I'm working with a large CSV file that has 10,000 rows and I need to run some PowerShell commands on 50 rows each day. Once I process those rows, they'll be deleted from the file, and I want to make sure I don't repeat any rows until I've gone through all of them. What's the best way to set this up?
5 Answers
If memory isn't a huge issue for you, load the entire CSV and use a for loop to handle 50 rows at a time, exporting the processed data to a new file. You can keep track of your position with a simple counter and rename your outputs as needed.
You could run a script that takes the entire CSV and splits it into chunks of 50 rows each. This way, the next day you can just process the next chunk without messing with the original file too much. It would also give you a clearer idea of what’s left to process.
Why specifically 50 rows per day? If you're aiming for a regulated flow, maybe look into setting a script that tracks your progress in a JSON file so you can pick up from where you left off each day. That way, you won't miss any rows in your CSV.
Agreed, using a progress tracker can simplify things, especially for such a large dataset. Keeps your workflow smooth!
A simple way to handle this is to rewrite the CSV each day, removing the 50 rows you've already processed. You can import the CSV, make your changes, and then export it back. Just keep track of which rows you've already handled to ensure you don't go back over them.
Yeah, that sounds straightforward! Just loop through the CSV, edit the lines you need, and save it back. Pretty effective method.
Consider using two scripts—one to split your CSV up into smaller files with 50 rows each, and the other to process those files one at a time and delete them when done. That might keep things organized and manageable for your daily tasks.
That's sort of where I'm stuck too! I've been manually splitting things up but really want to automate this with a scheduled task to save time.