Regarding large date range

Question

hi all,
i am using Forms [32 Bit] Version 6.0.8.24.1 (Production)
Oracle Database 10g Release 10.2.0.1.0 - Production
i am selecting some fileds from some tables for certain condition
for ex:
select a,b,c
from table1
where trunc(col) between from_date and to_date
with the help of cursor i am accessing these selected columns.
the problem is if i run it for small date range(from 01-jan-2009 to 10-jan-2009) its giving the correct result but if i run it for large date range for example 2005 to 2011 i am getting error as ora-302000.
i have written this code in the button in the front end.
what could be the reason behind this?
Please help to sort it out..
Thanks..

Answer 1

I appreciate your views. However here is why it works...
The default date format is DD-MON-RR (RR Date Format)
Oracle does an implicit convertion from CHAR to DATE when we specify in this format 'DD-MON-RR'
Here is how it works...
SELECT * FROM EMP WHERE TRUNC(HIREDATE) = '17-DEC-80'This SQL will give me this record from emp table
SQL> SELECT * FROM EMP WHERE TRUNC(HIREDATE) = '17-DEC-80';
EMPNO     ENAME     JOB     MGR     HIREDATE     SAL     COMM     DEPTNO
7369     SMITH     CLERK     7902     17-12-1980     800          20Regarding, specifying 2 digits for the year. Oracle is intelligent enough to decode it based on its built-in internal functionality...
Quoting from Oracle Docs..
•If the specified two-digit year is 00 to 49, then
    ◦If the last two digits of the current year are 00 to 49, then the returned year has the same first two digits as the current year.
    ◦If the last two digits of the current year are 50 to 99, then the first 2 digits of the returned year are 1 greater than the first 2 digits of the current year.
•If the specified two-digit year is 50 to 99, then
    ◦If the last two digits of the current year are 00 to 49, then the first 2 digits of the returned year are 1 less than the first 2 digits of the current year.
    ◦If the last two digits of the current year are 50 to 99, then the returned year has the same first two digits as the current year.To know more about implicit year decoding you can refer this.
Look for The RR Datetime Format Element at this page http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/sql_elements004.htm#SQLRF00210
Regards,
Rakesh
Edited by: Rakesh Desai on Mar 28, 2011 8:11 PM