On 23 November 2017 at 12:31, Brahmam Eswar wrote:
> Unable to add multiple keys to the table.
>
> ALTER TABLE table1 ADD CONSTRAINT Table1_PK PRIMARY KEY (Col1,Col2);
>
> ERROR: multiple primary keys for table "table1" are not allowed
> SQL state: 42P16
>
> --
> Thanks & Regards,
> Brahmeswara Rao J.
>
Hey,
table can have only one primary key. And most probably you already have one.
regards,
Szymon Lipiński