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You'll regret using natural keys
(blog.ploeh.dk)
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this post was submitted on 20 Jun 2024
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Programming
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Speaking of car plates, the Wikipedia pages for "Vehicle license plates of [insert country here]" are a rabbit hole.
I was just reading the page for Romania the other day, speaking of uniqueness, and they had this issue apparently where the combinations overall were enough for the whole country but not enough for their capital city, so they had to hack an extra digit into the plates for the capital.
Seeing as just five alphanumeric symbols gets you over 60 million variations, exactly how the hell did they fuck up that hard
60M total but divided among 40 counties makes 1.5M variations per county and the capital city (which is its own county, like Berlin) went over that.
I looked it up and Bucharest actually has only a 1.7M population so... I think it's understandable that nobody expected an almost 1:1 person-to-car ratio. Exactly why and how they reached that crazy ratio I have no idea. ๐
Told you it's a crazy rabbit hole.
Ah Ok, so the mistake was allotting per county.