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* still sorting and casting problems
@ 2002-09-12 10:01 juerg.rietmann@pup.ch
0 siblings, 2 replies; 3+ messages in thread
From: juerg.rietmann@pup.ch @ 2002-09-12 10:01 UTC (permalink / raw)
To: pgsql-sql
Hello there
Unfortunately, I can't change the fieldtype that easy because other
applications use the date as char(10) field as well.
I need to sort the query by the log_date desc (log_date is char(10)). I
tried the following without success :
select id, log_date from userlog order by cast (log_date as date) desc
select id, log_date from userlog order by date(log_date) desc
Please help and thank's in advance ... jr
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^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: still sorting and casting problems
@ 2002-09-12 13:54 Stephan Szabo <sszabo@megazone23.bigpanda.com>
parent: juerg.rietmann@pup.ch
1 sibling, 0 replies; 3+ messages in thread
From: Stephan Szabo @ 2002-09-12 13:54 UTC (permalink / raw)
To: juerg.rietmann@pup.ch; +Cc: pgsql-sql
On Thu, 12 Sep 2002 juerg.rietmann@pup.ch wrote:
>
> Hello there
>
> Unfortunately, I can't change the fieldtype that easy because other
> applications use the date as char(10) field as well.
>
> I need to sort the query by the log_date desc (log_date is char(10)). I
> tried the following without success :
>
> select id, log_date from userlog order by cast (log_date as date) desc
>
> select id, log_date from userlog order by date(log_date) desc
What do you get when trying this last query (something of the sort
works for me in 7.3beta). It's possibly that you might need to use
date(log_date::text) desc, but without the error it's hard to say.
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: still sorting and casting problems
@ 2002-09-12 13:57 Jeff Eckermann <jeff_eckermann@yahoo.com>
parent: juerg.rietmann@pup.ch
1 sibling, 0 replies; 3+ messages in thread
From: Jeff Eckermann @ 2002-09-12 13:57 UTC (permalink / raw)
To: juerg.rietmann@pup.ch; pgsql-sql
--- juerg.rietmann@pup.ch wrote:
> I need to sort the query by the log_date desc
> (log_date is char(10)). I
> tried the following without success :
>
> select id, log_date from userlog order by cast
> (log_date as date) desc
>
> select id, log_date from userlog order by
> date(log_date) desc
>
> Please help and thank's in advance ... jr
>
You haven't shown the error message here, but I'm
guessing that there is no direct cast between char and
date available in PostgreSQL. Try casting first to
text, then to date.
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^ permalink raw reply [nested|flat] 3+ messages in thread
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2002-09-12 10:01 still sorting and casting problems juerg.rietmann@pup.ch
2002-09-12 13:54 ` Stephan Szabo <sszabo@megazone23.bigpanda.com>
2002-09-12 13:57 ` Jeff Eckermann <jeff_eckermann@yahoo.com>
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