| Lists: | Postg토토 베이SQL : Postg토토 |
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| From: | "Pawel Hudak" <pawel(dot)hudak(at)nagler-company(dot)com> |
|---|---|
| To: | <pgsql-interfaces(at)postgresql(dot)org> |
| Subject: | ECPGttype/OID |
| Date: | 2006-11-28 10:15:49 |
| Message-ID: | !~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAAc30zg/QEkkaCKbPrDHyPg8KAAAAQAAAAivoB7fFZmk2nClpc+wJzZQEAAAAA@nagler-company.com |
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| Lists: | Postg토토 베이SQL : Postg토토 |
Hi *,
I'm newbie in PostgreSQL. I'm using C interface.
I'm a little confused regarding type enumerations/defines.
There is set of OID defines in pg_type.h.
But there is also file ecpgtype.h which contains enumeration ECPGttype.
Is there any mapping between OID and ECPGttype?
What are usecases of those types?
Thanks
----
Pawel Hudak
e-mail: <mailto:pawel(dot)hudak(at)nagler-company(dot)com>
pawel(dot)hudak(at)nagler-company(dot)com
| From: | Michael Meskes <meskes(at)postgresql(dot)org> |
|---|---|
| To: | Pawel Hudak <pawel(dot)hudak(at)nagler-company(dot)com> |
| Cc: | pgsql-interfaces(at)postgresql(dot)org |
| Subject: | Re: ECPGttype/OID |
| Date: | 2006-12-03 13:26:16 |
| Message-ID: | 20061203132616.GA32110@feivel.credativ.de |
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| Lists: | pgsql-interfaces |
On Tue, Nov 28, 2006 at 11:15:49AM +0100, Pawel Hudak wrote:
> I'm a little confused regarding type enumerations/defines.
>
> There is set of OID defines in pg_type.h.
These define the OIDs used in the database itself.
> But there is also file ecpgtype.h which contains enumeration ECPGttype.
These define the numbers used by ecpg to define its datatypes.
> Is there any mapping between OID and ECPGttype?
No. Well not really. ECPG does have a few conversion routines it needs
internally, but a full fledged mapping doesn't really exist. But then
you probably don't need one because the client-server conversation is
done in ascii most of the time and ecpg takes care of all the
conversions needed.
Michael
--
Michael Meskes
Email: Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org)
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