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g2ktcf
New Member

Parsing JSON is not giving all values

I am getting some odd behavior from attempting to expand a column with different JSON strings.  Each column can have different strings.  It appears that 

 

= Table.TransformColumns(#"Sorted Rows",{{"CustomFields", Json.Document}})

 

only grabs a certain number of records/rows.  I need it to see ALL of them.  We have sorted the table such that the problem row at 204 shows up at row 1, and everything works as expected.  But I have no control over where this record lies in production.  I am scratching my head here.  The image below is the newly sorted version.

g2ktcf_0-1708550138293.png

 

3 REPLIES 3
v-cgao-msft
Community Support
Community Support

Hi @g2ktcf ,

Are you looking for output similar to this? Try unpivoting the expanded columns.

vcgaomsft_0-1708567875495.png

Advanced editor:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WUqiOUQpJLM52SSxJDcnMTTUyiVGyilEyMjAy0TUw0jU0CzEwsAIjPQMDgxglHTTlxijKjSwJKDdCVW6EprxWSUfJUClWJ1oJ6iy/sMQi54zEIhNTsEa4gTBxIwsLqEStAlCvEQV6jSnQa6IUGwsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [CustomFields = _t, Column1 = _t]),
    #"Replaced Value" = Table.TransformColumnTypes(Source,{{"CustomFields", type text}, {"Column1", Int64.Type}}),
    #"Parsed JSON" = Table.TransformColumns(#"Replaced Value",{{"CustomFields", Json.Document}}),
    #"Expanded CustomFields" = Table.ExpandRecordColumn(#"Parsed JSON", "CustomFields", {"TaskDateTime24", "TaskDateTime23", "TaskDateTime22", "TaskNVarChar45", "TaskNVarChar288"}, {"TaskDateTime24", "TaskDateTime23", "TaskDateTime22", "TaskNVarChar45", "TaskNVarChar288"}),
    #"Unpivoted Columns" = Table.UnpivotOtherColumns(#"Expanded CustomFields", {"Column1"}, "Attribute", "Value")
in
    #"Unpivoted Columns"

If I misunderstood your question, could you tell me what your expected output is?

Best Regards,
Gao

Community Support Team

 

If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly.
If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly --  How to provide sample data in the Power BI Forum -- China Power BI User Group

I need each Attribute to be its own Field/Column.  I have reached out to my data source for a possible SQL solution.   I thought that the parsing was working...but it only brings in partials.

g2ktcf
New Member

Sorry, I have an error above...each ROW can have different JSON pairs.

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