Swapping the values .. please help

Question

Hi,
I have a table called emp_sal_details, in which I do have empno, ename, curr_sal (current month salary), prev_sal (previous month salary) as colulmns .. What my programmer did was, he has put current month salary into previous month salary column and previous month salary into current month salary ( I mean the values), now with sql statement, I want to SWAP the values .. how can I do that that too without creating any interim table or any other table? Apart from SQL, can we also use PL/SQL here ?? If so, how
Regards
Message was edited by:
user463477

Answer 1

You can do that with a single update stmt.
Please this exercise as a clue and apply same logic for ur table(s).
create table t11(c1 number,c2 number);
insert into t11 values(1,2); commit;
update t11 set c1=c2, c2=c1;
select * from t11
output:
c1 c2
2 1
Cheers
Ravikanth