|
SQL>
SQL> create table course_schedule
2 ( course VARCHAR2(6)
3 , begindate DATE
4 , trainer NUMBER(4)
5 , location VARCHAR2(20)) ;
Table created.
SQL>
SQL>
SQL> insert into course_schedule values ('SQL',date '1999-04-12',1,'VANCOUVER' );
1 row created.
SQL> insert into course_schedule values ('OAU',date '1999-08-10',2,'CHICAGO');
1 row created.
SQL> insert into course_schedule values ('SQL',date '1999-10-04',3,'SEATTLE');
1 row created.
SQL> insert into course_schedule values ('SQL',date '1999-12-13',4,'DALLAS' );
1 row created.
SQL> insert into course_schedule values ('JAV',date '1999-12-13',5,'SEATTLE');
1 row created.
SQL> insert into course_schedule values ('XML',date '2000-02-03',6,'VANCOUVER' );
1 row created.
SQL> insert into course_schedule values ('JAV',date '2000-02-01',7,'DALLAS' );
1 row created.
SQL> insert into course_schedule values ('PLS',date '2000-09-11',8,'VANCOUVER' );
1 row created.
SQL> insert into course_schedule values ('XML',date '2000-09-18',NULL,'SEATTLE');
1 row created.
SQL> insert into course_schedule values ('OAU',date '2000-09-27',9,'DALLAS' );
1 row created.
SQL> insert into course_schedule values ('ERM',date '2001-01-15',10, NULL );
1 row created.
SQL> insert into course_schedule values ('PRO',date '2001-02-19',NULL,'VANCOUVER' );
1 row created.
SQL> insert into course_schedule values ('RSD',date '2001-02-24',8,'CHICAGO');
1 row created.
SQL>
SQL> create table employees(
2 empno NUMBER(4)
3 , ename VARCHAR2(8)
4 , init VARCHAR2(5)
5 , job VARCHAR2(8)
6 , mgr NUMBER(4)
7 , bdate DATE
8 , msal NUMBER(6,2)
9 , comm NUMBER(6,2)
10 , deptno NUMBER(2) ) ;
Table created.
SQL>
SQL>
SQL> insert into employees values(1,'Jason', 'N', 'TRAINER', 2, date '1965-12-18', 800 , NULL, 10);
1 row created.
SQL> insert into employees values(2,'Jerry', 'J', 'SALESREP',3, date '1966-11-19', 1600, 300, 10);
1 row created.
SQL> insert into employees values(3,'Jord', 'T' , 'SALESREP',4, date '1967-10-21', 1700, 500, 20);
1 row created.
SQL> insert into employees values(4,'Mary', 'J', 'MANAGER', 5, date '1968-09-22', 1800, NULL, 20);
1 row created.
SQL> insert into employees values(5,'Joe', 'P', 'SALESREP',6, date '1969-08-23', 1900, 1400, 30);
1 row created.
SQL> insert into employees values(6,'Black', 'R', 'MANAGER', 7, date '1970-07-24', 2000, NULL, 30);
1 row created.
SQL> insert into employees values(7,'Red', 'A', 'MANAGER', 8, date '1971-06-25', 2100, NULL, 40);
1 row created.
SQL> insert into employees values(8,'White', 'S', 'TRAINER', 9, date '1972-05-26', 2200, NULL, 40);
1 row created.
SQL> insert into employees values(9,'Yellow', 'C', 'DIRECTOR',10, date '1973-04-27', 2300, NULL, 20);
1 row created.
SQL> insert into employees values(10,'Pink', 'J', 'SALESREP',null,date '1974-03-28', 2400, 0, 30);
1 row created.
SQL>
SQL>
SQL>
SQL> select e.*
2 from employees e
3 where exists (select o.*
4 from course_schedule o
5 where o.course = 'SQL'
6 and o.trainer = e.empno);
EMPNO ENAME INIT JOB MGR BDATE MSAL COMM DEPTNO
---------- -------- ----- -------- ---------- --------- ---------- ---------- ----------
1 Jason N TRAINER 2 18-DEC-65 800 10
3 Jord T SALESREP 4 21-OCT-67 1700 500 20
4 Mary J MANAGER 5 22-SEP-68 1800 20
SQL>
SQL> drop table employees;
Table dropped.
SQL>
SQL> drop table course_schedule;
Table dropped.
SQL>
|