|
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>
|