My guess is that your test data contains two dates with the year 1902.
09:18:49 SQL>
09:18:49 SQL>create table d( d date );
Table created.
09:18:49 SQL>
09:18:49 SQL>alter session set nls_date_format = 'mm/dd/yy';
Session altered.
09:18:49 SQL>
09:18:49 SQL>insert into d values('12/10/1902');
1 row created.
09:18:49 SQL>insert into d values('12/15/1902');
1 row created.
09:18:49 SQL>insert into d values('12/12/1952');
1 row created.
09:18:49 SQL>insert into d values('12/09/2002');
1 row created.
09:18:49 SQL>
09:18:49 SQL>commit;
Commit complete.
09:18:49 SQL>
09:18:49 SQL>select d, to_char(d,'mmrr')
09:18:49 2 from d
09:18:49 3 /
D TO_C
-------- ----
12/10/02 1202
12/15/02 1202
12/12/52 1252
12/09/02 1202
4 rows selected.
09:18:49 SQL>
09:18:49 SQL>select * from d where d between '12/01/02' and '12/31/02';
D
--------
12/09/02
1 row selected.
09:18:49 SQL>
09:18:49 SQL>select * from d where to_char(d,'mmrr')='1202';
D
--------
12/10/02
12/15/02
12/09/02
3 rows selected.
09:18:49 SQL>
09:18:49 SQL>spool off
09:18:49 SQL>
09:18:49 SQL>set echo off
09:18:49 SQL>
All explanations are in the fine manual.
Jared
Sony kristanto <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
01/14/2003 08:48 PM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
cc:
Subject: Date data type
Hi Listers,
Does the date data type is not consistence on oracleDB ?
I have the query below :
Create table test (dt date,
name varchar230));
SQL > Select * from test where dt between '01-DEC-02' and '31-DEC-02'
- it returns 22 rows selected
SQL > Select * from test where to_char(dt,'mmrr')='1202'
- it returns 26 rows selected
Why the last query return more rows selected than first query ? All
comment
would be appreciated.
TIA,
Sony
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