Two Table Equi-Joins(join on) : Equijoins « Table Joins « Oracle PL / SQL

1. Oracle PL / SQL
2. Table Joins
3. Equijoins

Two Table Equi-Joins(join on)

   
SQL>
SQL>
SQL> CREATE TABLE Class (
  2     ClassID     INT NOT NULL PRIMARY KEY,
  3     CourseID    INT NOT NULL,
  4     InstructorID INT NOT NULL,
  5     RoomID      INT NOT NULL,
  6     Time        VARCHAR(50));

Table created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (1,1,1,6,'Mon 09:00-11:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (2,2,1,5,'Mon 11:00-12:00, Thu 09:00-11:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (3,3,2,3,'Mon 14:00-16:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (4,4,3,2,'Tue 10:00-12:00, Thu 14:00-15:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (5,5,2,9,'Tue 14:00-16:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (6,6,3,2,'Tue 16:00-17:00, Thu 15:00-17:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (7,7,4,3,'Wed 09:00-11:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (8,8,5,8,'Wed 11:00-13:00, Fri 09:00-11:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (9,9,1,5,'Fri 11:00-13:00');

1 row created.

SQL> INSERT INTO Class (ClassID,CourseID,InstructorID,RoomID,Time) VALUES (10,10,6,9,'Fri 14:00-16:00');

1 row created.

SQL>
SQL> CREATE TABLE Room (
  2     RoomID   INT NOT NULL PRIMARY KEY,
  3     Comments VARCHAR(50),
  4     Capacity INT);

SQL>
SQL>
SQL> SELECT Class.ClassID, Class.Time, Room.RoomID
  2  FROM Room
  3     JOIN Class ON Room.RoomID = Class.RoomID;

   CLASSID TIME                                                   ROOMID
---------- -------------------------------------------------- ----------
         1 Mon 09:00-11:00                                             6
         2 Mon 11:00-12:00, Thu 09:00-11:00                            5
         3 Mon 14:00-16:00                                             3
         4 Tue 10:00-12:00, Thu 14:00-15:00                            2
         5 Tue 14:00-16:00                                             9
         6 Tue 16:00-17:00, Thu 15:00-17:00                            2
         7 Wed 09:00-11:00                                             3
         8 Wed 11:00-13:00, Fri 09:00-11:00                            8
         9 Fri 11:00-13:00                                             5
        10 Fri 14:00-16:00                                             9

10 rows selected.

SQL>
SQL> drop table class;

Table dropped.

SQL> drop table room;

Table dropped.

   
    
    
  

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