查询字符编码

​​SHOW VARIABLES WHERE Variable_name LIKE 'character_set_%' OR Variable_name LIKE 'collation%'; ​​

修改数据库字符编码

​​ALTER DATABASE soc CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;​​

修改表字符编码

​​ALTER TABLE sys_project_info CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;​​