get the last day of the week

Hi friends,

I have the below query that returns me the data as below:

Select 'Label', to_number (to_char (to_date(start_date,'yyyy-mm-dd'), 'IW')) - to_number (to_char (add_months (sysdate,-6), 'IW')) + 1 as a weekly sum, (col1) val yyy_view
where to_date(start_dt,'yyyy-mm-dd') between trunc (add_months(sysdate,-6)) and trunc (sysdate)
Group of to_char (to_date(start_date,'yyyy-mm-dd'), 'IW')
order of to_char (to_date(start_date,'yyyy-mm-dd'), 'IW')

Label weekly val
1 20 data
2 24 data
3 20 data
4 28 data
5 20 data
6 24 data

and so on...

Now the requirement is to get the last date of the week for each week as below

Label weekly val
given 2011-08-30 20
given 2011-08-23 24
given 2011-08-16 20
given 28 2011-08-09
given 2011-08-02 20

the weekly column should have the date of the last week. In the example above Wednesday is supposed to be the last date of the week.

Kind regards
Pradeep

Missed the part "Wednesday is considered date of last week. The week is Thursday to Wednesday. If so:

select  'Label',
         trunc(min(start_dt)) as day2,
        sum(col1 ) val
  from  yyy_view
  where start_dt between trunc(add_months(sysdate,-6)) and trunc(sysdate)
  group by trunc(start_date - 3,'IW')
  order by trunc(start_date - 3,'IW')
/

SY.

Tags: Database

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