Forum Discussion
Removing columns from text import with Power Query, does Power BI have to read all columns first?
Hi folks, If you import a csv in Power BI, then in Power Query select to remove columns, does Power BI have to read all the columns first as it processes the file, and then remove them? This ...
Hello Anonymous
i think that when the data source is a file there is no way to speed up. So no query folding etc.
Do you any other transforming on the data like Table.AddColumn etc?
If yes, then try to put Table.Buffer around your 2nd step
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Kudoes are nice too
Have fun
Jimmy