Mega Code Archive

Declare variables which will be used in SQL statements

SQL> SQL> CREATE TABLE lecturer ( 2 id NUMBER(5) PRIMARY KEY, 3 first_name VARCHAR2(20), 4 last_name VARCHAR2(20), 5 major VARCHAR2(30), 6 current_credits NUMBER(3) 7 ); Table created. SQL> SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits) 2 VALUES (10001, 'Scott', 'Lawson','Computer Science', 11); 1 row created. SQL> SQL> INSERT INTO lecturer (id, first_name, last_name, major, current_credits) 2 VALUES (10002, 'Mar', 'Wells','History', 4); 1 row created. SQL> SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits) 2 VALUES (10003, 'Jone', 'Bliss','Computer Science', 8); 1 row created. SQL> SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits) 2 VALUES (10004, 'Man', 'Kyte','Economics', 8); 1 row created. SQL> SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits) 2 VALUES (10005, 'Pat', 'Poll','History', 4); 1 row created. SQL> SQL> SQL> SQL> DECLARE 2 v_NewMajor VARCHAR2(10) := 'History'; 3 myFirstName VARCHAR2(10) := 'Scott'; 4 v_LastName VARCHAR2(10) := 'Urman'; 5 BEGIN 6 UPDATE lecturer 7 SET major = v_NewMajor 8 WHERE first_name = myFirstName 9 AND last_name = v_LastName; 10 IF SQL%NOTFOUND THEN 11 INSERT INTO lecturer (ID, first_name, last_name, major) 12 VALUES (10020, myFirstName, v_LastName, v_NewMajor); 13 END IF; 14 END; 15 / PL/SQL procedure successfully completed. SQL> SQL> SQL> drop table lecturer; Table dropped. SQL>