RE: Wrong results from date comaprisons
- From: "Ken Naim" <kennaim@xxxxxxxxx>
- To: "'Vlado Barun'" <vlado@xxxxxxxxxx>, "'Igor Neyman'" <ineyman@xxxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 24 May 2005 12:56:30 -0500
I exported the table and imported it to a different schema, and the query
worked as it should against the new table. I then rebuilt the old table and
it works fine now as well. The table structure is
CREATE TABLE TS.AGENCY_HISTORY
(
LGL_ENTY_ID NUMBER NOT NULL,
LGL_ENTY_ROLE_TYP_CD VARCHAR2(15 BYTE) NOT NULL,
AGY_HIST_NO NUMBER NOT NULL,
AGY_TYP_CD VARCHAR2(15 BYTE),
AGY_HIST_EFF_DT DATE NOT NULL,
AGY_HIST_END_DT DATE,
AGY_HIST_CNTC_NM VARCHAR2(40 BYTE),
AGY_HIST_REF_NO VARCHAR2(30 BYTE),
COMS_SCH_TYP_CD VARCHAR2(15 BYTE),
AGY_HIST_COMS_SCH_OVRD_RT NUMBER,
LA_AGY_HIST_ERR_COV_EXPR_DT DATE,
NOTE_ID NUMBER,
EMPL_ID_CREA NUMBER NOT NULL,
AGY_HIST_CREA_DTM DATE NOT NULL,
EMPL_ID_UPDT NUMBER,
AGY_HIST_UPDT_DTM DATE,
AGY_HIST_VOID_IND CHAR(1 BYTE) DEFAULT 'n'
NOT NULL,
LA_AGY_HIST_PRC_BIND_AUTH_IND CHAR(1 BYTE) DEFAULT 'n'
NOT NULL
)
TABLESPACE TS
LOGGING
COMPRESS
NOCACHE
NOPARALLEL
MONITORING;
-----Original Message-----
From: Vlado Barun [mailto:vlado@xxxxxxxxxx]
Sent: Tuesday, May 24, 2005 12:07 PM
To: 'Ken Naim'; 'Igor Neyman'; oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results from date comaprisons
Please provide the structure of the table...
Vlado Barun, M.Sc.
Senior Data Architect, Cadre5
www.cadre5.com
Office: 865 690 4442
Mobile: 865 335 7652
e-mail: vlado@xxxxxxxxxx
AIM: vbarun2
-----Original Message-----
From: Ken Naim [mailto:kennaim@xxxxxxxxx]
Sent: Tuesday, May 24, 2005 12:40 PM
To: 'Igor Neyman'; 'Vlado Barun'; oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results from date comaprisons
You are correct, the statement I pasted was the first one I ran but then
realized there could be a century difference so I reran it using the full
year. The data was from the second statement pasted below.
select to_char(agy_hist_eff_dt,'DD-Mon-YYYY HH24:mi:ss')
s,to_char(agy_hist_end_dt,'DD-Mon-YYYY HH24:mi:ss') e,
agy_hist_end_dt-agy_hist_eff_dt d from agency_history a where
agy_hist_void_ind='y'
and agy_hist_eff_dt!=agy_hist_end_dt
-----Original Message-----
From: Igor Neyman [mailto:ineyman@xxxxxxxxxxxxxx]
Sent: Tuesday, May 24, 2005 11:07 AM
To: kennaim@xxxxxxxxx; 'Vlado Barun'; oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results from date comaprisons
Are you sure, that you are showing the exact statement you are running, or
that your output produced by the statement you showed?
to_char(agy_hist_eff_dt,'DD-Mon-YY HH24:mi:ss') should return something
like:
01-Jan-04 00:00:00
and not:
01-Jan-2004 00:00:00
as shown in your output.
Igor Neyman, OCP DBA
ineyman@xxxxxxxxxxxxxx
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ken Naim
Sent: Tuesday, May 24, 2005 10:47 AM
To: 'Vlado Barun'; oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results from date comaprisons
The fields are date fields so AFAIK it cannot be any more precise. Also if
that were the case the diff should return some tiny fraction
-----Original Message-----
From: Vlado Barun [mailto:vlado@xxxxxxxxxx]
Sent: Tuesday, May 24, 2005 10:38 AM
To: kennaim@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results from date comaprisons
Depends on how precise the date columns are... Are you going down to the
milliseconds? Your output only goes to the second...
Vlado Barun, M.Sc.
Senior Data Architect, Cadre5
www.cadre5.com
Office: 865 690 4442
Mobile: 865 335 7652
e-mail: vlado@xxxxxxxxxx
AIM: vbarun2
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Ken Naim
Sent: Tuesday, May 24, 2005 11:31 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Wrong results from date comaprisons
Has anyone experienced this with 10g (10.1.0.4.0)? I am getting wrong
results from the following query. The start and end dates are equal yet,
they are returned by the query and the difference column shows again that
they should be equal although there are many rows that are filtered
correctly. There aren't any indexes on the fields in questions and there is
a constraint on the start date field
select to_char(agy_hist_eff_dt,'DD-Mon-YY HH24:mi:ss')
s,to_char(agy_hist_end_dt,'DD-Mon-YY HH24:mi:ss') e,
agy_hist_end_dt-agy_hist_eff_dt d from agency_history a where
agy_hist_void_ind='y'
and agy_hist_eff_dt!=agy_hist_end_dt
S E D
01-Jan-2004 00:00:00 01-Jan-2004 00:00:00 0
13-Oct-2003 00:00:00 13-Oct-2003 00:00:00 0
13-Jul-2004 00:00:00 13-Jul-2004 00:00:00 0
21-Oct-2004 00:00:00 21-Oct-2004 00:00:00 0
01-Jan-2005 00:00:00 01-Jan-2005 00:00:00 0
01-Jan-2004 00:00:00 01-Jan-2004 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
22-Jul-1999 00:00:00 22-Jul-1999 00:00:00 0
05-Jan-1998 00:00:00 05-Jan-1998 00:00:00 0
01-Jan-2004 00:00:00 01-Jan-2004 00:00:00 0
07-Jan-2004 00:00:00 07-Jan-2004 00:00:00 0
10-Jun-2004 00:00:00 10-Jun-2004 00:00:00 0
09-Jun-2004 00:00:00 09-Jun-2004 00:00:00 0
09-Nov-2004 00:00:00 09-Nov-2004 00:00:00 0
01-Jan-2005 00:00:00 01-Jan-2005 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
01-Jan-2005 00:00:00 01-Jan-2005 00:00:00 0
28-Jun-2002 00:00:00 28-Jun-2002 00:00:00 0
01-Jun-2001 00:00:00 01-Jun-2001 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
03-Apr-2000 00:00:00 03-Apr-2000 00:00:00 0
01-Apr-1999 00:00:00 01-Apr-1999 00:00:00 0
28-May-2002 00:00:00 28-May-2002 00:00:00 0
01-Apr-1999 00:00:00 01-Apr-1999 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
05-Jan-1998 00:00:00 05-Jan-1998 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
01-Jun-2001 00:00:00 01-Jun-2001 00:00:00 0
03-Apr-2000 00:00:00 03-Apr-2000 00:00:00 0
01-Jun-2001 00:00:00 01-Jun-2001 00:00:00 0
01-Jun-2001 00:00:00 01-Jun-2001 00:00:00 0
28-Jun-2002 00:00:00 28-Jun-2002 00:00:00 0
01-Jan-2003 00:00:00 01-Jan-2003 00:00:00 0
22-Jun-1999 00:00:00 22-Jun-1999 00:00:00 0
02-Jul-1999 00:00:00 02-Jul-1999 00:00:00 0
18-Apr-2000 00:00:00 18-Apr-2000 00:00:00 0
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