How to UPDATE all columns of a record without having to list every column

Question

I\'m trying to figure out a way to update a record without having to list every column name that needs to be updated.

For instance, it would be nice if I could use so

Answer 1

If you are using Oracle, you can use rowtype

declare 
    var_x  TABLE_A%ROWTYPE;
Begin
    select * into var_x
    from TABLE_B where rownum = 1;

    update TABLE_A set row = var_x
    where ID = var_x.ID;
end;
/

given that TABLE_A and TABLE_B are of same schema