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A comment on Be Careful with UUID or GUID as Primary Keys. Parent comment

Re:Be Careful with UUID or GUID as Primary Keys by kpcyrd on Friday June 09, 2017 @11:54PM (#14526086)
The name VARCHAR is confusing since it's not properly defined what a character is. 1 byte? Something on the unicode table? If it'd be named VARBYTE(255) it would be pretty obvious that a 255-emoji-string insert would fail.

https://eev.ee/blog/2015/09/12/dark-corners-of-unicode/

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