创建表的规范写法

CREATE TABLE [IF NOT EXISTS] tbl_name(
字段名称 字段类型 [UNSIGNED|ZEROFILL] [NOT NULL] [DEFAULT 默认值] [[PRIMARY] KEY| UNIQUE [KEY]] [AUTO_INCREMENT]
)ENGINE=INNODB CHARSET=UTF8 AUTO_INCREMENT=100;

如：
CREATE TABLE IF NOT EXISTS user10(
id SMALLINT UNSIGNED KEY AUTO_INCREMENT,
username VARCHAR(20) NOT NULL UNIQUE,
password CHAR(32) NOT NULL,
email VARCHAR(50) NOT NULL DEFAULT ‘382771946@qq.com’,
age TINYINT UNSIGNED DEFAULT 18,
sex ENUM(‘男’,’女’,’保密’) DEFAULT ‘保密’,
addr VARCHAR(200) NOT NULL DEFAULT ‘北京’,
salary FLOAT(6,2),
regTime INT UNSIGNED,
face CHAR(100) NOT NULL DEFAULT ‘default.jpg’
);