How to display the records based on user input

Question

Hi all,
On the front end, there are two date fileds, for example, start and end. Whenever user enters start date and end date, i want to display those dates starting from start date to
end date whatever the user enters.
For example, user enters Start date : 01/15/2012  and End date : 01/19/2012
I want to display like this *01/15/2012 01/16/2012 01/17/2012 01/18/2012 01/19/2012*
Thanks in advance.
Thanks,
Pal

Answer 1

Hello
You can generate a range of dates between two supplied variables with something like
var start_date varchar2(20)
var end_date varchar2(20)
exec :start_date:='01/15/2012';
exec :end_date:='01/19/2012';
SELECT
    TO_DATE(:start_date,'mm/dd/yyyy') + (rownum-1)
FROM
    dual
CONNECT BY
    LEVEL <= (TO_DATE(:end_date,'mm/dd/yyyy') - TO_DATE(:start_date,'mm/dd/yyyy') ) + 1
TO_DATE(:START_DATE,
15-JAN-2012 00:00:00
16-JAN-2012 00:00:00
17-JAN-2012 00:00:00
18-JAN-2012 00:00:00
19-JAN-2012 00:00:00If you want to have them in columns you'd need to set an upper limit for the number of dates and use a pivot
SELECT
    MAX(CASE WHEN date_idx = 1 THEN dt END) date1,
    MAX(CASE WHEN date_idx = 2 THEN dt END) date2,
    MAX(CASE WHEN date_idx = 3 THEN dt END) date3,
    MAX(CASE WHEN date_idx = 4 THEN dt END) date4,
    MAX(CASE WHEN date_idx = 5 THEN dt END) date5,
    MAX(CASE WHEN date_idx = 6 THEN dt END) date6,
    MAX(CASE WHEN date_idx = 7 THEN dt END) date7,
    MAX(CASE WHEN date_idx = 8 THEN dt END) date8,
    MAX(CASE WHEN date_idx = 9 THEN dt END) date9,
    MAX(CASE WHEN date_idx = 10 THEN dt END) date10
FROM
    (   SELECT
            rownum date_idx,
            TO_DATE(:start_date,'mm/dd/yyyy') + (rownum-1) dt
        FROM
            dual
        CONNECT BY
            LEVEL <= (TO_DATE(:end_date,'mm/dd/yyyy') - TO_DATE(:start_date,'mm/dd/yyyy') ) + 1
    ) Or failing that, you could use string aggregation like so...
WITH dates AS
(   SELECT
        TO_DATE(:start_date,'mm/dd/yyyy') + (rownum-1) dt
    FROM
        dual
    CONNECT BY
        LEVEL <= (TO_DATE(:end_date,'mm/dd/yyyy') - TO_DATE(:start_date,'mm/dd/yyyy') ) + 1
SELECT LTRIM(MAX(SYS_CONNECT_BY_PATH(TO_CHAR(dt,'mm/dd/yyyy'),' '))
       KEEP (DENSE_RANK LAST ORDER BY curr),',') AS dates
FROM   (SELECT dt,
               ROW_NUMBER() OVER (ORDER BY dt) AS curr,
               ROW_NUMBER() OVER (ORDER BY dt) -1 AS prev
        FROM   dates)
CONNECT BY prev = PRIOR curr
START WITH curr = 1
DATES
01/15/2012 01/16/2012 01/17/2012 01/18/2012 01/19/2012HTH
David