英文:
Power Query expand list of records
问题
这是一个非常基本的问题，但我找不到答案。我正在使用Power Query编辑器，但其中大部分字段都是灰色的，我无法按照我想要的方式编辑表格。请参见下面的截图：
我的目标是展开各个记录，我已经看过一些YouTube视频，可以通过添加新列来实现，但显然该字段已经变成灰色。我在Power Query中输入的链接是：
英文:
This is a very basic question but can't find an answer to this. I am using the power query editor but most of the fields in it are greyed out and I cannot edit the table as I want to. See below:
My objective here is to expand the individual records and I have already seen some youtube videos where this can be achieved by adding a new column but apparently that field has been greyed out. The link that I am entering in power query is this:
答案1
得分: 1
你需要将“..”转换为表格以取消大多数选项的灰色，然后你可以展开。
以下是可以尝试粘贴到主页高级编辑器中的示例通用代码：
let Source = {[ a = 1, b = 2 ] , [ c = 3 ] , [ a = 1, b = 2, c = 3 ]},
"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error) ,
ExpandList= List.Distinct(List.Combine(List.Transform(Table.Column( "Converted to Table", "Column1"), each if _ is record then Record.FieldNames(_) else {}))),
Expand= Table.ExpandRecordColumn( "Converted to Table", "Column1", ExpandList,ExpandList)
in Expand
或者在你的具体情况下：
let Source = Json.Document(Web.Contents("https://api.sportsdata.io/v3/mlb/scores/json/TeamSeasonStats/2018?key=fa737459090340c0a435e6bf25b15baf")),
"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error) ,
ExpandList= List.Distinct(List.Combine(List.Transform(Table.Column( "Converted to Table", "Column1"), each if _ is record then Record.FieldNames(_) else {}))),
Expand= Table.ExpandRecordColumn( "Converted to Table", "Column1", ExpandList,ExpandList)
in Expand
英文:
You need to Transform .. To Table ... to ungrey most of the options
Then you can expand.
Sample generic code you can try out by pasting into home ... advanced editor...
let Source = {[ a = 1, b = 2 ] , [ c = 3 ] , [ a = 1, b = 2, c = 3 ]},
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error) ,
ExpandList= List.Distinct(List.Combine(List.Transform(Table.Column( #"Converted to Table", "Column1"), each if _ is record then Record.FieldNames(_) else {}))),
Expand= Table.ExpandRecordColumn( #"Converted to Table", "Column1", ExpandList,ExpandList)
in Expand
Or in your specific case
let Source = Json.Document(Web.Contents("https://api.sportsdata.io/v3/mlb/scores/json/TeamSeasonStats/2018?key=fa737459090340c0a435e6bf25b15baf")),
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error) ,
ExpandList= List.Distinct(List.Combine(List.Transform(Table.Column( #"Converted to Table", "Column1"), each if _ is record then Record.FieldNames(_) else {}))),
Expand= Table.ExpandRecordColumn( #"Converted to Table", "Column1", ExpandList,ExpandList)
in Expand
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