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* Bug with ORDER BY expression [ ASC | DESC ] ?
@ 1970-01-01 00:00 Christoph Haller <ch@rodos.fzk.de>
2002-05-22 13:56 ` Re: Bug with ORDER BY expression [ ASC | DESC ] ? Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 3+ messages in thread
From: Christoph Haller @ 1970-01-01 00:00 UTC (permalink / raw)
To: pgsql-sql
Hi,
I am doing the following select in PostgreSQL 7.2.1
select distinct on (o.sid,o.timepoint,o.lid,o.mid) o.sid,o.timepoint,o.lid,o.mid,o.value
from onfvalue o, tempreftime t
where o.sid=t.sid and o.timepoint=t.timepoint and o.lid=t.lid and o.mid=t.mid
order by o.sid,o.timepoint,o.lid,o.mid,o.entrancetime desc;
but the result is coming in ascending order.
There is no difference to
select distinct on (o.sid,o.timepoint,o.lid,o.mid) o.sid,o.timepoint,o.lid,o.mid,o.value
from onfvalue o, tempreftime t
where o.sid=t.sid and o.timepoint=t.timepoint and o.lid=t.lid and o.mid=t.mid
order by o.sid,o.timepoint,o.lid,o.mid,o.entrancetime asc;
Is this a bug or am I missing something?
Regards, Christoph
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: Bug with ORDER BY expression [ ASC | DESC ] ?
1970-01-01 00:00 Bug with ORDER BY expression [ ASC | DESC ] ? Christoph Haller <ch@rodos.fzk.de>
@ 2002-05-22 13:56 ` Tom Lane <tgl@sss.pgh.pa.us>
1970-01-01 00:00 ` Re: Bug with ORDER BY expression [ ASC | DESC ] ? Christoph Haller <ch@rodos.fzk.de>
0 siblings, 1 reply; 3+ messages in thread
From: Tom Lane @ 2002-05-22 13:56 UTC (permalink / raw)
To: Christoph Haller <ch@rodos.fzk.de>; +Cc: pgsql-sql
Christoph Haller <ch@rodos.fzk.de> writes:
> select distinct on (o.sid,o.timepoint,o.lid,o.mid) o.sid,o.timepoint,o.lid,o.mid,o.value
> from onfvalue o, tempreftime t
> where o.sid=t.sid and o.timepoint=t.timepoint and o.lid=t.lid and o.mid=t.mid
> order by o.sid,o.timepoint,o.lid,o.mid,o.entrancetime desc;
> but the result is coming in ascending order.
Perhaps you meant to say
order by o.sid desc, o.timepoint desc, o.lid desc, o.mid desc, o.entrancetime desc;
regards, tom lane
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: Bug with ORDER BY expression [ ASC | DESC ] ?
1970-01-01 00:00 Bug with ORDER BY expression [ ASC | DESC ] ? Christoph Haller <ch@rodos.fzk.de>
2002-05-22 13:56 ` Re: Bug with ORDER BY expression [ ASC | DESC ] ? Tom Lane <tgl@sss.pgh.pa.us>
@ 1970-01-01 00:00 ` Christoph Haller <ch@rodos.fzk.de>
0 siblings, 0 replies; 3+ messages in thread
From: Christoph Haller @ 1970-01-01 00:00 UTC (permalink / raw)
To: tgl@sss.pgh.pa.us; +Cc: pgsql-sql
>
> Christoph Haller <ch@rodos.fzk.de> writes:
> > select distinct on (o.sid,o.timepoint,o.lid,o.mid) o.sid,o.timepoint,o.lid,o.mid,o.value
> > from onfvalue o, tempreftime t
> > where o.sid=t.sid and o.timepoint=t.timepoint and o.lid=t.lid and o.mid=t.mid
> > order by o.sid,o.timepoint,o.lid,o.mid,o.entrancetime desc;
>
> > but the result is coming in ascending order.
>
> Perhaps you meant to say
>
> order by o.sid desc, o.timepoint desc, o.lid desc, o.mid desc, o.entrancetime desc;
>
>
Indeed. Thanks, Christoph
^ permalink raw reply [nested|flat] 3+ messages in thread
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1970-01-01 00:00 Bug with ORDER BY expression [ ASC | DESC ] ? Christoph Haller <ch@rodos.fzk.de>
2002-05-22 13:56 ` Tom Lane <tgl@sss.pgh.pa.us>
1970-01-01 00:00 ` Christoph Haller <ch@rodos.fzk.de>
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