nls_date_format in 8.1.6

From: Oracle DBA <oradba_at_tubes.tatasteel.com>
Date: Sat, 05 Jan 2002 04:53:33 -0800
Message-ID: <F001.003E7C52.20020105043518@fatcity.com>

we have set nls_date_format to dd-mm-yyyy in parameter file .

but all the funtions which have some hard coded date value in the format of dd-mm-yyyy
are giving "not a valid month error"

example is
create or replace function test_bkj(t_date date) return varchar2
is
begin
 if (t_date < '12-12-2001')
 then

    t_retval := 'Less Than';
 else

    t_retval := 'Greater Than';
 end if;
return t_retval;
end;

 SQL> select test_bkj('12-12-2001') from dual;  select test_bkj('12-12-2001') from dual

       *
ERROR at line 1:

ORA-01843: not a valid month
ORA-06512: at "AVLMKT.TEST_BKJ", line 6
ORA-06512: at line 1

when we change the date format in funtion to 'dd/MON/yyyy' keeping the nls_date_format to 'dd-mm-yyyy'
we are getting wrong results from function . create or replace function test_bkj(t_date date) return varchar2
is
begin
 if (t_date < '12-DEC-2001')
 then

    t_retval := 'Less Than';
 else

    t_retval := 'Greater Than';
 end if;
return t_retval;
end;

 SQL> select test_bkj('31-12-2001') from dual;

TEST_BKJ('31/12/2001')

---

---

Less Than

while the results should have been "Greater than" . ............(pl see the if-else condition )
its giving "Less Than" for any date comparison.

Pl help .

Thanks in advance

Brajesh Jaiswal

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Author: Oracle DBA
  INET: oradba_at_tubes.tatasteel.com

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