Power BI 中的环比度量 [英] QoQ Measures in Power BI

问题描述

我希望在表格中进行 QoQ 计算.我面临的问题是我不知道如何计算以前的值，而当前值也显示出来.然后我会使用该字段来创建差异或百分比差异.希望下面的例子能说明问题.

I am looking to do a QoQ calculation in a table. The problem I am facing is that I do not know how to calculate the previous value while the current value also shows. I would then use that field to create a difference or % difference. Hopefully the following example makes it clear.

样本数据:

Quarter |   Year    |Product|   Measure
Q1/19   |   2018    |   A   |   22
Q1/19   |   2018    |   B   |   61
Q1/19   |   2018    |   C   |   187
Q2/19   |   2018    |   A   |   121
Q2/19   |   2018    |   B   |   31
Q2/19   |   2018    |   C   |   15
Q3/19   |   2018    |   A   |   68
Q3/19   |   2018    |   B   |   200
Q3/19   |   2018    |   C   |   75
Q4/19   |   2018    |   A   |   123
Q4/19   |   2018    |   B   |   86
Q4/19   |   2018    |   C   |   153
Q1/19   |   2019    |   A   |   30
Q1/19   |   2019    |   B   |   131
Q1/19   |   2019    |   C   |   178
Q2/19   |   2019    |   A   |   168
Q2/19   |   2019    |   B   |   138
Q2/19   |   2019    |   C   |   87
Q3/19   |   2019    |   A   |   56
Q3/19   |   2019    |   B   |   15
Q3/19   |   2019    |   C   |   88
Q4/19   |   2019    |   A   |   96
Q4/19   |   2019    |   B   |   173
Q4/19   |   2019    |   C   |   76 

期望的输出:
如下所示

Desired Output:
It would be something like below

尝试:
我根据下面的链接尝试了以下公式，但它不起作用
链接:https://community.powerbi.com/t5/Desktop/How-to-add-previous-row-value-with-current-one-and-then-keep/td-p/493467

Previous Value = CALCULATE(SUM('Sheet1'[Measure]), 
FILTER(Sheet1,Sheet1[Quarter]<=EARLIER('Sheet1'[Quarter])))

我会在 Power bi 中使用 PREVIOUSQUARTER 函数，但我认为我必须将季度转换为日期，并且我需要使用的季度与日历季度不同

I would use the PREVIOUSQUARTER function in Power bi but then I believe I would have to convert quarter into date AND the quarter that I need to use is not the same as the calendar quarter

推荐答案

我要做的第一件事是尝试在您的宿舍中创建有序性.现在你只列出带有后缀/19 的季度，但我可以想象你也打算拥有/18?在这种情况下，我建议将年份放在第一位，然后是您的季度，因为这样在按字母顺序排序时会产生正确的顺序.例如.现在按字母顺序排序时，Q1/19 在 Q2/18 之前，而 18/Q2 将在 19/Q1 之前正确排序.

The first thing I'd do is try to create ordinality in your quarters. Right now you only list quarters with the post-fix /19 but I can imagine you meant to have /18 as well? In that case I would advice to put the year first and then your quarter as that will result in the right order when sorting alphabetically. E.g. Q1/19 comes before Q2/18 when sorted alphabetically now, while 18/Q2 would be sorted correctly before 19/Q1.

虽然您可以在单个度量中提出请求，但我建议您使用计算列和度量，以便于理解.

Although you can do you request in a single measure I'd recommend using a calculated column and a measure so it remains easy to understand.

首先创建一个分组索引列(计算列).这将为每个季度创建组，并按字母顺序添加索引号对它们进行排序.

First you create a grouped index column (calculated column). This will create groups for each quarter and will sort them alphabetically adding an index number.

gIndex = RANKX( SUMMARIZE( 'Sheet1' ; 'Sheet1'[Quarter] ) ; 'Sheet1'[Quarter] ; ; ASC )

然后您可以使用以下(度量)来创建时移季度总计

Then you can use the following (measure) to create the timeshifted quarter total

Previous Q = 

CALCULATE (
    SUM ( 'Sheet1'[Measure] ) ; 
    FILTER ( 
        ALLSELECTED ( 'Sheet1' ) ;
        'Sheet1'[gIndex] = MAX ( 'Sheet1'[gIndex] ) - 1
    )
)

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