Re: how to define date column in a table with only mm/dd/yyyy

If the only value you want is the trunc value, modify the table to remove = the time portion.

update my_table
set trade_date with trunc(trade_date);

commit;

>>> Scott Canaan <srcdco_at_ritvax.isc.rit.edu> 11/01/00 01:36PM >>>
Rao,

    Yes, it's a common mistake:
 dbms_output.put_line (to_char(d11, 'dd-MON-yyyy HH:MM')); should be:
 dbms_output.put_line (to_char(d11, 'dd-MON-yyyy HH:MI'));

You are getting the month for the minutes. The abbreviation MM is month, = MI is
for minutes.

"Rao, Maheswara" wrote:

> Hi All,
>
> Thanks to all of you that took the time to answer the question.
>
> Now, regarding the environment. We process broker trades and pass them =
for
> execution to stock exchanges. I store these trade messages into a file.
> Now, we need to compare different trade messages based on the date -
> dd/mm/yyyy portion only. (to deal with duplicate trade messages). =
Hence, I
> thought whether it is possible to create a date column that will store =
only
> dd/mm/yyyy but not the time. Now, I will start using TRUNC before
> inserting/updating the column. (Earlier I did not know this TRUNC. =
Thanks to
> the list for this.
>
> I wrote a small test procedure. Following is the one
>
> create or replace procedure d1 as
>
> d11 date;
> d12 date;
>
> Begin
>
> d11 :=3D to_date('10-OCT-1999 10:56:20' , 'dd-MON-yyyy HH:MI:SS');
> d12 :=3D to_date('10-OCT-1999 11:35:20' , 'dd-MON-yyyy HH:MI:SS');
>
> if trunc(d11) =3D trunc(d12)
> then
> dbms_output.put_line ('YES');
> else
> dbms_output.put_line ('NO');
> end if;
>
> d11 :=3D trunc(d12);
> dbms_output.put_line (to_char(d11, 'dd-MON-yyyy HH:MM'));
>
> END d1;
>
> /
>
> show errors;
>
> QUESTION:
>
> The above program always is outputting the time portion as 12:10 in the =
time
> portion (example: 10-OCT-1999 12:10) Can anybody please explain to me =
the
> reason for this?
>
> Thanks,
>
> Rao
>
> Maheswara.Rao_at_SunGardP3.com=20
>
> -----Original Message-----
> Sent: Tuesday, October 31, 2000 4:51 PM
> To: Multiple recipients of list ORACLE-L
>
> Maybe he wants to run date comparisons on the field. In that case, the
> comparison would fail unless the seconds match. If he only stored the =
DATE
> portion, then more comparisons would match. 01-Nov-2000 =3D 01-Nov-200 =
BUT
> 01-Nov-2000:01:01:00 !=3D 01-Nov-2000:01:01:01.
>
> We need more information to understand why he is wanting to do this.
>
> << rest of the messages deleted >>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com=20
> --
> Author: Rao, Maheswara
> INET: Maheswara.Rao_at_Sungardp3.com=20
>
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--
Scott Canaan (srcdco_at_rit.edu)
"Life is like a sewer, what you get out of it depends on what you put into =
it" -
Tom Lehrer


--=20
Please see the official ORACLE-L FAQ: http://www.orafaq.com=20
--=20
Author: Scott Canaan
  INET: srcdco_at_ritvax.isc.rit.edu=20

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