![1273 - Unknown collation : 'utf8mb4_0900_ai_ci' | Issue Fixed | Database Import Issue | Solved - YouTube 1273 - Unknown collation : 'utf8mb4_0900_ai_ci' | Issue Fixed | Database Import Issue | Solved - YouTube](https://i.ytimg.com/vi/e3k9Awa3Z3s/hqdefault.jpg)
1273 - Unknown collation : 'utf8mb4_0900_ai_ci' | Issue Fixed | Database Import Issue | Solved - YouTube
![After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow](https://i.stack.imgur.com/HMjaM.png)
After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow
![After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow](https://i.stack.imgur.com/iyZ0R.png)
After migration to MySql 8 from 5.7 - Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLICIT) for operation '=' - Stack Overflow
![Which encoding to choose in MySQL - utf8 or utf8mb4 (utf8mb4_general_ci, utf8mb4_unicode_ci or utf8mb4_0900_ai_ci). How do they differ, how are they decoded and possible errors - Eqsash Which encoding to choose in MySQL - utf8 or utf8mb4 (utf8mb4_general_ci, utf8mb4_unicode_ci or utf8mb4_0900_ai_ci). How do they differ, how are they decoded and possible errors - Eqsash](https://eqsash.com/custom/files/images/articles/kakuyu-kodirovku-vybrat-v-mysql.jpg)
Which encoding to choose in MySQL - utf8 or utf8mb4 (utf8mb4_general_ci, utf8mb4_unicode_ci or utf8mb4_0900_ai_ci). How do they differ, how are they decoded and possible errors - Eqsash
![ERROR 1273 (HY000): Unknown collation: 'utf8mb4_0900_ai_ci'_jerry-89的博客-CSDN博客_error 1273 (hy000): unknown collation: 'utf8mb4_09 ERROR 1273 (HY000): Unknown collation: 'utf8mb4_0900_ai_ci'_jerry-89的博客-CSDN博客_error 1273 (hy000): unknown collation: 'utf8mb4_09](https://img-blog.csdnimg.cn/img_convert/063ce5dabf0f3198656118fe49b96c53.png)