mysql以utf-8字符集创建数据库

CREATE DATABASE 的语法：

CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name
[create_specification [, create_specification] ...]
create_specification:
[DEFAULT] CHARACTER SET charset_name
| [DEFAULT] COLLATE collation_name

创建utf-8字符集数据库

CREATE DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

对已有的数据库更改字符编码

ALTER DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci