Forum Discussion
array to filter
Hi
I have a standard column with array data like;
a
a,b,c
b,c
a
hoping to create a filter - flattened for users to select single values
the filter would present as flattened and unique only
a
b
c
and for example a filter by "c" would return 3 rows
Help please 😛
thank you!
In Power Query, just split this column by the comma delimiter into rows, then remove duplicates. Here is the code:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSlSK1QGSOkk6yWAWjAaKxwIA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column = _t]), #"Split Column by Delimiter" = Table.ExpandListColumn(Table.TransformColumns(Source, {{"Column", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), let itemType = (type nullable text) meta [Serialized.Text = true] in type {itemType}}}), "Column"), #"Removed Duplicates" = Table.Distinct(#"Split Column by Delimiter") in #"Removed Duplicates"Turns this:
into this, which can be used for your slicer.
How to use M code provided in a blank query:
1) In Power Query, select New Source, then Blank Query
2) On the Home ribbon, select "Advanced Editor" button
3) Remove everything you see, then paste the M code I've given you in that box.
4) Press Done
5) See this article if you need help using this M code in your model.
4 Replies
In Power Query, just split this column by the comma delimiter into rows, then remove duplicates. Here is the code:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSlSK1QGSOkk6yWAWjAaKxwIA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column = _t]), #"Split Column by Delimiter" = Table.ExpandListColumn(Table.TransformColumns(Source, {{"Column", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), let itemType = (type nullable text) meta [Serialized.Text = true] in type {itemType}}}), "Column"), #"Removed Duplicates" = Table.Distinct(#"Split Column by Delimiter") in #"Removed Duplicates"Turns this:
into this, which can be used for your slicer.
How to use M code provided in a blank query:
1) In Power Query, select New Source, then Blank Query
2) On the Home ribbon, select "Advanced Editor" button
3) Remove everything you see, then paste the M code I've given you in that box.
4) Press Done
5) See this article if you need help using this M code in your model.Yeh i got that far
didn't realise once in the new table I could join as many to many to underlying column(tags) and use as filter
thanks
seems to be working well thanksWithout seeing the data and model not sure I can answer that, other than to say I'd avoid M2M relationships if possible. A 1 to Many is much better.
Microsoft recommends minimizing use of both Many-to-Many and Bi-Directional Relationships. In other words, unless you are a DAX expert, find another way to remodel your data to conform to a Star Schema and don't use these two features. I avoid them both at all costs.
Microsoft Guidance on Many-To-Many Relationships
or should I just use original column transformed?
