创建学生表Student:
##一般如果用到中文或者其它特殊字符,就会使用n开头的类型,否则的话直接使用var开头的。
create table Student(S varchar(10),Sname nvarchar(10),Sage datetime,Ssex nvarchar(10));
直接右键:Refresh All 或者 查询建表是否成功:
select * from lianxi.student;.
插入数据:
insert into Student values('01' , N'赵雷' , '1990-01-01' , N'男');
insert into Student values('02' , N'钱电' , '1990-12-21' , N'男');
insert into Student values('03' , N'孙风' , '1990-05-20' , N'男');
insert into Student values('04' , N'李云' , '1990-08-06' , N'男');
insert into Student values('05' , N'周梅' , '1991-12-01' , N'女');
insert into Student values('06' , N'吴兰' , '1992-03-01' , N'女');
insert into Student values('07' , N'郑竹' , '1989-07-01' , N'女');
insert into Student values('08' , N'王菊' , '1990-01-20' , N'女');
创建学生表Course及插入数据:
create table Course(C varchar(10),Cname nvarchar(10),T varchar(10))
insert into Course values('01' , N'语文' , '02');
insert into Course values('02' , N'数学' , '01');
insert into Course values('03' , N'英语' , '03');
创建教师表Teacher:
create table Teacher(T varchar(10),Tname nvarchar(10));
insert into Teacher values('01' , N'张三')
insert into Teacher values('02' , N'李四')
insert into Teacher values('03' , N'王五')
select * from lianxi.Teacher;(查询)
创建成绩表SC:
#decimal(18,1),18位数字保留一位小数
create table SC(S varchar(10),C varchar(10),score decimal(18,1));
insert into SC values('01' , '01' , 80)
insert into SC values('01' , '02' , 90)
insert into SC values('01' , '03' , 99)
insert into SC values('02' , '01' , 70)
insert into SC values('02' , '02' , 60)
insert into SC values('02' , '03' , 80)
insert into SC values('03' , '01' , 80)
insert into SC values('03' , '02' , 80)
insert into SC values('03' , '03' , 80)
insert into SC values('04' , '01' , 50)
insert into SC values('04' , '02' , 30)
insert into SC values('04' , '03' , 20)
insert into SC values('05' , '01' , 76)
insert into SC values('05' , '02' , 87)
insert into SC values('06' , '01' , 31)
insert into SC values('06' , '03' , 34)
insert into SC values('07' , '02' , 89)
insert into SC values('07' , '03' , 98)