Displaying numbers in SQL window results

[BWendling]

create table test (a number);
insert into test values (1/7);
commit;
select a,to_char(a) from test

How can I change PL/SQL Developer to show the full precision? I know there is a "TO_CHAR" option, but I don't want to lose the NUMBER type (right aligned, formatted).

 

[Marco Kalter]

This is only possible with the "Number fields to_char" option.