创建数据库时指定编码方式

CREATE DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE 
utf8_general_ci;

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