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Date: Sat, 1 Mar 2025 10:31:11 -0800
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Subject: Re: Version compatibility
To: Igor Korot <ikorot01@gmail.com>
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Cc: pgsql-general <pgsql-general@postgresql.org>
From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 3/1/25 14:17, Igor Korot wrote:

Reply to list also.
Ccing list.

Comments inline.

> Hi, Adrian,
> On Sat, Mar 1, 2025 at 11:23 AM Adrian Klaver <adrian.klaver@aklaver.com 
> <mailto:adrian.klaver@aklaver.com>> wrote:
> 
>     On 3/1/25 13:15, Igor Korot wrote:
>      > Hi, ALL,
>      > I have PostgreSQL version 13 and ODBC driver version 11
>      > on my Gentoo box.
>      >
>      > Are they compatible? Can I still connect to the server?
> 
>     Have you tried to make a connection?
> 
> 
> Tried.
> 
> [code]
> IgorsGentoo/home/igor/dbhandler_new/Debug #cat /etc/unixODBC/odbcinst.ini
> Trace=yes
> TraceFile=/tmp/sql.log
> [PostgreSQL]
> Description=PostgreSQL drver
> Driver=/usr/lib64/psqlodbcw.so
> 
> IgorsGentoo/home/igor/dbhandler_new/Debug #cat /etc/unixODBC/odbc.ini
> [PostgreSQL]
> Driver=PostgreSQL
> Server=localhost
> PORT=5432
> DATABASE=draft
> OOPTION=3
> USER=postgres
> PASSWORD=wasqra
> IgorsGentoo/home/igor/dbhandler_new/Debug #
> 
> igor@IgorsGentoo~/dbhandler/Debug $isql -v PostgreSQL
> [IM002][unixODBC][Driver Manager]Data source name not found and no 
> default driver specified
> [ISQL]ERROR: Could not SQLConnect
> igor@IgorsGentoo~/dbhandler/Debug $
> 
> [/code]

From:

https://www.mankier.com/1/isql

"DSN

     The Data Source Name (DSN) used to connect to the SQL database. 
unixODBC looks for the specified DSN in /etc/odbc.ini and 
$HOME/.odbc.ini, with the latter taking precedence.
"

Do you have a $HOME/.odbc.ini?

Also in odbc.ini, per man odbc.ini, I believe you have to have something 
like:

[ODBC Data Sources]
Postgresql = This is my Postgres DSN.

 From man odbc.ini:

"[ODBC Data Sources] section

	The required section [ODBC Data Sources] lists each data source name 
(DSN) as a key. The associated values serve as comments. Each  entry 
must be matched by an ini file [section] describing the data source.
"

> I'd like to develop backward compatible software which is compatible
> with the oldest possible combination..

Not following.
 From my experiences with the ODBC driver it is backwards compatible, so 
I would think using a more recent version would be the preferred solution.


-- 
Adrian Klaver
adrian.klaver@aklaver.com