oracle pl sql procedure code example

Example 1: pl/sql procedure

CREATE [OR REPLACE] PROCEDURE procedure_name
    [ (parameter [,parameter]) ]

IS
    [declaration_section]

BEGIN
    executable_section

[EXCEPTION
    exception_section]

END [procedure_name];

Example 2: pl/sql procedure

CREATE OR REPLACE PROCEDURE print_contact(
    in_customer_id NUMBER 
)
IS
  r_contact contacts%ROWTYPE;
BEGIN
  -- get contact based on customer id
  SELECT *
  INTO r_contact
  FROM contacts
  WHERE customer_id = p_customer_id;

  -- print out contact's information
  dbms_output.put_line( r_contact.first_name || ' ' ||
  r_contact.last_name || '<' || r_contact.email ||'>' );

EXCEPTION
   WHEN OTHERS THEN
      dbms_output.put_line( SQLERRM );
END;

Example 3: pl/sql procedure

CREATE OR REPLACE Procedure UpdateCourse
   ( name_in IN varchar2 )

IS
   cnumber number;

   cursor c1 is
   SELECT course_number
    FROM courses_tbl
    WHERE course_name = name_in;

BEGIN

   open c1;
   fetch c1 into cnumber;

   if c1%notfound then
      cnumber := 9999;
   end if;

   INSERT INTO student_courses
   ( course_name,
     course_number )
   VALUES
   ( name_in,
     cnumber );

   commit;

   close c1;

EXCEPTION
WHEN OTHERS THEN
   raise_application_error(-20001,'An error was encountered - '||SQLCODE||' -ERROR- '||SQLERRM);
END;