||' & '
                          ||flag
                          ||'refer to same emp ID');

          exit;

          dbms_output.Put('received NULL');
        END IF;
    END LOOP;
END;  

1) Everytime, I run this i get the output as Process exited in sql developer, Any suggestion on this?

Note: I am new to PL SQL programming, please correct me if my approach of solving this is not right.

Answer 1

open sqlplus and execute the following :-

set serveroutput on
exec Sample_procedure;

provided your procedure is compiling fine, it should display the output in dbms_output.put