从SQL中的日期获取星期

Question

I want to how i can split the month into respective weeks based on the user entry, like from 1day of the month or by first week of the week.

example: if user wants data based on 1day of the month ie, 01-06-2012 then

jun'2012 1/6-7/6 8/6-14/6 15/6-21/6 22/6-28/6 29/6-30/6

if the user wants according to first week ie, 4-6-2012

jun-2012 4-10 11-17 18-24
i think this will be a fiscal week

can anyone please tell me how i can get this?

and how to get the complete week based on the given date

Answer 1

This could give u an idea,

declare
vdate date := sysdate;  
temp  Date;
begin
temp  :=  VDate;
WHILE last_day(temp) >=  vDate
LOOP
   dbms_output.put_line(to_char(vDate));
   vDate := vDate+7;
END LOOP;
end;

end;

The result will be starting from to day (10th Dec 2012) to the last day of this week

    10-DEC-12
    17-DEC-12
    24-DEC-12
    .....