> create database testdb;
> create database if not exists testdb;
> create database if not exists testdb default character set utf16;
> show database;
#列出创建对应数据库的sql语句
> show create database testdb;
#查看可用的字符集命令
> show character set;
#查看排序方式的命令
> show collation;
#修改字符集
> show variables like ‘character%‘;
> alter database testdb character set utf8
> alter database testdb default character set utf8;
drop database if exists testdb;
原文:https://www.cnblogs.com/kcxg/p/10360201.html