Does anyone know of a way to have a DESC function on a column in a primary key? Below is what I've tried and the results:


create table tab1 (col1 number, col2 number, col3 number);

alter table tab1 add constraint pk1 primary key (col1) using index
(create index indx1 on tab1 (col1 desc));

alter table tab1 add constraint pk1 primary key (col1) using index
*
ERROR at line 1:
ORA-01418: specified index does not exist


I've also tried:

create unique index indx1 on tab1 (col1 desc);
alter table tab1 add constraint pk1 primary key (col1) using index indx1;

with the same results.

Any ideas?

Thanks,
J