Answer / anil_abbireddy

A table is joined itself is called self join or Self
referential integrity.

Answer / rupesh.dbms@gmail.com

It is the join in which result is obtained by equating two
coloumns with same values of one table for example
emp(eno,ename,mgrno) eno is primary key and mgrno is
recursive foreign key

select e.eno,e.ename,m.mgrno,m.ename mgrname
from emp e, emp m
where m.eno=e.mgrno;
note : one table emp is replicated as m , e and then
result is obtained.

Answer / anbu

Self join is defined as a table is viewd by two different
ways and then the join can be done with the same table.
By another way the definition is 'A table can be joined
with itself using sel join'.

Answer / ram

Normally we joins for retrieve data from more than 1 table

In some cases we need to join 1 table itself to join itself
condition is table having two column with same data type &
size but name are different
In emp table empno & mgrno are two columns example for this


select ename,job,sal,e.empno,m.mgrno from emp e inner join
emp m on m.mgrno=e.empno

Answer / praker

join two members

Answer / vipin kumar

we are joining more than 2 tables

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