Problems when importing CSV file

[brandanb]

I have a CSV file that I've imported and set "comma" as the delimiter. However, the way the CSV was formatted, I'm running into issues. Below, table 1, is what Power BI & Excel automatically transform the CSV into. Table 2 is what I need the data to look like. How do I transform this?

1.)

Username	ValidSerialNumbers
johndoe	XYZ1234, ABC1234, DEF1234
alicedoe	WEB1234, FRE1234, BVY1234

2.)

Username	ValidSerialNumbers
johndoe	XYZ1234
johndoe	ABC1234
johndoe	DEF1234
alicedoe	WEB1234
alicedoe	FRE1234
alicedoe	BVY1234

[v-deddai1-msft]

Hi @brandanb ,

Would you please refer to the M query:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WysrPyEvJT1XSUYqIjDI0MjbRUXB0coYwXFzdQAylWJ1opcSczORUiMJwVyeIvFuQK4ThFBYJURgLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Username = _t, ValidSerialNumbers = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Username", type text}, {"ValidSerialNumbers", type text}}),
    #"Split Column by Delimiter" = Table.SplitColumn(#"Changed Type", "ValidSerialNumbers", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), {"ValidSerialNumbers.1", "ValidSerialNumbers.2", "ValidSerialNumbers.3"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"ValidSerialNumbers.1", type text}, {"ValidSerialNumbers.2", type text}, {"ValidSerialNumbers.3", type text}}),
    #"Unpivoted Other Columns" = Table.UnpivotOtherColumns(#"Changed Type1", {"Username"}, "Attribute", "Value"),
    #"Removed Columns" = Table.RemoveColumns(#"Unpivoted Other Columns",{"Attribute"})
in
    #"Removed Columns"

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

Best Regards,

Dedmon Dai

[amitchandak · Accepted solution]

@brandanb , In data transformation/edit query you have an option to split column. Split column into rows. use that

check steps

https://www.tutorialgateway.org/how-to-split-columns-in-power-bi/