//查看字段编码 SHOW FULL COLUMNS from park_car_user;
//查看数据库字段
SHOW CREATE DATABASE db_name;
//查看表的编码
SHOW CREATE TABLE tbl_name;
[client] default-character-set=gbk port=3306 [server] default-character-set=gbk port=3306 [mysql] default-character-set=gbk [mysqld] port=3306 basedir=C:/Program Files/MySQL/mysql/ datadir=C:/Program Files/MySQL/mysql/data/ default-character-set=gbk default-storage-engine=INNODB
ALTER TABLE tbl_name DEFAULT CHARACTER SET charset_name [COLLATE collation_name];
//修改表中所有字段的编码为utf8
ALTER TABLE park_car_user CONVERT TO CHARACTER SET utf8;
原文：https://www.cnblogs.com/dashuai01/p/8856427.html