Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Compete to become Power BI Data Viz World Champion! First round ends August 18th. Get started.

Reply
Anonymous
Not applicable

Read Json

Hello,

I need to read a json file in the format below, but the json that the API returns is not in very common formatting. How do I transform this json into a table?



EX: 
___________________________________
_trend_value || ip_trend_time || name 
0 || dd/mm/yyyy || xxxxxx 
0 || dd/mm/yyyy || xxxxxx 
___________________________________

 

 

Json:
{
"data": [
{
"r": "D",
"cols": [
{
"i": 0,
"n": "ip_trend_value"
},
{
"i": 1,
"n": "ip_trend_time"
},
{
"i": 2,
"n": "name"
}
],
"rows": [
{
"fld": [
{
"i": 0,
"v": 5.320000171661377
},
{
"i": 1,
"v": "06-FEB-19 09:21:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.309999942779541
},
{
"i": 1,
"v": "06-FEB-19 09:22:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.309999942779541
},
{
"i": 1,
"v": "06-FEB-19 09:23:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.300000190734863
},
{
"i": 1,
"v": "06-FEB-19 09:24:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.320000171661377
},
{
"i": 1,
"v": "06-FEB-19 09:25:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.320000171661377
},
{
"i": 1,
"v": "06-FEB-19 09:26:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.320000171661377
},
{
"i": 1,
"v": "06-FEB-19 09:27:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.320000171661377
},
{
"i": 1,
"v": "06-FEB-19 09:28:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.300000190734863
},
{
"i": 1,
"v": "06-FEB-19 09:29:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
},
{
"fld": [
{
"i": 0,
"v": 5.309999942779541
},
{
"i": 1,
"v": "06-FEB-19 09:30:28.4"
},
{
"i": 2,
"v": "UDI_UT_3_601_001"
}
]
}
]
}
]
}

1 ACCEPTED SOLUTION
tonmcg
Resolver II
Resolver II

This was a bit tricky. Each row object has an array of fields that needs to be transposed so each field becomes a column in a table.

 

So for each row, I essentially changed the format from this:

 

{
  "fld": [
    {
      "i": 0,
      "v": 5.320000171661377
    },
    {
      "i": 1,
      "v": "06-FEB-19 09:21:28.4"
    },
    {
      "i": 2,
      "v": "UDI_UT_3_601_001"
    }
  ]
}

to this:

 

{
  "fld": [
    {
      "v1": 5.320000171661377,
      "v2": "06-FEB-19 09:21:28.4",
      "v3": "UDI_UT_3_601_001"
    }
  ]
}

Here's the Power Query M equivalent I came up with. To work for your purposes, replace the jsonText and jsonBinary steps below with your JSON source:

 

let
    jsonText = "{""data"":[{""r"":""D"",""cols"":[{""i"":0,""n"":""ip_trend_value""},{""i"":1,""n"":""ip_trend_time""},{""i"":2,""n"":""name""}],""rows"":[{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:21:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:22:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:23:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.300000190734863},{""i"":1,""v"":""06-FEB-19 09:24:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:25:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:26:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:27:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:28:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.300000190734863},{""i"":1,""v"":""06-FEB-19 09:29:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:30:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]}]}]}",
    jsonBinary = Text.ToBinary(jsonText),
    jsonDocument = Json.Document(jsonBinary),
    data = jsonDocument[data],
    childNode = data{0},
    cols = childNode[cols],
    ConvertedColsToTable = Table.FromList(cols, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedColNames = Table.ExpandRecordColumn(ConvertedColsToTable, "Column1", {"n"}, {"n"}),
    colNames = ExpandedColNames[n],
    rows = childNode[rows],
    ConvertedListToTable = Table.FromList(rows, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedListOfFields = Table.ExpandRecordColumn(ConvertedListToTable, "Column1", {"fld"}, {"fld"}),
    rowCount = Table.RowCount(ExpandedListOfFields),
    transposeRecords = (n as number) =>
        let
            fld = ExpandedListOfFields{n}[fld],
            ConvertedFldToTale = Table.FromList(fld, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
            TransposedFldTable = Table.Transpose(ConvertedFldToTale),
            ExpandedTrend = Table.ExpandRecordColumn(TransposedFldTable, "Column1", {"v"}, {"v"}),
            ExpandedTime = Table.ExpandRecordColumn(ExpandedTrend, "Column2", {"v"}, {"v.1"}),
            ExpandedName = Table.ExpandRecordColumn(ExpandedTime, "Column3", {"v"}, {"v.2"}),
            ConvertedToRecord = Table.ToRecords(ExpandedName)
        in
            ConvertedToRecord,
    listOfFields = 
        List.Generate(
            ()=>
                [
                    n = 0,
                    records = transposeRecords(n)
                ],
                each [n] < rowCount,
                each [
                    n = [n] + 1,
                    records = transposeRecords(n)
                ]
        ),
    ConvertedFldListToTable = Table.FromList(listOfFields, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedList = Table.ExpandRecordColumn(ConvertedFldListToTable, "Column1", {"records"}, {"records"}),
    ExpandedRecords = Table.ExpandListColumn(ExpandedList, "records"),
    ExpandedFldNameValues = Table.ExpandRecordColumn(ExpandedRecords, "records", {"v", "v.1", "v.2"}, colNames)
in
    ExpandedFldNameValues

Note: this looks like the results from an Excel file on SharePoint using the Excel REST service. That service also produces an html of your Excel table. To get the html version, append $format=html to the end of the Uri.

View solution in original post

2 REPLIES 2
tonmcg
Resolver II
Resolver II

This was a bit tricky. Each row object has an array of fields that needs to be transposed so each field becomes a column in a table.

 

So for each row, I essentially changed the format from this:

 

{
  "fld": [
    {
      "i": 0,
      "v": 5.320000171661377
    },
    {
      "i": 1,
      "v": "06-FEB-19 09:21:28.4"
    },
    {
      "i": 2,
      "v": "UDI_UT_3_601_001"
    }
  ]
}

to this:

 

{
  "fld": [
    {
      "v1": 5.320000171661377,
      "v2": "06-FEB-19 09:21:28.4",
      "v3": "UDI_UT_3_601_001"
    }
  ]
}

Here's the Power Query M equivalent I came up with. To work for your purposes, replace the jsonText and jsonBinary steps below with your JSON source:

 

let
    jsonText = "{""data"":[{""r"":""D"",""cols"":[{""i"":0,""n"":""ip_trend_value""},{""i"":1,""n"":""ip_trend_time""},{""i"":2,""n"":""name""}],""rows"":[{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:21:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:22:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:23:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.300000190734863},{""i"":1,""v"":""06-FEB-19 09:24:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:25:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:26:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:27:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.320000171661377},{""i"":1,""v"":""06-FEB-19 09:28:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.300000190734863},{""i"":1,""v"":""06-FEB-19 09:29:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]},{""fld"":[{""i"":0,""v"":5.309999942779541},{""i"":1,""v"":""06-FEB-19 09:30:28.4""},{""i"":2,""v"":""UDI_UT_3_601_001""}]}]}]}",
    jsonBinary = Text.ToBinary(jsonText),
    jsonDocument = Json.Document(jsonBinary),
    data = jsonDocument[data],
    childNode = data{0},
    cols = childNode[cols],
    ConvertedColsToTable = Table.FromList(cols, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedColNames = Table.ExpandRecordColumn(ConvertedColsToTable, "Column1", {"n"}, {"n"}),
    colNames = ExpandedColNames[n],
    rows = childNode[rows],
    ConvertedListToTable = Table.FromList(rows, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedListOfFields = Table.ExpandRecordColumn(ConvertedListToTable, "Column1", {"fld"}, {"fld"}),
    rowCount = Table.RowCount(ExpandedListOfFields),
    transposeRecords = (n as number) =>
        let
            fld = ExpandedListOfFields{n}[fld],
            ConvertedFldToTale = Table.FromList(fld, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
            TransposedFldTable = Table.Transpose(ConvertedFldToTale),
            ExpandedTrend = Table.ExpandRecordColumn(TransposedFldTable, "Column1", {"v"}, {"v"}),
            ExpandedTime = Table.ExpandRecordColumn(ExpandedTrend, "Column2", {"v"}, {"v.1"}),
            ExpandedName = Table.ExpandRecordColumn(ExpandedTime, "Column3", {"v"}, {"v.2"}),
            ConvertedToRecord = Table.ToRecords(ExpandedName)
        in
            ConvertedToRecord,
    listOfFields = 
        List.Generate(
            ()=>
                [
                    n = 0,
                    records = transposeRecords(n)
                ],
                each [n] < rowCount,
                each [
                    n = [n] + 1,
                    records = transposeRecords(n)
                ]
        ),
    ConvertedFldListToTable = Table.FromList(listOfFields, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    ExpandedList = Table.ExpandRecordColumn(ConvertedFldListToTable, "Column1", {"records"}, {"records"}),
    ExpandedRecords = Table.ExpandListColumn(ExpandedList, "records"),
    ExpandedFldNameValues = Table.ExpandRecordColumn(ExpandedRecords, "records", {"v", "v.1", "v.2"}, colNames)
in
    ExpandedFldNameValues

Note: this looks like the results from an Excel file on SharePoint using the Excel REST service. That service also produces an html of your Excel table. To get the html version, append $format=html to the end of the Uri.

Anonymous
Not applicable

Thanks for the answer
It worked very well. It really is a REST service, but I do not know the technology used, but your solution solved the problem!

Helpful resources

Announcements
August Power BI Update Carousel

Power BI Monthly Update - August 2025

Check out the August 2025 Power BI update to learn about new features.

August 2025 community update carousel

Fabric Community Update - August 2025

Find out what's new and trending in the Fabric community.