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1267-Illegal mix of collations (utf8mb4_general_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLIC for o...

2023-02-18 15:36:40 时间

今天LEFT JOIN 表,报如下错误: 1267-Illegal mix of collations (utf8mb4_general_ci,IMPLICIT) and (utf8mb4_0900_ai_ci,IMPLIC for operation '=')

出现这种问题就是关联表的字符集不匹配
1.查看数据库的字符集
show variables where Variable_name like 'collation%';

结果:

2.查看关联表字符集
 show create table table_name;
3.给关联表设置字符编码
alter table table_name default character set utf8mb4 collate=utf8mb4_general_ci;
4.给关联表字段设置字符编码
 ALTER TABLE table_name convert to CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;