Question

我想用以下公式计算和比较实际季度成本与上一季度成本:(实际年平均成本）/（去年平均每季成本）

我已经完成了实际的季度：

avg ("TOTAL_MONTHLY_COST_IN_USD") OVER (PARTITION BY START_YEARS, 
START_QUARTERS ORDER BY "START_QUARTERS" desc) as "PAST_Q"

但最困难的是每季平均获得-1平均成本。在最后的结果中，我希望我的表格看起来像这样：

ACT_Q | PAST_Q | DIVIDE
567.2 | 456.6  |  1.24

为了获得PAST_Q，我尝试使用partition by和PRECEDING。我有以下支持列进行计算：

START_DATE , START_MONTH, START_QUARTER , START_YEAR .

此外，我使用add_month（x，-12）创建了这些，并将它们称为LAST_YEAR等。

我的第一次尝试：我在内部选择中分离了sum_cost计算和count_rows，然后将它们分开，但在结果中我只获得了0个值。

case when nvl(quarter_count, 0)<>0 then
sum_totalcost/quarter_count
end as "PAST_AVG_COST_QUARTERLY"

(avg ("TOTAL_MONTHLY_COST_IN_USD") OVER (PARTITION BY START_YEARS, START_QUARTERS ORDER BY ACTUAL_YEAR_QUARTER RANGE BETWEEN 450 PRECEDING AND 0 FOLLOWING) - avg ("TOTAL_MONTHLY_COST_IN_USD") OVER (PARTITION BY START_YEARS, START_QUARTERS ORDER BY ACTUAL_YEAR_QUARTER RANGE BETWEEN 360 PRECEDING AND 0 FOLLOWING)) as sum_cost

(count (*) OVER (PARTITION BY START_YEARS, 
START_QUARTERS ORDER BY 
ACTUAL_YEAR_QUARTER RANGE BETWEEN 450 PRECEDING AND 0 FOLLOWING) - count (*) OVER
 (PARTITION BY START_YEARS, START_QUARTERS 
ORDER BY ACTUAL_YEAR_QUARTER RANGE BETWEEN 360 PRECEDING AND 0 FOLLOWING)) as count_rows

任何人都知道如何计算此范围的最佳做法？这真的很有帮助！提前谢谢。

Answer 1

如何计算两个日期范围（Partition by和PRECEDING）

1 个答案: