How to copy the column values from one to other?

[RamKumar]

I need to understand the SAS code to copy the column value from one to other like below.

Assume i've a table called 'one' with values like below.

a b

1 2

3 4

5 6

I need to copy the column values from a to b and the output should be like

a b

1 1

3 3

5 5

Please suggest the SAS code to achieve this.

[RW9]

Well I assume b in the second table is b from the first table - 1 so:

data want (rename=(new_b=b));

     set have;

     new_b=b-1;

run;

[hello_fj]

I think we shoud assign value of vara to  varb  just like this

data want;

set have;

b=a;

run;

[ShreyasTare]

If A and B column both are in same table then you can try following code :

data want;
set have;
array new{1} a;
b = sum(of new{*});
run;

P.S. : I don't think its a proper way to copy columns though!