计算 Power BI 中两个筛选器之间的差异

Question

我有一个 Excel 表格，其中包含以下格式的数据

UploadDate	Grant Family	Project Officer
05/04/2019	00J90301	AA 
05/04/2019	01J32201	AA 
05/04/2019	97891601	AA 
05/04/2019	00406918	AB 
05/04/2019	00406015	AC 
05/04/2019	00406515	AC 
05/04/2019	00406715	AC 
05/04/2019	00406815	AC 
05/04/2019	00526416	AC 
05/04/2019	00571110	AC 
05/04/2019	00D28115	AC 
05/04/2019	00D28215	AC 
05/04/2019	00D28315	AC 
05/04/2019	00D28415	AC 
05/04/2019	00D29215	AC 
05/04/2019	00D29515	AC 
05/04/2019	00D30415	AC 
05/04/2019	00D30715	AC 
05/04/2019	00D30815	AC 
05/04/2019	00D31015	AC 
05/04/2019	00D41515	AC 
05/04/2019	00D49516	AC 
05/04/2019	00D63217	AC 
05/04/2019	00D63317	AC 
05/04/2019	00E01521	AC 
05/04/2019	00E01547	AC 
05/04/2019	00E01999	AC 
05/04/2019	00E02038	AC 
05/04/2019	00E02335	AC 
05/04/2019	00E02338	AC 
05/04/2019	00E16405	AC 
05/04/2019	00E66504	AC 
05/04/2019	00E66603	AC 
05/04/2019	00E66604	AC 
05/04/2019	02E01503	AC 
05/04/2019	83579302	AC 
05/04/2019	95490317	AC 
05/04/2019	97431017	AC 
05/04/2019	98408917	AC 
05/04/2019	98409217	AC 
05/04/2019	98485117	AC 
05/04/2019	98490416	AC 
05/04/2019	99060104	AC 
05/04/2019	99407714	AC 
05/04/2019	99446514	AC 
05/04/2019	00T26201	AD 
05/04/2019	00T76718	AD 
05/04/2019	00T77117	AD 
06/11/2019	00J90301	AA 
06/11/2019	01J32201	AA 
06/11/2019	97891601	AA 
06/11/2019	00406918	AB 
06/11/2019	00406015	AC 
06/11/2019	00406515	AC 
06/11/2019	00406715	AC 
06/11/2019	00406815	AC 
06/11/2019	00526416	AC 
06/11/2019	00571110	AC 
06/11/2019	00D28115	AC 
06/11/2019	00D28215	AC 
06/11/2019	00D28315	AC 
06/11/2019	00D28415	AC 
06/11/2019	00D29215	AC 
06/11/2019	00D29515	AC 
06/11/2019	00D30415	AC 
06/11/2019	00D30715	AC 
06/11/2019	00D30815	AC 
06/11/2019	00D31015	AC 
06/11/2019	00D41515	AC 
06/11/2019	00D49516	AC 
06/11/2019	00D63217	AC 
06/11/2019	00D63317	AC 
06/11/2019	00E01521	AC 
06/11/2019	00E01547	AC 
06/11/2019	00E01999	AC 
06/11/2019	00E02038	AC 
06/11/2019	00E02335	AC 
06/11/2019	00E02338	AC 
06/11/2019	00E16405	AC 
06/11/2019	00E66504	AC 
06/11/2019	00E66603	AC 
06/11/2019	00E66604	AC 
06/11/2019	02E01503	AC 
06/11/2019	83579302	AC 
06/11/2019	95490317	AC 
06/11/2019	97431017	AC 
06/11/2019	98408917	AC 
06/11/2019	98409217	AC 
06/11/2019	98485117	AC 
06/11/2019	98490416	AC 
06/11/2019	99060104	AC 
06/11/2019	99407714	AC 
06/11/2019	99446514	AC 
06/11/2019	00T26201	AC 
06/11/2019	00T76718	AC 
06/11/2019	00T77117	AC 

我们的 PowerBI 文件有几个表格，可以返回在某个上传日期，有多少项目官员在 1-2 个、3-9 个和 20 个以上的资助家族之间工作过。我们检查了这些数字和过滤器，它们有效。

我们的下一个目标是展示上传日期之间的差异。

我创建了类似的 DAX 度量

PO_Difference = Calculate(DistinctCount('Report'[Project Officer]),'Report'[Upload Date] = date (2019,11,6))-Calculate(DistinctCount('Report'[Project Officer]),'Report'[Upload Date] = date (2019,4,5))
'

而且它没有返回我们预期的结果。如果我将公式分成两部分，如果我应用它们的相关过滤器，两个计算部分都会返回预期结果，但我的直觉是过滤器会扭曲公式为每个部分返回的内容，我不知道如何处理这个.任何帮助将不胜感激。

Answer 1

你可以尝试使用变量吗？

PO_Difference =
VAR x = Calculate(DistinctCount('Report'[Project Officer]),'Report'[Upload Date] = date (2019,11,6))

VAR y = Calculate(DistinctCount('Report'[Project Officer]),'Report'[Upload Date] = date (2019,4,5))

return x -y