数据库开发基础-教案

Posted 2020-07-25 右掱写爱

 1 create database gongsi
 2 go
 3 use gongsi
 4 go
 5 create table bumen
 6 (
 7     bcode int primary key not null,
 8     bname varchar(20),
 9     bceo varchar(20),
10     btel varchar(20),
11 )
12 go
13 create table renyuan
14 (
15     code int primary key identity(10001,1) not null,
16     name varchar(20),
17     sex char(10),
18     age int,
19     cid varchar(20),
20     tel varchar(20),
21     bumen int 
22 )
23 go
24 
25 --插入数据  向部门表
26 insert into bumen values(1001,‘财务部‘,‘张三‘,‘1234567‘)
27 insert into bumen values(1002,‘企划部‘,‘李四‘,‘2345678‘)
28 insert into bumen values(1003,‘市场部‘,‘王五‘,‘3456789‘)
29 insert into bumen values(1004,‘客服部‘,‘赵六‘,‘4567890‘)
30 go
31 --插入人员表的信息
32 insert into renyuan values(‘张三‘,‘男‘,33,‘123456789012345678‘,‘1234567‘,1001)
33 insert into renyuan values(‘张全蛋‘,‘男‘,29,‘234567890123456789‘,‘7654321‘,1001)
34 insert into renyuan values(‘张‘,‘男‘,33,‘3456789012345677777‘,‘8765432‘,1001)
35 
36 insert into renyuan values(‘李四‘,‘女‘,45,‘789012345678903456‘,‘2345678‘,1002)
37 insert into renyuan values(‘李莲英‘,‘男‘,55,‘890789078907895622‘,‘6789056‘,1002)
38 insert into renyuan values(‘李洪‘,‘女‘,45,‘456789076543265443‘,‘8765434‘,1002)
39 
40 insert into renyuan values(‘王五‘,‘男‘,37,‘876542345798765434‘,‘6543234‘,1003)
41 insert into renyuan values(‘王二麻‘,‘女‘,32,‘23456876542345873‘,‘2376532‘,1003)
42 insert into renyuan values(‘王二丫‘,‘女‘,23,‘12345654322345654‘,‘6542346‘,1003)
43 insert into renyuan values(‘王查查‘,‘女‘,23,‘12345654322345654‘,‘6542346‘,1003)
44 insert into renyuan values(‘王甜‘,‘女‘,23,‘12345654322345654‘,‘6542346‘,1003)
45 
46 
47 insert into renyuan values(‘赵六‘,‘女‘,26,‘234765423456222‘,‘9874533‘,1004)
48 insert into renyuan values(‘赵敏‘,‘女‘,25,‘5434567765433456‘,‘7623456‘,1004)
49 insert into renyuan values(‘赵英俊‘,‘男‘,32,‘125432886543225‘,‘8565424‘,1004)
50 go
51 
52 select * from bumen 
53 select * from renyuan
54 --插入一条错误数据  显示一下外键是什么作用
55 insert into renyuan values(‘甲鱼‘,‘女‘,26,‘234765423456222‘,‘9874533‘,1008)
56 
57 --显示一下主键的作用
58 insert into bumen values(1001,‘销售部‘,‘钱八‘,‘2345652‘)
59 
60 
61 ---查询人数最多的部门里年龄最大的人的信息
62 select bumen from renyuan group by bumen having COUNT(*)>4
63 select MAX(age) from renyuan where bumen=1003
64 select code from renyuan where bumen=1003 and age =37
65 select * from renyuan where code=
66 (select code from renyuan where bumen=1003 and age =37
67 )
68 
69 
70 --按照年龄从小到大排序,取789号人员的所有信息
71 select top 3 * from renyuan where code not in
72 (select top 6 code from renyuan order by age) order by age
73 
74 --查找所有男同志里面年龄最大的人的信息
75 select*from renyuan where code=
76 (select top 1 code from renyuan  where age=
77 (select MAX(age) from renyuan  where sex=‘男‘))
78 
79 --分页查询
80 select top 5 * from renyuan
81 --6~10
82 select top 5 * from renyuan where code not in
83 (select top 5 code from renyuan)
84 --11-14
85 select top 5 * from renyuan where code not in
86 (select top 10 code from renyuan)
87 
88 --能分多少页
89 select ceiling(( select COUNT(*)from renyuan)/5.0)
90 
91 
92 --将人员表显示出来   并且将部门编号变为部门名称显示
93 select name , sex ,(select bname from bumen where bumen.bcode = renyuan.bumen) from renyuan