SQL & PL/SQL :: Getting Output From Multiple Rows Return Only One Row In Oracle?

EMP table

create table emp1 (empno number,deptname varchar2(30),deptno number,sal number);
insert into emp1 values (1,'Bank',10,1000);
insert into emp1 values (1,'Finance',20,400);
insert into emp1 values (2,'Finance',20,4000);
insert into emp1 values (3,'Account',30,3000);
commit;
select * from emp1;

actual output :

empno deptname deptno sal
1 Bank 10 1000
1 Finane 20 400
2 Finane 20 4000
3 Account 30 3000

Expected output :

empno deptname deptno sal
1 Bank 10 1000
2 Finane 20 4000
3 Account 30 3000

I am looking a output like above one. if any empno belongs to deptname Bank then give priority to that values else go to other dept like Finance but empno 1 should return only one row.i.e Bank dept only.

I have to return only one row based on dept values for one empno. how to do in sql or plsql?