如何通过另一个表中的多个（动态）条件过滤一个表？

Question

我一直在努力提高查询的灵活性。

我有事实表：

enabled	country	color	count	vehicle
yes	DE	yellow	one	car
no	FR	blue	one	car
no	DE	red	one	bike
yes	DE	green	one	car
yes	ES	yellow	one	car
yes	IT	yellow	two	car
yes	IT	yellow	one	car

在 Excel 中我还想要两个简单的配置表：

1. 表：RemoveRecordsByValue 包含字段-值对的表，如果有任何匹配项，则作为删除这些记录的条件。

field	value
vehicle	bike
color	green
color	red

1. 表：KeepRecordsByValue 一张桌子，可能

field	value
country	DE
country	IT
count	one

预期的表格是：

enabled	country	color	count	vehicle
yes	DE	yellow	one	car
yes	IT	yellow	one	car

任何人都可能有提示如何解决这个问题？

提前致谢，

***FactsTable***

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WqkwtVtJRcnEFEpWpOTn55UBGfl4qkExOLFKK1YlWyssHctyCgERSTmkqdmmw/qLUFLhsUmZ2Klgayfz0otTUPAz9EAWuwbgdAFHhGYKsoqQ8n4AKJDNiAQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [enabled = _t, country = _t, color = _t, count = _t, vehicle = _t]),
    Result = Table.TransformColumnTypes(Source,{{"enabled", type text}, {"country", type text}, {"color", type text}, {"count", type text}, {"vehicle", type text}})
in
    Result


***RemoveRecordsByValue***

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WKkvNyEzOSVXSUUrKzE5VitWJVkrOz8kvAgqkF6Wm5qGIFKWmKMXGAgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [field = _t, value = _t]),
    Result = Table.TransformColumnTypes(Source,{{"field", type text}, {"value", type text}})
in
    Result


***KeepRecordsByValue***

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSs4vzSspqlTSUXJxVYrVQRbwDEEIALn5ealKsbEA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [field = _t, value = _t]),
    Result = Table.TransformColumnTypes(Source,{{"field", type text}, {"value", type text}})
in
    Result
´´´

Answer 1

可能有一百万种方法可以做到这一点。这是一个

将 KeepRecordsByValue 和 RemoveRecordsByValue 作为单独的 powerquery 查询加载

加载事实表。添加索引。单击选择索引并取消透视其他列。

使用左外连接将事实表与 RemoveRecordsByValue 合并并展开一个字段。

使用左外连接将结果与 KeepRecordsByValue 合并并展开一个字段。

按索引对结果进行分组，并从上方组合展开的字段

过滤掉 RemoveRecordsByValue 组合列中包含文本的任何内容以及 KeepRecordsByValue 组合列中包含空白的任何内容

该表具有您要保留的唯一索引项。使用索引上的内部连接将其与原始事实表合并

let Source = Excel.CurrentWorkbook(){[Name="Table3"]}[Content],
#"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1),
#"Unpivoted Other Columns" = Table.UnpivotOtherColumns(#"Added Index", {"Index"}, "Attribute", "Value"),
#"Merged Queries" = Table.NestedJoin(#"Unpivoted Other Columns",{"Attribute", "Value"},RemoveRecordsByValue,{"field", "value"},"RemoveRecordsByValue",JoinKind.LeftOuter),
#"Expanded RemoveRecordsByValue" = Table.ExpandTableColumn(#"Merged Queries", "RemoveRecordsByValue", {"value"}, {"Remove"}),
#"Merged Queries1" = Table.NestedJoin(#"Expanded RemoveRecordsByValue",{"Attribute", "Value"},KeepRecordsByValue,{"field", "value"},"KeepRecordsByValue",JoinKind.LeftOuter),
#"Expanded KeepRecordsByValue" = Table.ExpandTableColumn(#"Merged Queries1", "KeepRecordsByValue", {"value"}, {"keep"}),
Grouped= Table.Group(#"Expanded KeepRecordsByValue", {"Index"}, {{"Remove", each Text.Combine([Remove]," "), type text},{"Keep", each Text.Combine([keep]," "), type text}}),
#"Filtered Rows" = Table.SelectRows(Grouped, each ([Remove] = "") and ([Keep] <> "")),
#"Merged Queries2" = Table.NestedJoin(#"Added Index",{"Index"},#"Filtered Rows",{"Index"},"zzz",JoinKind.Inner),
#"Removed Columns" = Table.RemoveColumns(#"Merged Queries2",{"Index", "zzz"})
in  #"Removed Columns"