eid column is primary jey, you cannot insert duplicates. use a different logic

create table emp_targt

(

eid int ,

name varchar(10),

addr varchar(10))

drop table emp_targt

insert into emp_targt

values(1,'aaa','Mysore')

insert into emp_targt

values(2,'bbb','chennai')

create table emp_details

(

eid int ,

name...