dstandish commented on code in PR #31754:
URL: https://github.com/apache/airflow/pull/31754#discussion_r1222121662


##########
docs/apache-airflow/howto/set-config.rst:
##########
@@ -38,6 +38,19 @@ or by creating a corresponding environment variable:
 
     export AIRFLOW__DATABASE__SQL_ALCHEMY_CONN=my_conn_string
 
+Note that when the section name has a dot in it, you must replace it with an 
underscore when setting the env var.
+For example consider section ``providers.odbc``:
+
+.. code-block:: ini
+
+    [providers.odbc]
+    allow_driver_in_extra = true
+
+.. code-block:: bash
+
+    export AIRFLOW__PROVIDERS_ODBC__ALLOW_DRIVER_IN_EXTRA=true
+
+

Review Comment:
   ok have a look please @eladkal 
   



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