[英]Power Bi - Lookup for A Value in Different Table (Reference Table) and Return True
[英]Dynamic row comparison in one table - DAX / M language / Power BI
這可能嗎?
我有一個表格,其中包含產品版本的列(例如: fast car )。 每個版本都有一個零件列表(例如: color )。 每個部分都有許多值 (例如: red )。
VERSION PART PART_VALUE VERSION1 PART1 PART_VALUE1 VERSION1 PART2 PART_VALUE2 VERSION1 PART3 PART_VALUE3 VERSION2 PART2 PART_VALUE2 VERSION2 PART3 PART_VALUE3 VERSION2 PART4 PART_VALUE4 VERSION3 PART1 PART_VALUE1 VERSION3 PART2 PART_VALUE2 VERSION3 PART3 PART_VALUE4
現在,我想在“ Fragmentator”或其他復選框中選擇“ Version1”和“ Version2” ,結果應為:
"ONLY DIFFENCES BETWEEN VERSION1 AND VERSION2"
VERSION1 PART1 PART_VALUE1 VERSION2 PART4 PART_VALUE4
或在選擇Version1和Version3之后 ,結果應為:
"ONLY DIFFENCES BETWEEN VERSION1 AND VERSION3"
VERSION1 PART3 PART_VALUE3 VERSION3 PART3 PART_VALUE4
這是一個M查詢,它應該執行您想要的操作:
(V1, V2) =>
let
Source = MyTable,
First = Table.SelectRows(Source, each ([VERSION] = V1)),
Second = Table.SelectRows(Source, each ([VERSION] = V2)),
#"First Unique" = Table.NestedJoin(First,{"PART", "PART_VALUE"},Second,{"PART", "PART_VALUE"},"Second",JoinKind.LeftAnti),
#"Second Unique" = Table.NestedJoin(Second,{"PART", "PART_VALUE"},First,{"PART", "PART_VALUE"},"First",JoinKind.LeftAnti),
Combine = Table.Combine({#"First Unique", #"Second Unique"}),
#"Removed Columns" = Table.RemoveColumns(Combine,{"Second", "First"})
in
#"Removed Columns"
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