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SQL>
SQL> CREATE TABLE session (
2 department CHAR(3),
3 course NUMBER(3),
4 description VARCHAR2(2000),
5 max_lecturer NUMBER(3),
6 current_lecturer NUMBER(3),
7 num_credits NUMBER(1),
8 room_id NUMBER(5)
9 );
Table created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('HIS', 101, 'History 101', 30, 11, 4, 20000);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('HIS', 301, 'History 301', 30, 0, 4, 20004);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('CS', 101, 'Computer Science 101', 50, 0, 4, 20001);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('ECN', 203, 'Economics 203', 15, 0, 3, 20002);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('CS', 102, 'Computer Science 102', 35, 3, 4, 20003);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('MUS', 410, 'Music 410', 5, 4, 3, 20005);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('ECN', 101, 'Economics 101', 50, 0, 4, 20007);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('NUT', 307, 'Nutrition 307', 20, 2, 4, 20008);
1 row created.
SQL>
SQL> INSERT INTO session(department, course, description, max_lecturer, current_lecturer, num_credits, room_id)
2 VALUES ('MUS', 100, 'Music 100', 100, 0, 3, NULL);
1 row created.
SQL> DECLARE
2 v_SQLQuery VARCHAR2(200);
3 v_Class session%ROWTYPE;
4 v_Description session.description%TYPE;
5 BEGIN
6 v_SQLQuery :=
7 'SELECT description ' ||
8 ' FROM session ' ||
9 ' WHERE department = ''ECN''' ||
10 ' AND course = 203';
11
12 EXECUTE IMMEDIATE v_SQLQuery
13 INTO v_Description;
14
15 DBMS_OUTPUT.PUT_LINE('Fetched ' || v_Description);
16
17 v_SQLQuery :=
18 'SELECT * ' ||
19 ' FROM session ' ||
20 ' WHERE description = :description';
21 EXECUTE IMMEDIATE v_SQLQuery
22 INTO v_Class
23 USING v_Description;
24
25 DBMS_OUTPUT.PUT_LINE(
26 'Fetched ' || v_Class.department || ' ' || v_Class.course);
27
28 v_SQLQuery := 'SELECT * FROM session';
29 EXECUTE IMMEDIATE v_SQLQuery
30 INTO v_Class;
31 END;
32 /
Fetched Economics 203
Fetched ECN 203
DECLARE
*
ERROR at line 1:
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at line 29
SQL>
SQL> drop table session;
Table dropped.
SQL>
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