DATE QUERY (Need to find the financial dates)

Question

**I want to get the first and last financial dates of any year when i enter some date**
Say, If i enter today's date "07-aug-2012", The query should written me the financial dates are 01-apr-2012 to 31-mar-2013
And Note : That query should written me the financial dates of any year. (" not only this year alone ")
Is there any possibility to find query for this?
Shoot me if possible!!!

Answer 1

with t as (
           select trunc(add_months(date '&enter_date',-3),'YYYY') fiscal_year from dual
select to_char(add_months(fiscal_year,3),'DD-MON-YYYY') fiscal_year_start,
       to_char(add_months(fiscal_year,15) - 1,'DD-MON-YYYY') fiscal_year_end
  from t
/ For example:
SQL> with t as (
  2             select trunc(add_months(date '&enter_date',-3),'YYYY') fiscal_year from dual
  3            )
  4  select to_char(add_months(fiscal_year,3),'DD-MON-YYYY') fiscal_year_start,
  5         to_char(add_months(fiscal_year,15) - 1,'DD-MON-YYYY') fiscal_year_end
  6    from t
  7  /
Enter value for enter_date: 2012-08-07
old   2:            select trunc(add_months(date '&enter_date',-3),'YYYY') fiscal_year from dual
new   2:            select trunc(add_months(date '2012-08-07',-3),'YYYY') fiscal_year from dual
FISCAL_YEAR FISCAL_YEAR
01-APR-2012 31-MAR-2013
SQL> /
Enter value for enter_date: 2013-03-31
old   2:            select trunc(add_months(date '&enter_date',-3),'YYYY') fiscal_year from dual
new   2:            select trunc(add_months(date '2013-03-31',-3),'YYYY') fiscal_year from dual
FISCAL_YEAR FISCAL_YEAR
01-APR-2012 31-MAR-2013
SQL> /
Enter value for enter_date: 2013-04-01
old   2:            select trunc(add_months(date '&enter_date',-3),'YYYY') fiscal_year from dual
new   2:            select trunc(add_months(date '2013-04-01',-3),'YYYY') fiscal_year from dual
FISCAL_YEAR FISCAL_YEAR
01-APR-2013 31-MAR-2014
SQL> SY.