Power query

[Anonymous]

Hey Team,

Is there any method in power query to find for a particular key word for the complete row instead of just searching for a particular column 

If there is any method for this then please suggest.

Thanks

[edhans]

Try this @Anonymous - You can convert a record to a list, then search it. If it returns the text you are looking for, it will count the returns and return 0 if nothing was found, or 1 or more if it was found.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSlTSUUoC4mSlWJ1opRQgKxWI05RiYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t]),
    #"Added Custom" = 
        Table.AddColumn(
            Source, 
            "Custom", 
            each 
                List.Count(
                    List.FindText(
                        Record.ToList(Source{_}),
                        "a")
                    )
                )
in
    #"Added Custom"

I searched for the letter "a" here. I'd need more data to see what you are exactly trying to accomplish.

[Anonymous]

I have attached the screenshot above, In this, I have to calculate the number of P's in date columns for every row and these date columns is dynamic, it will change from list to list

[edhans · Accepted solution]

I would do it differently.

I did this:

1. Seleccted the first 3 columns, then unpivoted other columns
2. Filtered the "a" out of the Values column
3. Grouped by the first 3 columns and did a CountRows.

I get this:

If you need the original data again, just merge it with the source step.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WqlDSUUoE4lQoDcGxOtFKVVVVQDaUhMoUgDFItqICpBNCwCXAkrEA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, #"1/1/2021" = _t, #"1/2/2021" = _t, #"1/3/2021" = _t]),
    #"Unpivoted Other Columns" = Table.UnpivotOtherColumns(Source, {"Column1", "Column2", "Column3"}, "Attribute", "Value"),
    #"Filtered Rows" = Table.SelectRows(#"Unpivoted Other Columns", each ([Value] = "p")),
    #"Grouped Rows" = Table.Group(#"Filtered Rows", {"Column1", "Column2", "Column3"}, {{"Count", each Table.RowCount(_), Int64.Type}}),
    #"Merged Queries" = Table.NestedJoin(Source, {"Column1", "Column2", "Column3"}, #"Grouped Rows", {"Column1", "Column2", "Column3"}, "Grouped Rows", JoinKind.LeftOuter),
    #"Expanded Grouped Rows" = Table.ExpandTableColumn(#"Merged Queries", "Grouped Rows", {"Count"}, {"Count"})
in
    #"Expanded Grouped Rows"

I would not recommend the final merge steps though. It is generally bad practice to leave dates in columns. They should be rows, both in Power Query and DAX.

But, it looks like this. This will work with any number of date columns.

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.

[Anonymous]

Thank you, It helped me to get the required output

[edhans]

Excellent @Anonymous - whenver I have variable columns, Unpivot Other Columns is one of my first go-to tools. Hope the rest of your project goes well.

[Anonymous]

Hey,

Suppose I have 500 tables and I need to expand those tables and need to apply the same query to all those tables, So how can we do that

And when we expand those tables, they should appear as different query

[edhans]

You can write a custom function and apply it to 500 queries, or you can bring in 500 tables and combine as one. 

But you cannot bring in 500 tables and press a button and create 500 queries. Why in the world would you want 500 tables in your model? That would be a DAX nightmare. You should bring them into 1 table, but perhaps with some source name next to them, then you could filter each of them.

But this is really another thread.

[Anonymous]

Yes, after unpivoting it, the calculations became so easy to be done and I skipped that merging part, because some errors were there while expanding those

[watkinnc]

Why yes there is! It's Table.FindText(Table, "TextToFind")

This will return all rows where that string appears.

--Nate

[Anonymous]

I tried this but it not giving me the required output.

[edhans]

Ok, but your response isn't terribly revealing.

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