| From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
|---|---|
| To: | Sebastien Flaesch <sebastien(dot)flaesch(at)4js(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | M Tarkeshwar Rao <m(dot)tarkeshwar(dot)rao(at)ericsson(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: After upgrading libpq, the same function(PQftype) call returns a different OID |
| Date: | 2025-03-20 15:33:07 |
| Message-ID: | f14fee4e-82ce-4cfe-9f0d-19292a372968@aklaver.com |
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| Lists: | pgsql-general |
On 3/20/25 00:17, Sebastien Flaesch wrote:
> Let's not deviate from my request:
>
> I have implemented various DB client modules using the C client APIs,
> for Oracle DB, SQL Server, IBM DB2, MySQL/MariaDB, SQLite and PostgreSQL.
>
> While I like PostgreSQL a lot, this is the only case where I have to
> define myself the column type ids, to implement a "describe column" feature.
>
> ODBC has SQLDescribeCol() / SQLDescribeColW() and predefined SQL_*
> constants like SQL_INTEGER, SQL_VARCHAR ...
>
> Native PostgreSQL built-in SQL types should be listed in a .h header of
> the C client API
>
You could borrow from here:
https://github.com/postgresql-interfaces/psqlodbc/blob/main/pgtypes.h
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com
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