| From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | "zxo102 ouyang" <zxo102(at)gmail(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: how to "group" several records with same timestamp into one line? |
| Date: | 2008-11-14 14:29:42 |
| Message-ID: | dcc563d10811140629u62718f02w42fde5176e84f770@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-general |
On Wed, Nov 12, 2008 at 3:59 AM, zxo102 ouyang <zxo102(at)gmail(dot)com> wrote:
> 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
>
Lookup the crosstab contrib functions.
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