Power Query - import from folder and add to static table

[bark01]

I have a daily import report that i save to a folder and then use power query to append all the daily files and transform them. However I'm importing and transforming all the tables every time i need an update. The onyl change would be the newer files.

Is there any way to have power query only import and transform new tables and leave the data its already imported in the date table?

I might be thinking about this wrong way, mu other thought would be to have power query import new tables, transform them and save them as one static report and then have another query that combines all the static reports (no transformation necessary). Not sure how to go about designing that can power query in excel export to and save as a csv rather than an excel.

My current process works and ists just open excel model and click refresh, its just taking longer and longer to run. I don't want to adda lot of complexity to the day to day process but would like it to run end to end faster.

 

[SullyWYO]

I might be thinking about this wrong way, mu other thought would be to have power query import new tables, transform them and save them as one static report and then have another query that combines all the static reports (no transformation necessary). Not sure how to go about designing that can power query in excel export to and save as a csv rather than an excel.

Unfortunately, this is the only solution I have found for this problem. I have 30-40k rows that I compile every day into a summary. Then I put the resulting file into a "Compiled" folder, sorted by date. Then I use an additional query to gather all the data from the summaries. It takes two steps, but is much faster in the end.