Json to excel using power query

问题:

I have some json on a website that i want to convert to excel using the power query option from web. But I ran into a small problem. My json looks like this:

[
    {
        "id" : 1,
        "visitors" : 26,
        "some_number" : 1,
        "value" : 3500
    },
    {
        "id" : 2,
        "visitors" : 21,
        "some_number" : 5,
        "value" : 2000
    }
]

but when i use from web i get this:

I can drill down into a record,convert it to a table, transpose and use first row as header but then i get just one row. How can i get all of my data to the table and not just one row?

回答1:

First I would use the List Tools / Transform menu (it should be automatically selected) and click the To Table button. This will give you a single-column table with 2 rows. Then I would click the small Expand button - it will appear in the column headings, just to the right of "Column1". Uncheck the Use original column name ... option and you will get a table of 4 columns and 2 rows.

Here's the full script I generated:

let
    Source = Json.Document(File.Contents("C:\Users\Mike.Honey\Downloads\json2.json")),
    #"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    #"Expanded Column2" = Table.ExpandRecordColumn(#"Converted to Table", "Column1", {"id", "visitors", "some_number", "value"}, {"id", "visitors", "some_number", "value"})
in
    #"Expanded Column2" 

回答2:

The Table.FromRecords() function is suitable for that sample data:

let 
    Source = Json.Document("[{""id"": 1, ""visitors"": 26, ""some_number"": 1, ""value"": 3500}, {""id"": 2, ""visitors"": 21, ""some_number"": 5, ""value"": 2000}]"),
    AsTable = Table.FromRecords(Source)
in
    AsTable

回答3:

You need to convert the list to a table first, then you can expand the record column and proceed from there. If no luck, then you can take a look at this video I created recently for a similar question.