-- create table
create table temp_calendar (
month varchar2(6),
w_7 varchar2(2),
w_1 varchar2(2),
w_2 varchar2(2),
w_3 varchar2(2),
w_4 varchar2(2),
w_5 varchar2(2),
w_6 varchar2(2),
week varchar2(20)
) ;-- add comments to the table
comment on table temp_calendar
is '日期源資料表';
-- add comments to the columns
comment on column temp_calendar.month
is '月份(格式如:200801)';
comment on column temp_calendar.w_7
is '週日的日期(如:06)';
comment on column temp_calendar.w_1
is '周一(如:07)';
comment on column temp_calendar.w_2
is '周二(如:08)';
comment on column temp_calendar.w_3
is '週三(如:09)';
comment on column temp_calendar.w_4
is '周四(如:10)';
comment on column temp_calendar.w_5
is '周五(如:11)';
comment on column temp_calendar.w_6
is '週六(如:12)';
comment on column temp_calendar.week
is '本月第幾周';
----生成 日曆資訊
-- truncate table calendar;
declare
vi_begin_year number(6);
vi_end_year number(6);
vi_year number(6);
vi_month number(6);
vs_month varchar2(6);
vs_first_day varchar2(8);
begin
vi_begin_year :=2000; ---start year
vi_end_year :=2100; --- end year
vi_month :=1;
vi_year := vi_begin_year;
loop exit when(vi_year > vi_end_year);
for i in 1..12 loop
if length(i) =1 then
vs_month := to_char(vi_year)||'0'||to_char(i);
else
vs_month := to_char(vi_year)||to_char(i);
end if;
vs_first_day := vs_month||'01';
insert into temp_calendar ( month, week,w_7, w_1, w_2, w_3, w_4, w_5, w_6 )
select substr(vs_first_day,1,6) month,
ceil((to_char(everyday,'dd')+(to_char(to_date(vs_first_day,'yyyymmdd'),'d')-1))/7) as week,
sum(decode(to_char(everyday,'dy'),'星期日',to_char(everyday,'dd'))) as 星期日,
sum(decode(to_char(everyday,'dy'),'星期一',to_char(everyday,'dd'))) as 星期一,
sum(decode(to_char(everyday,'dy'),'星期二',to_char(everyday,'dd'))) as 星期二,
sum(decode(to_char(everyday,'dy'),'星期三',to_char(everyday,'dd'))) as 星期三,
sum(decode(to_char(everyday,'dy'),'星期四',to_char(everyday,'dd'))) as 星期四,
sum(decode(to_char(everyday,'dy'),'星期五',to_char(everyday,'dd'))) as 星期五,
sum(decode(to_char(everyday,'dy'),'星期六',to_char(everyday,'dd'))) as 星期六
from(
select to_date(vs_first_day,'yyyymmdd') + level - 1 as everyday
from dual
connect by level <= (last_day(to_date(vs_first_day,'yyyymmdd'))
- to_date(vs_first_day,'yyyymmdd') +1) )
group by ceil((to_char(everyday,'dd')+(to_char(to_date(vs_first_day,'yyyymmdd'),'d')-1))/7) ;
commit;
end loop;
vi_year := vi_year+1;
end loop;
end;
order by a.year,a.month, a.week;
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