If you regularly download CSV files from a database, or receive a number of CSV files containing similar information, you might need to combine all of those files into one larger file. The ability to merge CSV files automatically can be a big time and sanity saver, almost as much as setting a print area in Excel to fix a spreadsheet that isn’t printing well. I recently encountered a situation where I had a large amount of data that was split up into about 100 different CSV files, each of which contained the same number of rows with the same type of data in each row. Each CSV file represented an order from a company, and my company needed to be able to quickly sort all of that data into one file. The combined data could then be organized into a pivot table so that our production team knew how much of each product they needed to make. Your reasons for doing this may vary, but it can be the simplest solution if you need to combine and sort a lot of data. Rather than opening each file individually, then copying and pasting all of the data into one file, you can automate the process with the command prompt. Having witnessed someone manually copy and paste all of the data from multiple CSV files into one CSV file, I know that the ability to merge CSV files is one that can be a huge time saver.
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