Query to get the date from to

Question

hello anyone,
How can I create a query having 2 date and 2 variable of kind:
from 1 date 05/06/2004
to   2 date 15/06/2004
yes for 2 days
no for  1 day
that is,
i wish get the date with yes for 2 days and not for 1 day, this is, that I want
05/06/2004 sabato
06/06/2004 domenica
08/06/2004 martedì
09/06/2004 mercoledi
11/06/2004 venerdi
12/06/2004 sabato 
14/06/2004 lunedi
15/06/2004 martedithanks in advance

Answer 1

Hi,
The WHERE clause controls which rows will be displayed.
If your requirements change, change the WHERE clause to reflect them.
For example:
DEFINE     from_date     = "TO_DATE ('05/06/2004', 'DD/MM/YYYY')"
DEFINE     to_date          = "TO_DATE ('15/06/2004', 'DD/MM/YYYY')"
DEFINE     yes_cnt          = 3
DEFINE     no_cnt          = 2
SELECT  &from_date + LEVEL - 1        AS dt
FROM     dual
WHERE     MOD ( LEVEL
         , &yes_cnt + &no_cnt
         )          BETWEEN  1
                   AND      &yes_cnt
CONNECT BY  LEVEL <= 1 + &to_date
                     - &from_date
ORDER BY  dt;This will work as long as you want the first &yes_cnt rows to be displayed (assuming there are that many), and the next &no_cnt rows not to be displayed, then another &yes_cnt rows to be displayed and another &no_cnt rows not to be displayed, and so on.
I assume that &yes_cnt is a postive integer, and that &no_cnt is a non-negative integer. (That is, &no_cnt may be 0.)