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MySQL import database error [err] 1273 - unknown collation: 'utf8mb4_ 0900_ ai_ ci’
2022-07-06 15:50:00 【Bean bag programmer】
Recently, some people asked , Why is it involved in importing mysql The script will appear [Err] 1273 – Unknown collation: ‘utf8mb4_0900_ai_ci’, So today I will explain this problem in detail ,
Speaking of this question , We need to understand mysql Some of the principles . The general functional requirement is that we need to import our database script , And you need a successful import to run the project . Then why when importing , He will make mistakes .
With This question , Please read the following article carefully , Seriously understand .
Data exported by high version , such as mysql8, To mysql5.7 Error will be reported after recovery
[Err] 1273 - Unknown collation: 'utf8mb4_0900_ai_ci'
I know it's about character set encoding , But I changed the code of the database to utf8mb4 It also reports an error after importing , When importing the file, there is no utf8mb4 Options
baidu Then we found the solution .
Solution :
Put all in the file
utf8mb4_0900_ai_ci Switch to utf8_general_ci
utf8mb4 Switch to utf8
Run again after saving to succeed .
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