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这篇文章主要讲解了“数据库SQL语句的使用”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“数据库SQL语句的使用”吧!
康乐ssl适用于网站、小程序/APP、API接口等需要进行数据传输应用场景,ssl证书未来市场广阔!成为创新互联建站的ssl证书销售渠道,可以享受市场价格4-6折优惠!如果有意向欢迎电话联系或者加微信:18980820575(备注:SSL证书合作)期待与您的合作!1、创建数据库 create database if not exists cs2013; 2、创建数据库表格 create table if not exists comp ( id int not null primary key auto_increment , pid varchar(30) not null unique , cname varchar(30) not null , ename varchar(30) not null , grade varchar(30) not null , sex int not null , clothe varchar(15) not null )default charset = utf8; create table if not exists team ( id int not null primary key auto_increment , cname varchar(30) not null , ename varchar(30) not null , coach0 int not null , coach2 int not null , stu0 int not null , stu1 int not null , stu2 int not null , isgirls int not null , email varchar(30) not null , phone varchar(15) not null , foreign key (coach0) references comp(id) , foreign key (coach2) references comp(id) , foreign key (stu0) references comp(id) , foreign key (stu1) references comp(id) , foreign key (stu2) references comp(id) )default charset = utf8; create table if not exists college ( id int not null primary key auto_increment, cname varchar(30) not null , ename varchar(30) not null , teamcnt int not null )default charset = utf8; create table if not exists rc ( id int not null primary key auto_increment , college int not null , team int not null , date date not null , foreign key (college) references college (id) , foreign key (team) references team (id) )default charset = utf8; create table if not exists room ( id int not null primary key auto_increment, name varchar(30) not null , totcnt int not null , regcnt int not null , price double not null )default charset = utf8; create table if not exists hotel ( id int not null primary key auto_increment, name varchar(30) not null , room0 int not null , room1 int not null , room2 int not null , foreign key (room0) references room (id) , foreign key (room1) references room (id) , foreign key (room2) references room (id) )default charset = utf8; create table if not exists rh ( id int not null primary key auto_increment, college int not null , hotel int not null , date date not null , foreign key (college) references college (id) , foreign key (hotel) references hotel (id) )default charset = utf8;
感谢各位的阅读,以上就是“数据库SQL语句的使用”的内容了,经过本文的学习后,相信大家对数据库SQL语句的使用这一问题有了更深刻的体会,具体使用情况还需要大家实践验证。这里是创新互联网站建设公司,,小编将为大家推送更多相关知识点的文章,欢迎关注!