创建一个utf-8字符集的数据库
create database car default character set utf8 collate utf8_general_ci;
创建一个utf-8字符集的数据表
use car;
create table car_info(
name varchar(20),
x_position float,
y_position float,
time varchar(20)
)character set utf8 collate utf8_general_ci;