I feel like I need to test this now, but my gut feel is csv. Given that it is a flat file, there should be a lot less overhead vs the more complicated...
Ken Puls Today, 04:03 AMyes i understand post 2...
rj1600 Today, 03:02 AMI have the opportunity to either read my datasource from a CSV file or an Excel file (2007 or 2019).
Which would be better as far as performance...
Well, I'd be happy to do that, but I can't find a way to edit my original post to add the link.......
But, here it is - https://www.excelforum.com/excel-for...-new-post.html...
Datasource: XLS(x) vs CSV?
Okay, so based on a pretty simple data set with 4 columns and 958,751 rows...
Ken Puls Today, 04:16 AMLoading from CSV took 9.3 seconds on average vs 13.4 seconds...