An Example of a Left Outer Join 2 : Outer Joins Left Right « Table Joins « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Table Joins » Outer Joins Left Right 
7.4.4.An Example of a Left Outer Join 2
SQL>
SQL>
SQL>
SQL>
SQL> -- create demo table
SQL> create table Employee(
  2    EMPNO         NUMBER(3),
  3    ENAME         VARCHAR2(15 BYTE),
  4    HIREDATE      DATE,
  5    ORIG_SALARY   NUMBER(6),
  6    CURR_SALARY   NUMBER(6),
  7    REGION        VARCHAR2(BYTE)
  8  )
  9  /

Table created.

SQL>
SQL> create table job (
  2    EMPNO         NUMBER(3),
  3    jobtitle      VARCHAR2(20 BYTE)
  4  )
  5  /

Table created.

SQL>
SQL> insert into job (EMPNO, Jobtitlevalues (1,'Tester');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (2,'Accountant');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (3,'Developer');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (4,'COder');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (5,'Director');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (6,'Mediator');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (7,'Proffessor');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (8,'Programmer');

row created.

SQL> insert into job (EMPNO, Jobtitlevalues (9,'Developer');

row created.

SQL>
SQL>
SQL> -- prepare data
SQL> insert into Employee(EMPNO,  EName,   HIREDATE,                       ORIG_SALARY,       CURR_SALARY,  REGION)
  2               values (1,      'Jason', to_date('19960725','YYYYMMDD'), 1234,              8767,         'E')
  3  /

row created.

SQL> insert into Employee(EMPNO,  EName,   HIREDATE,                       ORIG_SALARY,       CURR_SALARY,  REGION)
  2               values (2,      'John',  to_date('19970715','YYYYMMDD'), 2341,              3456,         'W')
  3  /

row created.

SQL> insert into Employee(EMPNO,  EName,   HIREDATE,                       ORIG_SALARY,       CURR_SALARY,  REGION)
  2               values (3,      'Joe',   to_date('19860125','YYYYMMDD'), 4321,              5654,         'E')
  3  /

row created.

SQL> insert into Employee(EMPNO,  EName,   HIREDATE,                       ORIG_SALARY,       CURR_SALARY,  REGION)
  2               values (9,      'Jack',  to_date('20010829','YYYYMMDD'), 7896,              1232,         'E')
  3  /

row created.

SQL>
SQL>
SQL>
SQL> -- display data in the table
SQL> select from Employee
  2  /

     EMPNO ENAME           HIREDATE  ORIG_SALARY CURR_SALARY R
---------- --------------- --------- ----------- ----------- -
         Jason           25-JUL-96        1234        8767 E
         John            15-JUL-97        2341        3456 W
         Joe             25-JAN-86        4321        5654 E
         Jack            29-AUG-01        7896        1232 E

SQL> select from job
  2  /

     EMPNO JOBTITLE
---------- --------------------
         Tester
         Accountant
         Developer
         COder
         Director
         Mediator
         Proffessor
         Programmer
         Developer

rows selected.

SQL>
SQL>
SQL> SELECT e.ename, j.jobtitle FROM employee e, job j WHERE e.empno = j.empno (+);

ENAME           JOBTITLE
--------------- --------------------
Jason           Tester
John            Accountant
Joe             Developer
Jack            Developer

SQL>
SQL>
SQL> -- clean the table
SQL> drop table Employee
  2  /

Table dropped.

SQL> drop table job
  2  /

Table dropped.

SQL>
7.4.Outer Joins Left Right
7.4.1.Understanding Outer Joins
7.4.2.Left and Right Outer Joins
7.4.3.An Example of a Left Outer Join 1
7.4.4.An Example of a Left Outer Join 2
7.4.5.An Example of a Right Outer Join 1
7.4.6.An Example of a Right Outer Join 2
7.4.7.Perform outer joins in combination with self joins, employee and job tables
7.4.8.Example outer join with (+)
7.4.9.Right outer join with using statement
7.4.10.Right outer join with group by
7.4.11.LEFT OUTER JOIN tableName ON joined columns
7.4.12.LEFT OUTER JOIN vs RIGHT OUTER JOIN
7.4.13.Left Outer Join
7.4.14.Right Outer Join
7.4.15.Right Outer Join(room vs class)
7.4.16.Right join with where in clause
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