Re: BUG #16238: Function " to_char(timestamp, text) " doesn't work properly

PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> As i noticed the problem is that the function "
> to_char(timestamp, text) " doesn't work properly. For example this query "
> select to_char('2020-01-29'::date,'Day') " give me this result "Wednesday",
> but this query " select to_char('2020-01-31'::date,'Day') " give me this
> result "Friday ".
> So, i guess it is not right to have days with many spaces as a result and
> some days without any space.

No, that's behaving as expected and documented. If you don't want
fixed-width output, use the FM prefix:

=# select to_char('2020-01-31'::date,'-Day-');
to_char
-------------
-Friday -
(1 row)

=# select to_char('2020-01-31'::date,'-FMDay-');
to_char
----------
-Friday-
(1 row)

regards, tom lane