Looking for tips on using folder as data source

If you need all of the files in the folder, not much you can do. But if you only need some of the files, if the file names or other criteria, like the file date.

FOr example, in this M code, I am doing about 8-9 things where I filter for two files that begin with the letters M and P, get the latest of each, then combine (append) them into a single listing in Sharepoint, and then I hit the Combine button, where the red square is. That is where Power Query creates all of its custom steps for the combine operation. So hundreds of files, but only two get processed each refresh.

Hello G_Whit-UK 

what I'm always doing is the following

- first only filter for files your really need

- create a function to read from your CSV-file (maybe already removing columns, filtering, etc.)

- apply this funciton on the files found in the folder as a new column

- combine the tables created in your new column

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy