Re: Data type OIDs - Mailing list pgsql-novice

From: Joe Conway <mail@joeconway.com>
Subject: Re: [NOVICE] Data type OIDs
To: "Greg" <grigorey@yahoo.co.uk>
Cc: "Thom Brown" <thombrown@gmail.com>, pgsql-novice@postgresql.org
Date: Wednesday, 7 July, 2010, 17:44

On 07/07/2010 01:15 AM, Greg wrote:
> Hi Thom, well, it relates to reading/writing data using PostgreSQL
> protocol (v3). For example RowDescription message uses type OID to
> identify data type of the field. Same as with Parse message I need to
> specify OID of the parameter data type. As a result I want to declare an
> enum of all used data types and assignd PostgreSQL data type OID to
> appropriate value  - so development could be a little more intuitive.

I don't think there is any promise that type OIDs will never change, but
in practice they have been stable for many releases over 10+ years.

You should, however, use the macros in pg_type.h to refer to them, e.g.
INT8OID, TEXTOID, etc.

HTH,

Joe

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Joe Conway
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