What is a self join ?

Categories >> Software >> Databases >> SQL PLSQL
Suggest New Category

Question Posted / chacha

6 Answers
11430 Views
BirlaSoft, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What is a self join ?..

Answer / anil_abbireddy

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

Is This Answer Correct ?

12 Yes

0 No

What is a self join ?..

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.

Is This Answer Correct ?

9 Yes

1 No

What is a self join ?..

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'.

Is This Answer Correct ?

7 Yes

1 No

What is a self 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

Is This Answer Correct ?

2 Yes

2 No

What is a self join ?..

Answer / praker

join two members

Is This Answer Correct ?

4 Yes

6 No

What is a self join ?..

Answer / vipin kumar

we are joining more than 2 tables

Is This Answer Correct ?

3 Yes

12 No

Post New Answer