Current Quarter & Semi Annual Start Dates

Question

Hi,
Generally financial year end will be 31st Dec. I have a situation where financial year end can be last day of any of the 12 months in a year. So based on that the quarter start dates, semi annual start dates vary.
Example: Financial Year End Date is 31-AUG-2008
Quarters
01-Sep-2007 to 30-Nov-2007
01-Dec-2007 to 29-Feb-2008
01-Mar-2008 to 31-May-2008
01-Jun-2008 to 31-Aug-2008
Semi Annual Start Dates
01-Sep-2007
01-Mar-2008
I have the following query to find the Quarter Start Dates no matter what month does the financial year end falls in
SELECT ADD_MONTHS (TRUNC (SYSDATE, 'MM'),
                     MOD (TO_CHAR (TO_DATE (<current fiscal year end>, 'DD-MON-YYYY'),
                                   'MM'
                          3
                   - 2
  FROM DUAL;
Example:
SELECT ADD_MONTHS (TRUNC (SYSDATE, 'MM'),
                     MOD (TO_CHAR (TO_DATE ('31-AUG-2008', 'DD-MON-YYYY'),
                                   'MM'
                          3
                   - 2
  FROM DUAL;
ADD_MONTHS(
01-MAR-2008Likewise I am trying to write a query to find the Semi Annual Start Dates. Can any one help me with this.
Thanks

Answer 1

Pratz, I have the following solution similar to yours.
create or replace function semi_annual_start_date(
     curr_fiscal_year_end DATE
     RETURN DATE
IS
     p_date DATE := NULL;
BEGIN
     p_date := ADD_MONTHS (curr_fiscal_year_end, -6);
     IF sysdate > p_date
     THEN
        RETURN (p_date + 1);
     ELSE
        RETURN (ADD_MONTHS(curr_fiscal_year_end, -12) + 1);
     END IF;
END;
/I am trying to implement this in a single SELECT query (if possible) something similar to the Quarter Start Date Solution given in my last post.
Can you help me in achieving this. Thanks for the help.