使用ckan web内容如何使用带有group by的sql对数字列中的值求和

Question

收到错误消息：使用 Power BI Power Query 的此连接导致冲突

let  Fonte = Json.Document(Web.Contents("https://dadosabertos.aneel.gov.br/api/3/action/datastore_search_sql?sql=SELECT " & """DscClasseConsumo"", ""CodClasseConsumo""," & """sum(MdaPotenciaInstaladaKW)""" & " from ""b1bd71e7-d0ad-4214-9053-cbd58e9564a7""" & "group by ""DscClasseConsumo"" ,""CodClasseConsumo""")),
#"Convertido para Tabela" = Table.FromRecords({Fonte}),
#"result Expandido" = Table.ExpandRecordColumn(#"Convertido para Tabela", "result", {"sql", "records", "fields"}, {"result.sql", "result.records", "result.fields"})
in
#"result Expandido"

Answer 1

您的代码评估为

https://dadosabertos.aneel.gov.br/api/3/action/datastore_search_sql?sql=SELECT "DscClasseConsumo", "CodClasseConsumo","sum(MdaPotenciaInstaladaKW)" from "b1bd71e7-d0ad-4214-9053-cbd58e9564a7"group by "DscClasseConsumo" ,"CodClasseConsumo"

“sum(MdaPotenciaInstaladaKW)”应该做什么？它在引号内，因此不会被评估，但如果是的话，powerquery 中就没有求和运算