Help on group by statement

Question

I have a table with four columns. I want to select rows if the status is different and the firstname and lastname are same. How do I achieve this.
For ex: select firstname,lastname,status,sum(amt)
from table a
group by 1,2,3
Thank you,

Answer 1

Hi,
create table test
(firstname varchar2(20),
lastname varchar2(20),
status char(1),
salary number
insert into test values('John','Boughr','1','100');
insert into test values('John','Boughr','0','200');
insert into test values('doug','smiti','1','300');
insert into test values('doug','smiti','0','400');
insert into test values('aaa','Boughr','1','100');
insert into test values('aaa','Boughr','1','100');
insert into test values('bbbb','Boughr','1','100');
select a.firstname,a.lastname, sum(a.salary)
from test a
where a.firstname||a.lastname
in (select b.firstname||b.lastname
from test b
where a.status <> b.status
group by a.firstname,a.lastname
having count(*) > 1
FIRSTNAME LASTNAME SUM(A.SALARY)
John Boughr 300
doug smiti 700
SQL>