データの分析、グラフ作成、および通信のためのツールを備えた Microsoft 表計算ソフトウェアのファミリ。
Daisuke701さん、こんばんは。
PowerPivot をCSVで取り込む時に255列までしか正常に取り込めないのですね。
調べました所、以下のページが見つかりました。
(※必要に応じて<Bing翻訳>などご利用下さい。)
■ How many columns in a CSV should Powerpivot support?
I have confirmed that the 255 columns that are imported is the default for the ACE 14 OLE DB provider for Microsoft Access which is the provider used when your data source is a .csv or .xlsx file. I was able to work around this default by first importing the data into Excel, formatting the data as a table, then creating a linked table in PowerPivot.
■ 255 Column Limit with ACE 14 OLE DB Provider
https://forum.powerpivotpro.com/forums/topic/255-column-limit-with-ace-14-ole-db-provider/
There’s a work-around. In workbook B, link to the PowerPivot table range in workbook A. Convert the workbook B range to a table. Finally, in workbook B create a linked table in PowerPivot. All 255+ columns will be added to a PowerPivot table.