Select Last 7 days

Question

How can I select last 7 days from my table, I use query but it is calculating according to sysdate
It is the data of my talble
DP_DATE
03-APR-10
21-APR-10
22-APR-10
23-APR-10
26-APR-10
27-APR-10
28-APR-10
29-APR-10
30-APR-10
03-MAY-10
04-MAY-10
11 rows selected.
  select distinct dp_date
  from dailyprice
  where trunc(dp_date) between trunc(sysdate-7) and trunc(sysdate)
this query is returning
DP_DATE
29-APR-10
30-APR-10
03-MAY-10
04-MAY-10I want to select last 7 days
26-APR-10
27-APR-10
28-APR-10
29-APR-10
30-APR-10
03-MAY-10
04-MAY-10
kindly guide
regards

Answer 1

Hi,
Kame wrote:
with t
as
select 'abcFund' FND , to_date('09-MAY-10','dd-mon-rr') dpdate, 10 price from dual union all
select 'dddFund', to_date('09-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('09-MAY-10','dd-mon-rr'), 12 from dual union all
select 'edfFund', to_date('09-MAY-10','dd-mon-rr'), 12 from dual union all
select 'eeeFund', to_date('09-MAY-10','dd-mon-rr'), 12 from dual union all
select 'dddFund', to_date('08-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('08-MAY-10','dd-mon-rr'), 12 from dual union all
select 'edfFund', to_date('08-MAY-10','dd-mon-rr'), 12 from dual union all
select 'eeeFund', to_date('08-MAY-10','dd-mon-rr'), 12 from dual union all
select 'eeeFund', to_date('08-MAY-10','dd-mon-rr'), 12 from dual union all
select 'dddFund', to_date('07-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('07-MAY-10','dd-mon-rr'), 12 from dual union all
select 'edfFund', to_date('07-MAY-10','dd-mon-rr'), 12 from dual union all
select 'edfFund', to_date('05-MAY-10','dd-mon-rr'), 11 from dual union all
select 'dddFund', to_date('05-MAY-10','dd-mon-rr'), 12 from dual union all
select 'eeeFund', to_date('05-MAY-10','dd-mon-rr'), 12 from dual union all
select 'dddFund', to_date('04-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('04-MAY-10','dd-mon-rr'), 12 from dual union all
select 'dddFund', to_date('03-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('03-MAY-10','dd-mon-rr'), 12 from dual union all
select 'edfFund', to_date('03-MAY-10','dd-mon-rr'), 12 from dual union all
select 'eeeFund', to_date('03-MAY-10','dd-mon-rr'), 12 from dual union all
select 'dddFund', to_date('01-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('01-MAY-10','dd-mon-rr'), 12 from dual union all
select 'abcFund', to_date('30-APR-10','dd-mon-rr'), 11 from dual
)Hot to get my result from this data.What result is that?
Do you mean what you posted in your first message?
I want to select last 7 days
26-APR-10
27-APR-10
28-APR-10
29-APR-10
30-APR-10
03-MAY-10
04-MAY-10The last thing I saw posted
this query will not work in this situation
select dp_date
from ( select dp_date
, row_number() over (order by dp_date desc) rn
from mytable
where rn <= 7ROW_NUMBER will get the 7 most recent rows , whether they all have the same dp_date, 7 different dp_dates, or anything in between.
DENSE_RANK will get the 7 most recent values , whether they come from 7 rows or more.
select DISTINCT
     dp_date
from      (
          select      dp_date
          ,     DENSE_RANK () over (order by dp_date desc)      AS rn
          from      mytable
where      rn     <= 7If you want the 7 most recent calendar days, then use TRUNC (dp_dtate) in the analytic function:
DENSE_RANK () over (order by TRUNC (dp_date) desc)      AS rnThis will count (for example) these 3 distinct DATE values:
6-May-2010 07:00
6-May-2010 08:10
6-May-2010 23:59
all as one value.