3、MySQL字符集和校对规则_mysql修改数据库字符集和校对规则-CSDN博客

show create database chat_proxy_test;

CREATE DATABASE `chat_proxy_test` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci

CREATE DATABASE `chat_proxy_test`  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci