Обсуждение: Looking for a way to get my time format.

I am looking for a way to get my time format to display in the format of hh:mm AM/PM instead to the default 24 hour
timeformat. Does anybody have any suggestions for how to do this? 

What you need is the to_char() function.  The
documentation for this function can be found here:

http://www.postgresql.org/idocs/index.php?functions-formatting.html

Here's an example of how you would use this function.

processdata=> select to_char(now(), 'YYYY-DD-MM
HH:MM:SS PM')
processdata-> ;
        to_char
------------------------
 2001-04-06 08:06:32 AM
(1 row)


Notice how the format string has PM in it but the time
returned is AM, that spooked me at first, but it seems
to work as one would hope.

Jason

--- Eric Naujock  <naujocke@abacusii.com> wrote:
> I am looking for a way to get my time format to
> display in the format of hh:mm AM/PM instead to the
> default 24 hour time format. Does anybody have any
> suggestions for how to do this?
>
>
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> TIP 2: you can get off all lists at once with the
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"Eric Naujock " <naujocke@abacusii.com> writes:

> I am looking for a way to get my time format to display in the
> format of hh:mm AM/PM instead to the default 24 hour time
> format. Does anybody have any suggestions for how to do this?

There's no function to_char for time :-(; try with your own function. Something
like

create function time2str(time) returns text as '
declare
  var_time alias for $1;
  var_hrs int;
  var_mins int;
  var_mod text;
begin
  var_hrs := extract(hours from var_time);
  var_mins := extract(minutes from var_time);
  if var_hrs >= 12 then
     var_mod := ''PM'';
     if var_hrs > 12 then
       var_hrs := var_hrs - 12;
     end if;
  else
     var_mod := ''AM'';
  end if;
  return to_char(var_hrs,''fm00'') || '':'' || to_char(var_mins,''fm00'') || var_mod;
end;
' language 'plpgsql';

regression=# select time2str('7:00:00'::time);
 time2str
----------
 07:00AM
(1 row)

regression=#

hth,
Manuel.


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