Timestamp difference issue

Hi,
I get blank result when I select a difference between 2 timestamps with one or more aggreagate function.
example :
create table EHTest (colA timestamp(3));
insert into EHTest (colA) values (sysdate) x 5
select min (colA), max (colA), min (colA) - max (colA) from EHTest
result :
27-JUN-06 12.07.31.000000000 PM 27-JUN-06 12.07.41.000000000 PM ' '
select sysdate - max(colA) from EHTest
result :
DB = 9.2.0.6
SQL developer version 1557
Thanks,
Regards
Eric Henrard

A late response and not from the SQL Developer team, but I tried this in SQL*Plus, and I got the following results for the queries:
select min (colA), max (colA), min (colA) - max (colA) from EHTest;
06-JUL-06 12.57.22.000 PM 06-JUL-06 12.58.01.000 PM -000000000 00:00:39.000
select sysdate - max(colA) from EHTest;
+000000000 00:04:46.000
I would guess that this is a problem with how SQL Developer is displaying interval values, because unlike date/datetime arithmetic (which returns number values for these types of expressions), timestamp arithmetic returns interval values (of INTERVAL DAY TO SECOND by default).
If I try the following query (which returns 1 day as an interval value):
select ( sysdate - ( sysdate - 1) ) day to second from dual;
I get +000000001 00:00:00 in SQL*Plus and blank in SQL Developer.

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OrionNet wrote:
Hello,
Is this works for youIt will not. First of all, look at:
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2                                'MM/DD/YYYY HH24:MI:SS:FF'
3                  )
4                  - 6 / 24,
5                  'MM/DD/YYYY HH24:MI:SS.FF'
6                  )
7 FROM DUAL
8 /
                'MM/DD/YYYY HH24:MI:SS.FF'
ERROR at line 5:
ORA-01821: date format not recognized
SQL> SELECT TO_CHAR (TO_TIMESTAMP ('04/15/2008 07:17:20:485749',
2                                'MM/DD/YYYY HH24:MI:SS:FF'
3                  )
4                  - 6 / 24,
5                  'MM/DD/YYYY HH24:MI:SS'
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3 )
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3 )
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Hi,
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hi all
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hi Sreedhar,
Try in google before posting in forums
My Google results for you
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