Merge values from rows into one row

[jaryszek]

Hi Guys,

i have table like here:

1	DeploymentsMap
6	DeploymentsMap
3	DeploymentsMap
6	DeploymentsMap

and what i want to get is:

TableName|Index

DeploymentsMap

1;3;6

how to do this?

I will have multiple TableNAmes in a column...

Please help,
Jacek

[v-eqin-msft · Accepted solution]

Hi @jaryszek ,

Please try:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUXJJLcjJr8xNzSsp9k0sUIrViVYywy5sjF3Y0NrI2tjaxNoUu7QRUNjRyRnMNoGxYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type text}}),
    #"Split Column by Delimiter" = Table.ExpandListColumn(Table.TransformColumns(#"Changed Type", {{"Column1", Splitter.SplitTextByDelimiter(";", QuoteStyle.Csv), let itemType = (type nullable text) meta [Serialized.Text = true] in type {itemType}}}), "Column1"),
    #"Removed Duplicates" = Table.Distinct(#"Split Column by Delimiter"),
    #"Grouped Rows" = Table.Group( #"Removed Duplicates", {"Column2"}, {{"Combined", each Text.Combine(List.Sort(List.Distinct([Column1])), ";")}})
in
    #"Grouped Rows"

Best Regards,
Eyelyn Qin
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[mahoneypat]

You can do that by creating a Group By step on the Home tab, and then modifying the code in the Formula Bar to match this example.  To see how it works, just create a blank query, open the Advanced Editor and replace the text there with the M code below.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUXJJLcjJr8xNzSsp9k0sUIrViVYywy5sTLzqWAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type text}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Column2"}, {{"Combined", each Text.Combine(List.Sort(List.Distinct([Column1])), ";")}})
in
    #"Grouped Rows"

Pat

[jaryszek]

Thank you it is working!

One more thing. 

Sometimes i will have already created strings as Value like "1;2;3;4;5":

1	DeploymentsMap
6	DeploymentsMap
3	DeploymentsMap
1;2;3;4;5	DeploymentsMap

And as result i would like to get 

1;2;3;4;5;6

DeploymentsMap

so check if in list value exists, if not append. So check if there is alreadylist, if yes to not have duplicates --> 

appendto get only uniqes.

what i get using provided formula:

Column2Combined

DeploymentsMap

1;1;2;3;4;5;3;6

Can you please advise also?

Best,
Jacek

[jaryszek]

And the problem which i can have also that sometimes 

Value can be an array like "1;2;3;4;5" and in this case i should keep whole array plus append missing rows.

So in this case i would append "6" to get "1;2;3;4;5;6"

Best,
Jacek