Message-ID: <gh-postgresql-interfaces-psqlodbc-143-c3551086212@github.com>
From: "neetaghadge (@neetaghadge)" <noreply+neetaghadge@github.com>
To: "postgresql-interfaces/psqlodbc" <noreply+postgresql-interfaces-psqlodbc@github.com>
Date: Wed, 19 Nov 2025 06:55:50 +0000
Subject: Re: [postgresql-interfaces/psqlodbc] issue #143: avoid session pinning with psqlODBC and RDS Proxy
In-Reply-To: <gh-postgresql-interfaces-psqlodbc-143@github.com>
References: <gh-postgresql-interfaces-psqlodbc-143@github.com>
List-Id: <gh-postgresql-interfaces-psqlodbc.github.com>
X-GitHub-Author-Login: neetaghadge
X-GitHub-Comment-Id: 3551086212
X-GitHub-Comment-Type: issue_comment
X-GitHub-Issue: 143
X-GitHub-Repo: postgresql-interfaces/psqlodbc
X-GitHub-Type: comment
X-GitHub-Url: https://github.com/postgresql-interfaces/psqlodbc/issues/143#issuecomment-3551086212
Content-Type: text/plain; charset=utf-8

Hi @davecramer ,
With this fix, the RDS Proxy fails to connect to the database, returning: **FATAL: Feature not supported: RDS Proxy currently doesn’t support command-line options.**

After I removed the newly added code from **connection.c,** my application was able to connect to the RDS Proxy:
__/* Add DateStyle and extra_float_digits as startup parameters */
if (cnt < PROTOCOL3_OPTS_MAX - 2)
{
    opts[cnt] = "options";  vals[cnt++] = "-cextra_float_digits=2";
    opts[cnt] = "options";  vals[cnt++] = "-cDateStyle=ISO";
}_

For reference, when I tested locally by removing only the SET commands from **LIBPQ_CC_connect**() method, I noticed that sessions were no longer being pinned with this fix:
**Before:**
_res = CC_send_query(self, "SET DateStyle = 'ISO';SET extra_float_digits = 2;" ISOLATION_SHOW_QUERY, NULL, READ_ONLY_QUERY, NULL);_
**After:**
_res = CC_send_query(self, ISOLATION_SHOW_QUERY, NULL, READ_ONLY_QUERY, NULL);_