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Rolling sums (?)

From: Jack van Zanen <nlzanen1_at_EY.NL>
Date: Thu, 15 Aug 2002 05:13:23 -0800
Message-ID: <F001.004B5CC5.20020815051323@fatcity.com> 





Maybe having a bad hairday but following code will give me for every period
number the sum of all work in progress for the period plus the previous 12
periods. Basically it takes the period number from the current record and
sums a column of that record with the previous 12 periods.


year  period      value
2000  1     1
2000  2     2
2000  3     3
2000  4     4
2000  5     5
2000  6     6
2000  7     7
2000  8     8
2000  9     9




2000  10    10


2000  11    11


2000  12    12

2001  1     13
2001  2     14
2001  3     15





So for period 2001 1 I need the values 1 thru 13  added together (91)
Period 2001 2 needs to be the values 2 thru 14 added together (104)
etc....



As you maybe can imagine the explain plan for this baby is 4 full
tablescans on quite large tables. (see below)



My question is if somebody has a better solution to handle this query?????



Oracle 8.0.5 !!!


AIX 4.3.3




SELECT      V1.ENGAGEMENT


,     V1.YEAR

,     V1.PERIOD

,     MAX(V1.NET_FEE_EARNED_PTD)

,     MAX(V1.EXP_WIP_VAL_PTD)

,     SUM(V2.TIME_WIP_VAL)

,     MAX(V1.GNRL_WON)

,     MAX(V1.GNRL_WOFF)

,     MAX(V1.TIME_WOFF)

,     MAX(V1.WIP_PROV)

,     MAX(V1.EXP_WOFF)

,     MAX(V1.DB_WOFF)

,     MAX(V1.DB_PROV)





FROM



(

select            max(WSTAT.ENG_NUMB) AS ENGAGEMENT,
            max(WSTAT.FNANCL_YEAR) AS YEAR,
            max(WSTAT.PRD_NUMB) AS PERIOD,
            SUM(NVL(WSTAT.TIME_WIP_VAL_PTD, 0))
            + SUM(NVL(WSTAT.GNRL_W_ON_PTD, 0))
            - SUM(NVL(WSTAT.GNRL_W_OFF_PTD, 0))
            - SUM(NVL(WSTAT.TIME_WIP_VAL_W_OFF_PTD, 0))
            - SUM(NVL(WSTAT.WIP_PRVSN_PTD, 0))
            - SUM(NVL(WSTAT.EXP_WIP_VAL_W_OFF_PTD, 0))
            - SUM(NVL(DSTAT.DBTRS_W_OFF_PTD, 0))
            - SUM(NVL(DSTAT.DBTRS_PRVSN_PTD, 0))  NET_FEE_EARNED_PTD,
            SUM(NVL(WSTAT.EXP_WIP_VAL_PTD,0)) EXP_WIP_VAL_PTD,
            SUM(NVL(WSTAT.TIME_WIP_VAL_PTD, 0)) TIME_WIP_VAL,
            SUM(NVL(WSTAT.GNRL_W_ON_PTD, 0)) GNRL_WON,
            SUM(NVL(WSTAT.GNRL_W_OFF_PTD, 0)) GNRL_WOFF,
            SUM(NVL(WSTAT.TIME_WIP_VAL_W_OFF_PTD, 0)) TIME_WOFF,
            SUM(NVL(WSTAT.WIP_PRVSN_PTD, 0)) WIP_PROV,
            SUM(NVL(WSTAT.EXP_WIP_VAL_W_OFF_PTD, 0)) EXP_WOFF,
            SUM(NVL(DSTAT.DBTRS_W_OFF_PTD, 0)) DB_WOFF,
            SUM(NVL(DSTAT.DBTRS_PRVSN_PTD, 0)) DB_PROV
FROM        ENG_WIP_STATS WSTAT,
            ENG_DBTRS_STATS DSTAT
WHERE             WSTAT.ENG_NUMB(+)=DSTAT.ENG_NUMB
AND         WSTAT.FNANCL_YEAR=DSTAT.FNANCL_YEAR
AND         WSTAT.PRD_NUMB=DSTAT.PRD_NUMB
GROUP BY    WSTAT.ENG_NUMB,
            WSTAT.FNANCL_YEAR,
            WSTAT.PRD_NUMB




) v1,


(

select            max(WSTAT.ENG_NUMB) AS ENGAGEMENT,
            max(WSTAT.FNANCL_YEAR) AS YEAR,
            max(WSTAT.PRD_NUMB) AS PERIOD,
            SUM(NVL(WSTAT.TIME_WIP_VAL_PTD, 0))
            + SUM(NVL(WSTAT.GNRL_W_ON_PTD, 0))
            - SUM(NVL(WSTAT.GNRL_W_OFF_PTD, 0))
            - SUM(NVL(WSTAT.TIME_WIP_VAL_W_OFF_PTD, 0))
            - SUM(NVL(WSTAT.WIP_PRVSN_PTD, 0))
            - SUM(NVL(WSTAT.EXP_WIP_VAL_W_OFF_PTD, 0))
            - SUM(NVL(DSTAT.DBTRS_W_OFF_PTD, 0))
            - SUM(NVL(DSTAT.DBTRS_PRVSN_PTD, 0))  NET_FEE_EARNED_PTD,
            SUM(NVL(WSTAT.EXP_WIP_VAL_PTD,0)) EXP_WIP_VAL_PTD,
            SUM(NVL(WSTAT.TIME_WIP_VAL_PTD, 0)) TIME_WIP_VAL,
            SUM(NVL(WSTAT.GNRL_W_ON_PTD, 0)) GNRL_WON,
            SUM(NVL(WSTAT.GNRL_W_OFF_PTD, 0)) GNRL_WOFF,
            SUM(NVL(WSTAT.TIME_WIP_VAL_W_OFF_PTD, 0)) TIME_WOFF,
            SUM(NVL(WSTAT.WIP_PRVSN_PTD, 0)) WIP_PROV,
            SUM(NVL(WSTAT.EXP_WIP_VAL_W_OFF_PTD, 0)) EXP_WOFF,
            SUM(NVL(DSTAT.DBTRS_W_OFF_PTD, 0)) DB_WOFF,
            SUM(NVL(DSTAT.DBTRS_PRVSN_PTD, 0)) DB_PROV
FROM        ENG_WIP_STATS WSTAT,
            ENG_DBTRS_STATS DSTAT
WHERE             WSTAT.ENG_NUMB(+)=DSTAT.ENG_NUMB
AND         WSTAT.FNANCL_YEAR=DSTAT.FNANCL_YEAR
AND         WSTAT.PRD_NUMB=DSTAT.PRD_NUMB
GROUP BY    WSTAT.ENG_NUMB,
            WSTAT.FNANCL_YEAR,
            WSTAT.PRD_NUMB




) V2


WHERE v1.ENGAGEMENT=V2.ENGAGEMENT(+)


AND   TO_DATE(V2.YEAR(+)||V2.PERIOD(+),'YYYYMM') >=

ADD_MONTHS(TO_DATE(V1.YEAR||V1.PERIOD,'YYYYMM'),-12)

AND   TO_DATE(V2.YEAR(+)||V2.PERIOD(+),'YYYYMM') <=
TO_DATE(V1.YEAR||V1.PERIOD,'YYYYMM')



GROUP BY V1.ENGAGEMENT



,     V1.YEAR


,     V1.PERIOD





Explain plan:



   ID   PID QUERY_PLAN



----- -----



    0       SELECT STATEMENT   Cost = 12531921
    1     0   SORT GROUP BY  Card=62754915
    2     1     MERGE JOIN OUTER  Card=62754915
    3     2       SORT JOIN  Card=1584360
    4     3         VIEW   Card=1584360
    5     4           SORT GROUP BY  Card=1584360
    6     5             FILTER   Card=
    7     6               MERGE JOIN OUTER  Card=
    8     7                 SORT JOIN  Card=1354977
    9     8                   TABLE ACCESS FULL ENG_DBTRS_STATS
Card=1354977
   10     7                 SORT JOIN  Card=1956365
   11    10                   TABLE ACCESS FULL ENG_WIP_STATS Card=1956365
   12     2       FILTER   Card=
   13    12         SORT JOIN  Card=
   14    13           VIEW   Card=1584360
   15    14             SORT GROUP BY  Card=1584360
   16    15               FILTER   Card=
   17    16                 MERGE JOIN OUTER  Card=
   18    17                   SORT JOIN  Card=1354977
   19    18                     TABLE ACCESS FULL ENG_DBTRS_STATS
Card=1354977
   20    17                   SORT JOIN  Card=1956365
   21    20                     TABLE ACCESS FULL ENG_WIP_STATS


Card=1956365




THX






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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Jack van Zanen
  INET: nlzanen1_at_EY.NL

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Received on Thu Aug 15 2002 - 08:13:23 CDT












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