You can create table as mentioned above but with the exception that the PI would become the first column only and may not reflect the original table PI. you can use something like this.
Create table dbname.new_table as dbname.old_table with data;
alter table dbname.new_table add new_col1 varchar(10), add new_col2 varchar(10) ;
This way the PI would be the same.
Alternately you can take the definition of the old table, add the 2 new columns, create a new table and do an insert sel with NULLs/defaults for the new columns.