Re: BUG #3252: Select Order by time

Hi Kevin,



Thanks for the response. I am a little embarrassed and I was in fact hoping
that my stupid Report would just dissolve away in the abyss. In your
responding I am of course quite bowled over that - Hey there are people
genuinely out there - unlike reports one may send to mickeysoft who are
probably paid handsomely.



You are of course right. I do not know what I was seeing - might have been
something to do with it being about 3:00am my time.



Interesting that 24:00 is accepted by Postgres. Didn't know that.



Again, Thank you for the effort you have expended to look into my (really
stupid) bug report.



Regards





Lee



Lee Chua





-----Original Message-----
From: Kevin Grittner [mailto:Kevin.Grittner@wicourts.gov]
Sent: Thursday, 26 April 2007 6:15 AM
To: Lee Chua; Tom Lane
Cc: pgsql-bugs@postgresql.org
Subject: Re: [BUGS] BUG #3252: Select Order by time



>>> On Wed, Apr 25, 2007 at 12:42 AM, in message
<14184.1177479755@sss.pgh.pa.us>,

Tom Lane <tgl@sss.pgh.pa.us> wrote:

> "Lee Chua" <leehchua@bensecurity.com.au> writes:

>> When we select and order by time we get 00:00:00 as the latest time of
the

>> day.

>

> Really?  It works as expected for me:

>

> regression=# create table foo(f1 time);

> CREATE TABLE

> regression=# insert into foo values ('1:00:00'),('2:00:00'),('0:00:00'),

> regression- #  ('23:00:00'), ('23:59:59');

> INSERT 0 5

> regression=# select * from foo order by f1;

>     f1

> ----------

>  00:00:00

>  01:00:00

>  02:00:00

>  23:00:00

>  23:59:59

> (5 rows)



I just wanted to point out that midnight is supported at both ends -- the
start of the day as 00:00:00, and the end of the day as 24:00:00.  Perhaps
the application software is not distinguishing these?



Modifying Tom's example to insert one more row, you will see:



    f1

----------

 00:00:00

 01:00:00

 02:00:00

 23:00:00

 23:25:59

 24:00:00

(6 rows)



I know there are some who require this behavior.  (I had to add it to a
database product years ago when it was used to develop an application for
fire departments.)



-Kevin