hi, guys Just as the title indicates. The customer wants to read several relatively large CSV files to obtain data. A csv file has approximately several hundred thousand rows, but the number of columns is fixed. For this reason, I’m not sure if there is a good way to read CSV files instead of ope…

The Loupe team ( Home | Loupe ) created this library ( GitHub - loupeteam/CSVFileLib: AR Library for reading and writing variable values to and from CSV files ) that might provide you something. I personally haven’t used it. I’ve used several other custom libraries written by B&R regional offices or B&R…

Hi there, unfortunately I think the only possible way is to handle them via FileIO. To my knowledge there is no library that can handle such a thing for you. Best regards

Perhaps, as you said, there may not be a suitable library to do this for the time being. But using fileIO to handle such a large csv is really unwise. To be honest, it’s just too stupid. fileIO does not provide the readline method, and it also cannot know how many lines there are in the file. The…

I know that this is not a nice API for CSV in general, but file reading can also occur in chunks - and the processing be done so as well. (and FileReadEx also tells you when it read less than the bytes requested). CSV is a really flexible format allowing for many different columns and rows to be st…

Hello all, long time ago when such mpTools for csv didn´t really exist i build my own system. The most important was that when you read the file by fileio lib i put all the Data in Memory area which i tooked from tmp_alloc and after i parse the data in a double chained list in order to have access…

How to read a large CSV file

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jianing.kang (Heseri) August 29, 2025, 9:35am 8

The good news is that the customer’s CSV is a serialized and regular format.
Let me take the solution provided by Loupe team

Tks

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How to read a large CSV file

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