Обсуждение: Problem with showing time diff?

I have the following select:

select to_char((Log_Fortrykk.SistePlate::time -
OrdreNew.SistePlate::time)::interval,'HH24:MI') as diff from Log_Fortrykk

I need the output to be HH:MM, e.g. 00:09... But my prb is when this diff is less than 0,
it shows as 00:-9 and not -00:09

How can I fix this?


Regards,

BTJ

--
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Bjørn T Johansen

btj@havleik.no
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Someone wrote:
"I understand that if you play a Windows CD backwards you hear strange Satanic messages"
To which someone replied:
"It's even worse than that; play it forwards and it installs Windows"
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On Thu, Nov 11, 2004 at 11:55:33AM +0100, Bj�rn T Johansen wrote:
>
> select to_char((Log_Fortrykk.SistePlate::time -
> OrdreNew.SistePlate::time)::interval,'HH24:MI') as diff from Log_Fortrykk
>
> I need the output to be HH:MM, e.g. 00:09... But my prb is when this diff
> is less than 0, it shows as 00:-9 and not -00:09

The documentation deprecates to_char(interval, text) and the Release
Notes for 8.0 say that 8.1 will remove it.

You might be able to use substring():

SELECT substring('-00:09:10'::interval from '(.*):[0-9][0-9]$');
 substring
-----------
 -00:09


--
Michael Fuhr
http://www.fuhr.org/~mfuhr/