Hourly Running Total

Question

Hi experts,
Need your expert helping hand for one of the reports I am currently working on.
This report runs every hour 12:00, 13:00 ... so on and the requirement is to produce Running Total of Stock_Shortages every hour.
As of now I had the requirement to produce just the hourly figures for which I used the following query
SELECT
to_char(SALES_ORDER_HEADER.SOH_DATE_RELEASED,'dd/mm/yyyy') as RELEASED_DATE,
substr(to_char(SALES_ORDER_HEADER.SOH_TIME_RELEASED,'HH24:MI:SS'),1,2) as RELEASED_TIME,
SOH_CLASS as CLASS,
count(SALES_ORDER_HEADER.SOH_ORDER_NO) as Stock_Shortage
FROM
COM.SALES_ORDER_HEADER SALES_ORDER_HEADER
WHERE
SOH_STATUS ='05'
AND SOH_DATE_RELEASED = TRUNC(SYSDATE)
AND substr(to_char(SALES_ORDER_HEADER.SOH_TIME_RELEASED,'HH24:MI:SS'),1,2) < substr(to_char(sysdate,'HH24:MI:SS'),1,2)
GROUP BY
to_char(SALES_ORDER_HEADER.SOH_DATE_RELEASED,'dd/mm/yyyy'),
substr(to_char(SALES_ORDER_HEADER.SOH_TIME_RELEASED,'HH24:MI:SS'),1,2)
How can I amend this query to show the cumulative total of Stock_Shortage at the end of each hour ?
Plssss help....

Answer 1

Something like this, perhaps?
with my_table as (select 1 id, to_date('30/09/2009 12:15:43', 'dd/mm/yyyy hh24:mi:ss') dt, 10 amt from dual union all
                  select 1 id, to_date('30/09/2009 14:26:42', 'dd/mm/yyyy hh24:mi:ss') dt, 20 amt from dual union all
                  select 1 id, to_date('30/09/2009 14:35:36', 'dd/mm/yyyy hh24:mi:ss') dt, 30 amt from dual union all
                  select 1 id, to_date('30/09/2009 15:06:32', 'dd/mm/yyyy hh24:mi:ss') dt, 40 amt from dual union all
                  select 1 id, to_date('30/09/2009 15:59:43', 'dd/mm/yyyy hh24:mi:ss') dt, 50 amt from dual union all
                  select 2 id, to_date('30/09/2009 12:23:31', 'dd/mm/yyyy hh24:mi:ss') dt, 60 amt from dual union all
                  select 2 id, to_date('30/09/2009 12:49:19', 'dd/mm/yyyy hh24:mi:ss') dt, 70 amt from dual union all
                  select 2 id, to_date('30/09/2009 16:42:06', 'dd/mm/yyyy hh24:mi:ss') dt, 80 amt from dual union all
                  select 3 id, to_date('30/09/2009 14:35:21', 'dd/mm/yyyy hh24:mi:ss') dt, 90 amt from dual union all
                  select 3 id, to_date('30/09/2009 14:58:20', 'dd/mm/yyyy hh24:mi:ss') dt, 100 amt from dual union all
                  select 4 id, to_date('30/09/2009 17:05:49', 'dd/mm/yyyy hh24:mi:ss') dt, 110 amt from dual),
      results as (select id,
                         trunc(dt, 'hh24') by_hour,
                         sum(amt) over (partition by id order by trunc(dt, 'hh24')) running_total
                  from   my_table)
select id,
       to_char(by_hour, 'dd/mm/yyyy hh24:mi:ss') by_hour,
       running_total,
       count(id) total_amt
from   results
group by id,
         by_hour,
         running_total
order by id,
         by_hour;
        ID BY_HOUR             RUNNING_TOTAL  TOTAL_AMT
         1 30/09/2009 12:00:00            10          1
         1 30/09/2009 14:00:00            60          2
         1 30/09/2009 15:00:00           150          2
         2 30/09/2009 12:00:00           130          2
         2 30/09/2009 16:00:00           210          1
         3 30/09/2009 14:00:00           190          2
         4 30/09/2009 17:00:00           110          1