The following bug has been logged online:
Bug reference: 5355
Logged by: Andy Lester
Email address: andy@petdance.com
PostgreSQL version: 8.3.6
Operating system: Linux
Description: locale incorrectly comma-separates "(null)"
Details:
In my .psqlrc I have the following (among others)
\pset null '(null)'
\pset numericlocale on
When I select numeric columns that have NULL values, they show as "(nu,ll)".