thanks so much!
Tom Lane wrote:
> Justin Yao <justin(at)snooth(dot)com> writes:
>> But the question is, why there's no column named "oid" and it still works?
>
> \d doesn't show system columns.
> http://www.postgresql.org/docs/8.3/static/ddl-system-columns.html
>
> regards, tom lane
>