Generate linear dates betwen two dates

Question

Hi,
There are two dates as input. need to generate series of dates between those dates. Dates must appear in column wise
please suggest how to write the query on that.
Eg: If we enter two dates as start date 1-JAN-2011 and end date as 5-JAN-2010
It must generate a linear date as 1-JAN-2011 2-JAN-2011 3-JAN-2011 4-JAN-2011 5-JAN-2011
date must appear as column wise. P|lease let me know
Thanks
Sudhir

Answer 1

SQL> -- generating sample data:
SQL> with t as (
  2  select to_date('1-JAN-2011', 'dd-mon-yyyy') start_date
  3  ,      to_date('5-JAN-2011', 'dd-mon-yyyy') end_date
  4  from   dual
  5  )
  6  --
  7  -- actual query:
  8  --
  9  select max(decode(max(lvl), 1, dt)) dt1
10  ,      max(decode(max(lvl), 2, dt)) dt2
11  ,      max(decode(max(lvl), 3, dt)) dt3
12  ,      max(decode(max(lvl), 4, dt)) dt4
13  ,      max(decode(max(lvl), 5, dt)) dt5
14  from ( select start_date+level-1 dt
15         ,      level lvl
16         from   t
17         connect by level <= end_date-start_date+1
18       )
19  group by dt;
DT1                 DT2                 DT3                 DT4                 DT5
01-01-2011 00:00:00 02-01-2011 00:00:00 03-01-2011 00:00:00 04-01-2011 00:00:00 05-01-2011 00:00:00
1 row selected.
SQL> -- generating sample data:
SQL> with t as (
  2  select to_date('1-JAN-2011', 'dd-mon-yyyy') start_date
  3  ,      to_date('5-JAN-2011', 'dd-mon-yyyy') end_date
  4  from   dual
  5  )
  6  --
  7  -- actual query:
  8  --
  9  select max(decode(max(lvl), 1, dt)) dt1
10  ,      max(decode(max(lvl), 2, dt)) dt2
11  ,      max(decode(max(lvl), 3, dt)) dt3
12  ,      max(decode(max(lvl), 4, dt)) dt4
13  ,      max(decode(max(lvl), 5, dt)) dt5
14  from ( select start_date+level-1 dt
15         ,      level lvl
16         from   t
17         connect by level <= end_date-start_date+1
18       )
19  where to_char(dt, 'dy', 'nls_date_language=american') not in ('sat', 'sun')
20  group by dt;
DT1                 DT2                 DT3                 DT4                 DT5
                                        03-01-2011 00:00:00 04-01-2011 00:00:00 05-01-2011 00:00:00
1 row selected.