Month-wise break.

Question

Hi,
I have a requirement as follows :-
The user will submit the start date and end date. Based on the date parameters, the customized procedure should do some calculations month-wise.
For eg : start date - 01-Dec-2012 to end date - 31-Mar-2013
I want the break up as
Start date End date
01-dec-2012 31-dec-2012
01-jan-2013 31-jan-2013
01-feb-2013 28-feb-2013
01-mar-2013 31-mar-2013
How can i achieve this month-wise break ?
Regards,

Answer 1

Hi,
There are no DATE bind variables, at least not in SQL*Plus.
You can use VARCHAR2s to pass the start and end dates, like this:
VARIABLE  start_date     VARCHAR2 (11)
VARIABLE  end_date     VARCHAR2 (11)
EXEC     :start_date := '02-Dec-2012';
EXEC      :end_date   := '31-Mar-2013';
WITH      got_months   AS
     SELECT  TRUNC ( TO_DATE (:start_date, 'DD-Mon-YYYY')
                , 'MONTH'
                )          AS first_month
     ,       TRUNC ( TO_DATE (:end_date,   'DD-Mon-YYYY')
                , 'MONTH'
                )          AS last_month
     FROM    dual
SELECT     ADD_MONTHS (first_month, LEVEL - 1)     AS month_start
,     ADD_MONTHS (first_month, LEVEL    ) - 1     AS month_end
FROM     got_months
CONNECT BY     LEVEL     <= 1 + MONTHS_BETWEEN ( last_month
                                      , first_month
;Output:
MONTH_START MONTH_END
01-Dec-2012 31-Dec-2012
01-Jan-2013 31-Jan-2013
01-Feb-2013 28-Feb-2013
01-Mar-2013 31-Mar-2013