Generating 52 weeks number of a year associated to a date

Question

hi
I try to generate the 52 weeks number of a year associated to the date of the first monday of the week
For example 1 (week number 1) would be associated to the first monday on the first week of the year.
Week 2 associated to the secondth week of the year, adn so on. The result would be to columns :
Number of the wee and its corresponding date of the monday :
Number_of_the_week----DATE
1----------------------------01/01/2008
2----------------------------14/01/2008
...... etc....
52---------------------------29/12/2008
The request should be something including the year in a "select .(something)... from dual"
Could you suggest me something ?
Thank you for your kind answers !Christian

Answer 1

Christian from France wrote:
It is not so bad except that each date falls on the tuesday instead of the monday of the week. Hmmm, I don't remember you specifying that in your initial requirements.
SQL> ed
Wrote file afiedt.buf
  1  with t as (select 2009 as yr from dual)
  2      ,off as (select to_number(to_char(trunc(to_date(yr,'YYYY'),'YYYY'),'D'))-1 as offset from t)
  3  select rownum as week, trunc(to_date(t.yr,'YYYY'),'YYYY')+((rownum-1)*7)-decode(rownum,1,0,off.offset) as dt
  4  from t, off
  5* connect by rownum <= 53
SQL> /
      WEEK DT
         1 01-JAN-09
         2 05-JAN-09
         3 12-JAN-09
         4 19-JAN-09
         5 26-JAN-09
         6 02-FEB-09
         7 09-FEB-09
         8 16-FEB-09
         9 23-FEB-09
        10 02-MAR-09
        11 09-MAR-09
        12 16-MAR-09
        13 23-MAR-09
        14 30-MAR-09
        15 06-APR-09
        16 13-APR-09
        17 20-APR-09
        18 27-APR-09
        19 04-MAY-09
        20 11-MAY-09
        21 18-MAY-09
        22 25-MAY-09
        23 01-JUN-09
        24 08-JUN-09
        25 15-JUN-09
        26 22-JUN-09
        27 29-JUN-09
        28 06-JUL-09
        29 13-JUL-09
        30 20-JUL-09
        31 27-JUL-09
        32 03-AUG-09
        33 10-AUG-09
        34 17-AUG-09
        35 24-AUG-09
        36 31-AUG-09
        37 07-SEP-09
        38 14-SEP-09
        39 21-SEP-09
        40 28-SEP-09
        41 05-OCT-09
        42 12-OCT-09
        43 19-OCT-09
        44 26-OCT-09
        45 02-NOV-09
        46 09-NOV-09
        47 16-NOV-09
        48 23-NOV-09
        49 30-NOV-09
        50 07-DEC-09
        51 14-DEC-09
        52 21-DEC-09
        53 28-DEC-09
53 rows selected.
SQL>