Copy values from one column to another in the same table

Question

How can I make a copy values from one column to another? I have:

Database name: list
number | test
123456 | somedata
123486 | somedata1
232344 | 34
         


        

Answer 1

you can do it with Procedure also so i have a procedure for this

 DELIMITER $$
 CREATE PROCEDURE copyTo()
       BEGIN
               DECLARE x  INT;
            DECLARE str varchar(45);
              SET x = 1;
            set str = '';
              WHILE x < 5 DO
                set  str = (select source_col from emp where id=x);
            update emp set target_col =str where id=x;      
            SET  x = x + 1;
                END WHILE;

       END$$
   DELIMITER ;