Search Postgresql Archives

Re: getting domain information from query results

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Marco Baringer <mb@xxxxxxx> writes:
> it seems, if my understanding of the protocol is correct, that the oid
> of the underlying type, text in this case, is returned and not the oid
> of the domain.

That's correct.  This was an intentional decision long ago, and we're
unlikely to reconsider now for fear of breaking applications.  (IIRC,
the argument was that client-side code was most likely to be concerned
with matters like the textual representation of the value, and so getting
told about domains would just complicate life.)

> i tried creating a new type (which have solved my problem with the
> "wrong" oid getting returned with the query results), but then realized
> i'd have to implement all of the associated operators for my new type as
> well (they'd just be cut 'n pastes of the equivalent operators for
> varchar, but that's still a bit more work than i'd like to do at this
> point).

If you'd dug a bit more deeply, you'd have noticed that varchar doesn't
*have* any operators; it relies on text's operators via an implicit cast
to text.  You could likely do the same for a custom string type.  This
answer doesn't scale to non-string data types of course, but it might
be good enough for your situation.

			regards, tom lane


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux