session范围
查看数据库编码:
show variables like '%char%';
# MySQL 5.7 字符集强制配置
# 修复 character_set_database=latin1 等问题
[mysqld]
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect = 'SET NAMES utf8mb4'[client]
default-character-set = utf8mb4[mysql]
default-character-set = utf8mb4