|
SQL> CREATE TABLE emp (
2 id NUMBER PRIMARY KEY,
3 fname VARCHAR2(50),
4 lname VARCHAR2(50)
5 );
Table created.
SQL>
SQL> INSERT INTO emp (id, fname, lname)VALUES (1, 'A', 'B');
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (2, 'C', 'D');
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (3, 'Enn', 'F');
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (4, 'G', 'H');
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (5, 'G', 'Z');
1 row created.
SQL>
SQL> CREATE TABLE books (
2 isbn CHAR(10) PRIMARY KEY,
3 category VARCHAR2(20),
4 title VARCHAR2(100),
5 num_pages NUMBER,
6 price NUMBER,
7 copyright NUMBER(4),
8 emp1 NUMBER,
9 emp2 NUMBER,
10 emp3 NUMBER
11 );
Table created.
SQL>
SQL> INSERT INTO books (isbn, category, title, num_pages, price, copyright, emp1, emp2, emp3)
2 VALUES ('1', 'Database', 'Oracle', 563, 39.99, 2009, 1, 2, 3);
1 row created.
SQL> INSERT INTO books (isbn, category, title, num_pages, price, copyright, emp1, emp2)
2 VALUES ('2', 'Database', 'MySQL', 765, 44.99, 2009, 4, 5);
1 row created.
SQL> INSERT INTO books (isbn, category, title, num_pages, price, copyright, emp1, emp2, emp3)
2 VALUES ('3', 'Database', 'SQL Server', 404, 39.99, 2001, 6, 7, 8);
1 row created.
SQL>
SQL>
SQL> CREATE OR REPLACE PROCEDURE emp_book_count
2 AS
3 fnameValue emp.fname%TYPE;
4 lnameValue emp.lname%TYPE;
5 v_row_count PLS_INTEGER := 0;
6
7 CURSOR auth_cur IS
8 SELECT a.fname, a.lname, count(b.title)
9 FROM emp a, books b
10 WHERE a.id = b.emp1
11 GROUP BY a.fname, a.lname
12 HAVING count(b.title) > 0
13 ORDER BY a.lname;
14
15 BEGIN
16
17 DBMS_OUTPUT.ENABLE(1000000);
18
19 OPEN auth_cur;
20 LOOP
21 FETCH auth_cur INTO fnameValue, lnameValue, v_row_count;
22 EXIT WHEN auth_cur%NOTFOUND;
23
24 DBMS_OUTPUT.PUT_LINE(lnameValue||','||fnameValue||' wrote '||v_row_count||' book(s).');
25 END LOOP;
26
27 CLOSE auth_cur;
28
29 EXCEPTION
30 WHEN OTHERS
31 THEN
32 DBMS_OUTPUT.PUT_LINE(SQLERRM);
33 END;
34 /
Procedure created.
SQL> show errors
No errors.
SQL> drop table books;
Table dropped.
SQL> drop table emp;
Table dropped.
|