Right outer join with group by : Outer Joins Left Right « Table Joins « Oracle PL/SQL Tutorial






  1. Oracle PL/SQL Tutorial
  2. Table Joins
  3. Outer Joins Left Right
SQL>
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> create table departments
  2  ( deptno NUMBER(2)
  3  , dname  VARCHAR2(10)
  4  , location VARCHAR2(20)
  5  , mgr    NUMBER(4)
  6  ) ;

Table created.

SQL>
SQL> insert into departments values (10,'ACCOUNTING','NEW YORK' ,  2);

1 row created.

SQL> insert into departments values (20,'TRAINING',  'VANCOUVER',  3);

1 row created.

SQL> insert into departments values (30,'SALES',     'CHICAGO',    4);

1 row created.

SQL> insert into departments values (40,'HR',        'BOSTON',     5);

1 row created.

SQL>
SQL>
SQL> select deptno, count(*)
  2  from   employees e
  3         right outer join
  4         departments d
  5         using (deptno)
  6  group  by deptno;

    DEPTNO   COUNT(*)
---------- ----------
        30          3
        20          3
        40          2
        10          2

SQL>
SQL> drop table employees;

Table dropped.

SQL>
SQL> drop table departments;

Table dropped.

SQL>
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