很多mysql语句用的时候想不起来，现在用个简单的例子记着。

/*
SQLyog Ultimate v11.33 (64 bit)
MySQL - 5.1.49-community : Database - db_book
*********************************************************************
*/

/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`db_book` /*!40100 DEFAULT CHARACTER SET utf8 */;

USE `db_book`;

/*Table structure for table `t_book` */

DROP TABLE IF EXISTS `t_book`;

CREATE TABLE `t_book` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`bookName` varchar(20) DEFAULT NULL,
`author` varchar(20) DEFAULT NULL,
`sex` varchar(10) DEFAULT NULL,
`price` float DEFAULT NULL,
`bookDesc` varchar(1000) DEFAULT NULL,
`bookTypeId` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `FK_t_book` (`bookTypeId`),
CONSTRAINT `FK_t_book` FOREIGN KEY (`bookTypeId`) REFERENCES `t_booktype` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;

/*Data for the table `t_book` */

insert into `t_book`(`id`,`bookName`,`author`,`sex`,`price`,`bookDesc`,`bookTypeId`) values (2,'Java编程思想1','JJ1','女',111,'这个一本好书籍1',1),(3,'美女的生活1','呵呵2','女',121,'11112',2),(4,'java代码','风格','女',120,'是',1),(6,'java编程思想','美女','女',100,'搜索',2);

/*Table structure for table `t_booktype` */

DROP TABLE IF EXISTS `t_booktype`;

CREATE TABLE `t_booktype` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`bookTypeName` varchar(20) DEFAULT NULL,
`bookTypeDesc` varchar(1000) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;

/*Data for the table `t_booktype` */

insert into `t_booktype`(`id`,`bookTypeName`,`bookTypeDesc`) values (1,'计算机类2','计算机类书籍3'),(2,'建筑类2','建筑类图书2'),(3,'计算机科学2','2');

/*Table structure for table `t_user` */

DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`userName` varchar(20) DEFAULT NULL,
`password` varchar(20) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

/*Data for the table `t_user` */

insert into `t_user`(`id`,`userName`,`password`) values (1,'java1234','123456');

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;