SqlSever基础 where inner join 内联表，两个表按照指定条件合作显示内容

 1 --创建一个数据库
 2 create database helloworld1
 3 
 4 
 5 --用helloworld1这个数据库
 6 use helloworld1
 7 
 8 --创建一个表格teacher
 9 create table Teacher
10 (
11    Id int primary key identity(1,1),   
12    Name nvarchar(10),
13    Class nchar(2)
14 )
15 
16 create table Location
17 (
18    Class nchar(2),
19    location nvarchar(5)
20 )
21 
22 --看看 teacher这个表格有啥
23 select * from Teacher
24 select * from Location
25 
26 --向这个Teacher中插入这几行内容
27 insert into Teacher
28        values(‘女娲娘娘‘,‘道家‘),
29              (‘元始天尊‘,‘道家‘),
30              (‘释迦摩尼佛‘,‘佛家‘),
31              (‘耶稣‘,‘基督‘),
32              (‘绿度母‘,‘佛家‘),
33              (‘九天应元雷声普化天尊‘,‘道家‘),
34              (‘无盐娘娘‘,‘道家‘),
35              (‘王母娘娘‘,‘道家‘)
36 
37 --向这个Location中插入这几行内容
38 insert into Location
39         values(‘佛家‘,‘印度‘),
40               (‘道家‘,‘中国‘),
41               (‘基督‘,‘西方‘),
42               (‘儒家‘,‘中国‘)
43 
44 -- inner join 内联， 把teacher表与location表连起来
45 -- Teacher为主表，location为附属表，配合teacher
46 
47 --只显示匹配的内容，不匹配的不出现。比如，儒家就没有出现
48 select * from
49 Teacher inner join Location on Teacher.Class=Location.Class

1 select * from
2 Location inner join Teacher  on Teacher.Class=Location.Class