mysql 语句书写规范

CREATE DATABASE `school`;

USE `school`;

//创建表的时候前面的参数``tab键上面的反顿点符号；

CREATE TABLE `students2`(
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
`name` VARCHAR(20) NOT NULL,
`nickname` VARCHAR(20) NULL,
`sex` CHAR(1) NULL,
`in_time` DATETIME NULL
) CHARSET 'UTF8';

//表的实例参数都用‘’双引号键对应的那个单引号；
INSERT INTO `students2` (`name`,`nickname`,`sex`,`in_time`) VALUES
('张三丰','三哥哥','男',now()),
('张万年','三哥哥','男',now()),
('张德江','三哥哥','男',now()),
('张作霖','三哥哥','男',now()),
('张国立','三哥哥','男',now())
;

SELECT * FROM `students2`;

SELECT `name`,`nickname` FROM `students2` where `id`='10';