Re: how to several records with same timestamp into one line?

am  Wed, dem 12.11.2008, um 18:57:42 +0800 mailte zxo102 ouyang folgendes:
> Hi everyone,
>      My data with same timestamp "2008-11-12 12:12:12" in postgresql are as
> follows
>
> rowid  data   unit            channel          create_on
> ------------------------------------------------------------------------------
>  1        1.5     MPa          channel1  2008-11-12 12:12:12
>  2        2.5     M3           channel2   2008-11-12 12:12:12
>  3        3.5     M3           channel3   2008-11-12 12:12:12
>  4        4.5     t               channel4   2008-11-12 12:12:12
> ------------------------------------------------------------------------------
>
> I would like to "group" them into one line with SQL like
>
>    1.5     MPa   2.5    M3  3.5  M3   4.5   t   2008-11-12 12:12:12

Maybe you can create a new aggregate, for instance like there:

http://www.zigo.dhs.org/postgresql/#comma_aggregate



Regards, Andreas
--
Andreas Kretschmer
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