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muskrat's data eng expert's hard drive overheats while processing 60k rows
(lemmy.dbzer0.com)
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this post was submitted on 16 Mar 2025
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I'm a data engineer that processes 2 billion row 3000 column datasets every day, and I open shit in Excel with more than 60k rows. What the hell is this chick talking about?
Some interesting facts about excel I learned the hard way.
Not really related to what you said, but I'm still sore about the bad data import that caused me days of work to clean up.
The row limitation seems, to me, like an actually-good thing. Excel is for data where you might conceivably scroll up and down looking at it and 1M is definitely beyond the ability of a human even to just skim looking for something different.
An older version of Excel could only handle 64k rows and I had a client who wanted large amounts of data in Excel format. "Oh sorry, it's a Microsoft limitation," I was thrilled to say. "I have no choice but to give you a useful summarization of the data instead of 800k rows (each 1000 columns wide) of raw data."
Some time ago, I heard a story of CS and Econ professors having lunch together. The Econ professor was excited that Excel was going to release a version that blew out the 64k row limit. The CS professor nearly choked on his lunch.
Dependence on Excel has definitely caused bad papers to be published in the Econ space, and has had real world consequences. There was a paper years ago that stated that once a country's debt gets above 120% of GDP, its economy goes into a death spiral. It was passed around as established fact by the sorts of politicians who justify austerity. Problem was, nobody could reproduce the results. Then an Econ undergrad asked the original author for their Excel spreadsheet, and they found a coding error in the formulas. Once corrected, the conclusion disappeared.