RE: Dates

From: Bobak, Mark <Mark.Bobak_at_il.proquest.com>
Date: Fri, 25 Jun 2004 11:44:38 -0400
Message-ID: <4C9B6FDA0B06FE4DAF5918BBF0AD82CF09660B39@bosmail00.bos.il.pqe>

To be clear, try:
ALTER SESSION SET NLS_DATE_FORMAT=3D'YYYY-MM-DD HH24:MI:SS'; However, I believe 'LIKE' on a date field implies any time from 00:00:00 = to 23:59:59 will match.
That ought to explain the difference between #1 and #2.

As for the difference between #3 and #4, '25-JUN-04' implies June 25th, = 2004, 00:00:00.
So, in 3, there are no records between 00:00:00 and 00:00:00 on June = 25th.
In #4, you'looking from June 24th, 2004 00:00:00 through June 26th, 2004 = 00:00:00, which clearly encompasses all datetimes on June 25th, so you = get those two records.

Nothing unusual here.

Hope that helps,

-Mark

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Oracle Sent: Friday, June 25, 2004 11:36 AM
To: oracle-l_at_freelists.org
Subject: Dates

Can any please explain the reason for the differing results in the = folowing
queries

1)
SELECT NCSN, NC_DATE_CLS FROM NONCONFORM WHERE NC_DATE_CLS LIKE =
'25-JUN-04'
NCSN NC_DATE_CLS

--------- ---------
     3298 25-JUN-04
     3299 25-JUN-04

2)
SELECT NCSN, NC_DATE_CLS FROM NONCONFORM WHERE NC_DATE_CLS =3D =
'25-JUN-04'
no rows selected

3)
SELECT NCSN, NC_DATE_CLS FROM NONCONFORM WHERE NC_DATE_CLS between
'25-JUN-04' AND '25-JUN-04';
no rows selected

4)
SELECT NCSN, NC_DATE_CLS FROM NONCONFORM WHERE NC_DATE_CLS between
'24-JUN-04' AND '26-JUN-04'
NCSN NC_DATE_CLS

--------- ---------
     3298 25-JUN-04
     3299 25-JUN-04

Table nonconform....columns....NCSN NUMBER, NC_DATE_CLS DATE...... Oracle 8.1.7

Thanks

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Received on Fri Jun 25 2004 - 10:41:30 CDT