Order by desc or asc is not working with rownum

Question

SQL> desc offer
Name                                      Null?    Type
OFFER_ID                                  NOT NULL NUMBER(14)
DOMAIN_ID                                          NUMBER(14)
OFFERDATE                                          TIMESTAMP(0)
CONTACTPERSON                                      VARCHAR2(36)
EMAIL                                              VARCHAR2(50)
TEL                                                VARCHAR2(23)
CATEGORY                                           NUMBER(2)
AMOUNT                                             NUMBER(5)
STATUS                                             NUMBER(2)
SQL> ed
Wrote file afiedt.buf
  1  select to_char(offerdate,'dd-Mon-yyyy'),
  2     offer_id,
  3     amount
  4  from
  5     offer
  6  where
  7     domain_id=1
  8     and amount is not null
  9* order by offerdate desc
SQL> /
TO_CHAR(OFF   OFFER_ID     AMOUNT
27-Apr-2010          4         55
26-Apr-2010          5         45
26-Apr-2010          3         50
26-Apr-2010          2         45
/*****These may be Ten thousand rows*****/When am adding rownum<2 order by asc or desc in my query then it is not working.
SQL> ed
Wrote file afiedt.buf
  1  select to_char(offerdate,'dd-Mon-yyyy'),
  2     offer_id,
  3     amount
  4  from
  5     offer
  6  where
  7     domain_id=1
  8     and amount is not null
  9  and
10     rownum<2
11* order by offerdate desc
SQL> /
TO_CHAR(OFF   OFFER_ID     AMOUNT
26-Apr-2010          5         45
SQL> ed
Wrote file afiedt.buf
  1  select to_char(offerdate,'dd-Mon-yyyy'),
  2     offer_id,
  3     amount
  4  from
  5     offer
  6  where
  7     domain_id=1
  8     and amount is not null
  9  and
10     rownum<2
11* order by offerdate asc
SQL> /
TO_CHAR(OFF   OFFER_ID     AMOUNT
26-Apr-2010          5         45I want to simply display one latest record from DB offerDate wise
Thanks in anticipation

Answer 1

Try this
select to_char(offerdate,'dd-Mon-yyyy'),
       offer_id,
       amount
    from(
    select to_char(offerdate,'dd-Mon-yyyy'),
       offer_id,
       amount
    from
       offer
    where
       domain_id=1
       and amount is not null
       order by offerdate asc)
where  rownum<2Edited by: user12984479 on Apr 27, 2010 4:34 AM