最近跟项目，写后台需要用到sql语句，就整理了一下mysql建表常用sql语句，并写几个可执行sql脚本，方便日后复习查看以及使用：
连接：mysql -h主机地址 -u用户名 －p用户密码 （注:u与root可以不用加空格，其它也一样）
断开：exit （回车）
创建授权：grant select on 数据库.* to 用户名@登录主机 identified by \"密码\"
修改密码：mysqladmin -u用户名 -p旧密码 password 新密码
删除授权: revoke select,insert,update,delete om *.* from test2@localhost;
显示数据库：show databases;
显示数据表：show tables;
显示表结构：describe 表名;
创建库：create database 库名;
删除库：drop database 库名;
使用库(选中库)：use 库名;
创建表：create table 表名 (字段设定列表);
删除表：drop table 表名;
修改表：alter table t1 rename t2
查询表：select * from 表名;
清空表：delete from 表名;
备份表: mysqlbinmysqldump -h(ip) -uroot -p(password) databasename tablename > tablename.sql
恢复表: mysqlbinmysql -h(ip) -uroot -p(password) databasename tablename < tablename.sql（操作前先把原来表删除）
增加列：alter table t2 add c int unsigned not null auto_increment,add index (c);
修改列：alter table t2 modify a tinyint not null, change b c char(20);
删除列：alter table t2 drop column c;
备份数据库：mysql\bin\mysqldump -h(ip) -uroot -p(password) databasename > database.sql
恢复数据库：mysql\bin\mysql -h(ip) -uroot -p(password) databasename < database.sql
复制数据库：mysql\bin\mysqldump --all-databases > all-databases.sql
修复数据库：mysqlcheck -a -o -uroot -p54safer
文本数据导入： load data local infile \"文件名\" into table 表名;
数据导入导出：mysql\bin\mysqlimport database tables.txt
以下为mysql的可执行脚本示例：
1.创建用户表示例
//创建用户表示例 /* navicat mysql data transfer source server : localhost_1111 source server version : 50717 source host : localhost:1111 source database : maven target server type : mysql target server version : 50717 file encoding : 65001 date: 2018-08-15 22:40:44 */ set foreign_key_checks=0; -- ---------------------------- -- table structure for user -- ---------------------------- drop table if exists `user`; create table `user` ( `pk_id` int(10) not null auto_increment, `username` varchar(30) not null, `password` char(32) not null, `age` int(3) default null, `info` varchar(255) character set utf8mb4 default null, `createtime` timestamp null default null on update current_timestamp, `modifytime` timestamp null default null on update current_timestamp, `sex` char(1) default null, primary key (`pk_id`) ) engine=innodb auto_increment=34 defa
2.创建公司网站主页栏目示例
//某公司网站主页栏目示例 set foreign_key_checks=0; -- ---------------------------- -- table structure for home -- ---------------------------- drop table if exists `home`; create table `home` ( `home_id` int(10) not null auto_increment, `profile` longtext comment '企业简介', `scope` longtext comment '经营范围', `product` longtext comment '产品介绍', `cooperate` longtext comment '校企合作', `extension` longtext comment '其他', primary key (`home_id`) ) engine=innodb auto_increment=34 default charset=utf8;
3.创建店铺商品实例
//某电商平台店铺商品实例
create database store; #创建数据库store
use store;
set names utf8;
drop table if exists goods;
create table goods
(
id mediumint unsigned not null auto_increment comment 'id',
goods_name varchar(150) not null comment '商品名称',
market_price decimal(10,2) not null comment '市场价格',
shop_price decimal(10,2) not null comment '本店价格',
goods_desc longtext comment '商品描述',
is_on_sale enum('是','否') not null default '是' comment '是否上架',
is_delete enum('是','否') not null default '否' comment '是否放到回收站',
addtime datetime not null comment '添加时间',
logo varchar(150) not null default '' comment '原图',
sm_logo varchar(150) not null default '' comment '小图',
mid_logo varchar(150) not null default '' comment '中图',
big_logo varchar(150) not null default '' comment '大图',
mbig_logo varchar(150) not null default '' comment '更大图',
primary key (id),
key shop_price(shop_price),
key addtime(addtime),
key is_on_sale(is_on_sale)
)engine=innodb default charset=utf8 comment '商品';
drop table if exists brand;
create table brand
(
id mediumint unsigned not null auto_increment comment 'id',
brand_name varchar(30) not null comment '品牌名称',
site_url varchar(150) not null default '' comment '官方网址',
logo varchar(150) not null default '' comment '品牌logo图片',
primary key (id)
)engine=innodb default charset=utf8 comment '品牌';
4.餐厅点餐菜单示例
//餐厅点餐菜单示例
/*
sqlyog 企业版 - mysql gui v8.14
mysql - 5.5.27 : database - db_food
*********************************************************************
*/
/*!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_food` /*!40100 default character set utf8 */;
use `db_food`;
/*table structure for table `goods` */
drop table if exists `goods`;
create table `goods` (
`id` int(10) not null auto_increment,
`goodsname` varchar(100) default null,
`price` float default null,
`goodsdesc` varchar(200) default null,
`imagelink` varchar(500) default null,
primary key (`id`)
) engine=innodb auto_increment=12 default charset=utf8;
/*data for the table `goods` */
insert into `goods`(`id`,`goodsname`,`price`,`goodsdesc`,`imagelink`) values (3,'宫保鸡丁',21,'宫保鸡丁哦','d:\\我的文档\\desktop\\food\32059684_58.jpg'),(5,'青椒肉丝',22,'青椒肉丝不好吃','d:\\我的文档\\desktop\\food\32059684_58.jpg'),(8,'21',2,'sd cd','d:\\我的文档\\desktop\\food\32059994_53.jpg'),(9,'鱼香肉丝',9,'四川风味','d:\\我的文档\\desktop\\food\32060047_92.jpg'),(10,'回锅肉',12,null,null),(11,'热狗肠',32,'说的','d:\\我的文档\\desktop\\food\32060176_81.jpg');
/*table structure for table `order_goods` */
drop table if exists `order_goods`;
create table `order_goods` (
`id` int(10) not null auto_increment,
`orderid` varchar(50) default null,
`goodstotalprice` float default null,
`goodsid` int(10) default null,
`goodsprice` float default null,
`goodsnum` int(10) default null,
`goodsname` varchar(100) default null,
primary key (`id`),
key `fk_order_goods_2` (`orderid`),
key `fk_order_goods_1` (`goodsid`),
constraint `fk_order_goods_1` foreign key (`goodsid`) references `goods` (`id`),
constraint `fk_order_goods_2` foreign key (`orderid`) references `order_info` (`orderid`)
) engine=innodb auto_increment=44 default charset=utf8;
/*data for the table `order_goods` */
insert into `order_goods`(`id`,`orderid`,`goodstotalprice`,`goodsid`,`goodsprice`,`goodsnum`,`goodsname`) values (23,'20130708001514',12,10,12,1,'回锅肉'),(28,'20130708021437',12,10,12,1,'回锅肉'),(31,'20130708110510',22,5,22,1,'青椒肉丝'),(32,'20130708110510',9,9,9,1,'鱼香肉丝'),(33,'20130708110513',12,10,12,1,'回锅肉'),(34,'20130708110513',32,11,32,1,'热狗肠'),(39,'20130708115503',2,8,2,1,'21'),(40,'20130708115508',12,10,12,1,'回锅肉'),(41,'20130708115508',32,11,32,1,'热狗肠'),(42,'20130708115512',22,5,22,1,'青椒肉丝'),(43,'20130708121456',9,9,9,1,'鱼香肉丝');
/*table structure for table `order_info` */
drop table if exists `order_info`;
create table `order_info` (
`orderid` varchar(50) not null,
`orderstatus` int(10) default null,
`ordernum` int(10) default null,
`ordertotalmoney` float default null,
`username` varchar(100) default null,
primary key (`orderid`)
) engine=innodb default charset=utf8;
/*data for the table `order_info` */
insert into `order_info`(`orderid`,`orderstatus`,`ordernum`,`ordertotalmoney`,`username`) values ('20130708001514',3,1,12,'admin1'),('20130708021437',1,1,12,'admin1'),('20130708110510',2,2,31,'aaa'),('20130708110513',3,2,44,'aaa'),('20130708115503',1,1,2,'admin1'),('20130708115508',4,2,44,'admin1'),('20130708115512',3,1,22,'admin1'),('20130708121456',4,1,9,'admin1');
/*table structure for table `user` */
drop table if exists `user`;
create table `user` (
`id` int(10) not null auto_increment,
`username` varchar(100) default null,
`password` varchar(50) default null,
`email` varchar(200) default null,
`rank` int(1) default '0',
primary key (`id`)
) engine=innodb auto_increment=10 default charset=utf8;
/*data for the table `user` */
insert into `user`(`id`,`username`,`password`,`email`,`rank`) values (1,'admin','123',null,1),(8,'aaa','123','ad@1.com',0),(9,'admin1','123',null,0);
/*!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 */;
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