Calendar Table

Question

Does anyone know the best way to set up a calendar table? We will need a way to account for weekends and holidays when determining work days. I have been searching for some pl/sql code to do this. We are currently not using any other calendaring or using with forms. Needed mainly for reporting issues.
Please let me know if you have any ideas for me.
thanks,
Toni

Answer 1

Here is an an example using the holiday table combined with the this_year view in the previous example.
SQL> create table holiday (holiday date,
  2    country varchar2(2), description varchar2(30));
Table created.
SQL> insert into holiday values (date '2006-01-23', 'NL',
  2    'National Cheese Day');
1 row created.
SQL> select day, weekend, description holiday,
  2    case when weekend = 'N' and holiday is null then
  3      'Y' else 'N' end business_day
  4  from this_year, holiday
  5  where day between sysdate - 5 and sysdate + 5
  6    and day = holiday (+)
  7  order by day;
DAY       WEEKEND HOLIDAY                        BUSINESS_DAY
19-JAN-06 N                                      Y
20-JAN-06 N                                      Y
21-JAN-06 Y                                      N
22-JAN-06 Y                                      N
23-JAN-06 N       National Cheese Day            N
24-JAN-06 N                                      Y
25-JAN-06 N                                      Y
26-JAN-06 N                                      Y
27-JAN-06 N                                      Y
28-JAN-06 Y                                      N
10 rows selected.
SQL>