利用SQL語句查詢（基於MSSQL）

（1）求**工程j1零件的**商號碼sno

（2）求**工程j1零件p1的**商號碼sno

（3）找出所有**商的姓名和所在城市

（4）找出所有零件的名稱、顏色和重量

（5）找出使用**商s1所**零件的工程號碼

create database spj 

on primary
(name=spj_data,
filename='e:\data2\spj_data.mdf',
size=10mb,
filegrowth=10%,
maxsize=unlimited
)log on
(name=spj_log,
filename='e:\data2\spj_log.ldf',
maxsize=10mb,
filegrowth=1mb
)use spj;
create table s(
sno char(3) primary key,
sname char(10),
status char(2),
city char(10));
create table p(
pno char(3),
pname char(10),
color char(4),
weight int,
primary key(pno));
create table j(
jno char(3),
jname char(10),
city char(10),
primary key(jno));
create table spj(
sno char(3),
pno char(3),
jno char(3),
qty int,
primary key(sno,pno,jno),
foreign key(sno) references s(sno),
foreign key(pno) references p(pno),
foreign key(jno) references j(jno)
);insert into s(sno,sname,status,city) values
('s1','精益','20','天津'),
('s2','盛錫','10','北京'),
('s3','東方紅','30','北京'),
('s4','豐泰盛','20','天津'),
('s5','為民','30','上海');
insert into p(pno,pname,color,weight) values
('p1','螺母','紅',12),
('p2','螺栓','綠',17),
('p3','螺絲刀','藍',14),
('p4','螺絲刀','紅',14),
('p5','凸輪','藍',40),
('p6','齒輪','紅',30);
insert into j values
('j1','三建','北京'),
('j2','一汽','長春'),
('j3','彈簧廠','天津'),
('j4','造船廠','天津'),
('j5','機車廠','唐山'),
('j6','無限電廠','常州'),
('j7','半導體廠','南京');
insert into spj values
('s1','p1','j1',200),
('s1','p1','j4',700),
('s1','p2','j2',100),
('s2','p3','j1',400),
('s2','p3','j2',200),
('s2','p3','j4',500),
('s2','p3','j5',400),
('s2','p5','j1',400),
('s3','p1','j1',200),
('s3','p3','j1',200),
('s4','p5','j1',100),
('s4','p6','j3',300),
('s4','p6','j4',200),
('s5','p2','j4',100),
('s5','p3','j1',200),
('s5','p6','j2',200),
('s5','p6','j4',50);

select distinct sno from spj where jno='j1';

select distinct sno from spj where jno='j1' and pno='p1';

select sname,city from s ;

select pname,color,weight from p;

select distinct pno from spj where sno='s1';

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