Oracle学习之路-SQL篇-预备数据

开始转向Oracle了，记录一下自己的学习历程

先创建一些表吧：

---------------//////创建学生表create table student(  sno varchar2(10) primary key,  sname varchar2(20),  sage number(2),  ssex varchar2(5));-------------/////////创建教师表create table teacher(tno varchar2(10) primary key,tname varchar2(20));------------ //////创建课程表create table course(cno varchar2(10),cname varchar2(20),tno varchar2(20),constraint pk_course primary key (cno,tno));----------------//////创建选课表create table sc(sno varchar2(10),cno varchar2(10),score number(4,2),constraint pk_sc primary key (sno,cno));------------------/////////////操作/*******初始化学生表的数据******/insert into student values ('s001','张三',23,'男');insert into student values ('s002','李四',23,'男');insert into student values ('s003','吴鹏',25,'男');insert into student values ('s004','琴沁',20,'女');insert into student values ('s005','王丽',20,'女');insert into student values ('s006','李波',21,'男');insert into student values ('s007','刘玉',21,'男');insert into student values ('s008','萧蓉',21,'女');insert into student values ('s009','陈萧晓',23,'女');insert into student values ('s010','陈美',22,'女');commit;/******************初始化教师表***********************/insert into teacher values ('t001', '刘阳');insert into teacher values ('t002', '谌燕');insert into teacher values ('t003', '胡明星');commit;/***************初始化课程表****************************/insert into course values ('c001','J2SE','t002');insert into course values ('c002','Java Web','t002');insert into course values ('c003','SSH','t001');insert into course values ('c004','Oracle','t001');insert into course values ('c005','SQL SERVER 2005','t003');insert into course values ('c006','C#','t003');insert into course values ('c007','JavaScript','t002');insert into course values ('c008','DIV+CSS','t001');insert into course values ('c009','PHP','t003');insert into course values ('c010','EJB3.0','t002');commit;/***************初始化成绩表***********************/insert into sc values ('s001','c001',78.9);insert into sc values ('s002','c001',80.9);insert into sc values ('s003','c001',81.9);insert into sc values ('s004','c001',60.9);insert into sc values ('s001','c002',82.9);insert into sc values ('s002','c002',72.9);insert into sc values ('s003','c002',81.9);insert into sc values ('s001','c003','59');commit;