Generating the last day of the week

Question

HI All,
I have the Year value (for eg 2002, 2006) and the week number value in the year ( for eg : 32, 52) . Based on this information, how can I get the last day of the particular week.
for eg What is the last day of the week - 2002,32
Any pointer would be great.
Thanks and Regards
Venkat

Answer 1

Or try this:
SQL> WITH t AS
     (SELECT 2006 YEAR, 1 week
        FROM DUAL
      UNION ALL
      SELECT 2002 YEAR, 32 week
        FROM DUAL
      UNION ALL
      SELECT 2005 YEAR, 52 week
        FROM DUAL
      UNION ALL
      SELECT 2006 YEAR, 52 week
        FROM DUAL)
SELECT YEAR,
       week,
       CASE
          WHEN TO_CHAR (TRUNC (TO_DATE (YEAR, 'RR'), 'RR'), 'IW') != 1
             THEN TRUNC (TRUNC (TO_DATE (YEAR, 'RR'), 'RR') + 7, 'IW')
          ELSE TRUNC (TRUNC (TO_DATE (YEAR, 'RR'), 'RR'), 'IW')
       END
       + 6 + (week - 1) * 7 LAST_DAY
  FROM t
                                              YEAR                                               WEEK LAST_DAY
                                              2006                                                  1 08-JAN-06
                                              2002                                                 32 11-AUG-02
                                              2005                                                 52 01-JAN-06
                                              2006                                                 52 31-DEZ-06
4 rows selected.