COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'utf8mb4'
原因：数据库编码不一致 查看字符集： 解决办法：修改配置文件(追加以下内容) 修改后重新查看字符集 show variables like 'character\_set\_%'; 重启服务重新测试 ...
原文：SQLSTATE[42000]: Syntax error or access violation: 1253 COLLATION 'utf8mb4_unicode_ci' is not valid for CHARACTER SET 'binary'
SQLSTATE : Syntax error or access violation: COLLATION utf mb unicode ci is not valid for CHARACTER SET binary 对数据表更改，然后执行数据迁移命令php artisan migrate，之后报错如下： 解决办法： 参考：https: www.hellojava.com a .html ...
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