Creating Weighted Average Sub-Totals in Standard Apex Report

Question

Based upon the below query, I am trying to have a Standard SQL report produce Weighted Average sub totals for 4 columns
SELECT   Pool
, order_by
, Pool_order
, Perf_Non_Perf
, CurrBal
, LowVal
, HighVal
, LossHigh
, LossLow
, CalcCurrBal
, DECODE(CurrBal,0,0,(LowVal/CurrBal * 100 )) AS LowPercent
, DECODE(CurrBal,0,0,(HighVal/CurrBal * 100 )) AS HighPercent
, DECODE(CalcCurrBal,0,0,(LossHigh/CalcCurrBal * 100)) AS LossHighPercent
, DECODE(CalcCurrBal,0,0,(LossLow/CalcCurrBal * 100)) AS LossLowPercent
From (
SELECT   Pool
, 1 as order_by
, Pool Pool_order
, Perf_Non_Perf
, Sum(Current_Balance) AS CurrBal
, Sum(Low_Value) AS LowVal
, Sum(High_Value) AS HighVal
, Sum(Calculated_Cumm_Loss_High) AS LossHigh
, Sum(Calculated_Cumm_Loss_Low) AS LossLow
, Sum(Current_Balance_to_Calc_Cumm_L) AS CalcCurrBal
FROM Current_Data
GROUP BY Pool, Perf_Non_Perf
ORDER BY Pool, Perf_Non_Perf DESCThe columns in question are:
LowPercent
HighPercent
LossHighPercent
LossLowPercent
Any ideas other than using a union to add the sub-totals in as a separate query (trying to keep this confined to one query if possible)..
Thank you,
Tony Miller
Dallas, TX

Answer 1

Tony,
The PL/SQL forum may answer this better but had you considered the ROLLUP or CUBE GROUP BY functions? ROLLUP would look like this in your query:
  SELECT pool,
         order_by,
         pool_order,
         perf_non_perf,
         currbal,
         lowval,
         highval,
         losshigh,
         losslow,
         calccurrbal,
         SUM (DECODE (currbal, 0, 0, (lowval / currbal * 100))) AS lowpercent,
         SUM (DECODE (currbal, 0, 0, (highval / currbal * 100))) AS highpercent,
         SUM (DECODE (calccurrbal, 0, 0, (losshigh / calccurrbal * 100)))
            AS losshighpercent,
         SUM (DECODE (calccurrbal, 0, 0, (losslow / calccurrbal * 100)))
            AS losslowpercent
    FROM (  SELECT pool,
                   1 AS order_by,
                   pool pool_order,
                   perf_non_perf,
                   SUM (current_balance) AS currbal,
                   SUM (low_value) AS lowval,
                   SUM (high_value) AS highval,
                   SUM (calculated_cumm_loss_high) AS losshigh,
                   SUM (calculated_cumm_loss_low) AS losslow,
                   SUM (current_balance_to_calc_cumm_l) AS calccurrbal
              FROM current_data
          GROUP BY pool, perf_non_perf)
GROUP BY rollup (pool,
                 order_by,
                 pool_order,
                 perf_non_perf,
                 currbal,
                 lowval,
                 highval,
                 losshigh,
                 losslow,
                 calccurrbal)
ORDER BY pool, perf_non_perf DESCJeff