Answer Posted / j.jyothy

Already i explained 3 joins now i tell u Outerjoins.
leftouterjoin:It will display all the rows of left table
irrespective of whether there is a match in the right or
not.If there is no match in the right table then the null
row is aasumed and it is displayed in the output.

Display all emps in the emptable.
select empno,ename,esal,e.deptno,d.deptno,dname,loc from
emp e left outerjoin dept d on e.deptno=d.deptno

RightOuterJoin:It will display all the rows of right table
irrespective of whether there is a match in the right or
not.If there is no match in the Left table then the null
row is aasumed and it is displayed in the output

Example
select empno,ename,esal,e.deptno,d.deptno,dname,loc from
emp e right outerjoin dept d on e.deptno=d.deptno

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