How to declare and display a variable in Oracle

Question

I would like to declare and display a variable in Oracle.

In T-SQL I would do something like this

DECLARE @A VARCHAR(10) --Declares @A
SELECT @A = \'         


        

Answer 1

Make sure that, server output is on otherwise output will not be display;

sql> set serveroutput on;

declare
  n number(10):=1;
begin
  while n<=10
 loop
   dbms_output.put_line(n);
   n:=n+1;
 end loop;
end;
/

Outout: 1 2 3 4 5 6 7 8 9 10