CS 649 Database Management Systems
Assignment #1 Solutions
1.
Get the names of all suppliers
select sname from s
2.
Get the names of parts whose weight is between 10 and 15
select pname,weight from p where weight between '10' and '15'
select pname from p where weight >'10' and weight<'15'
3.
Which supplier supplied what parts to the 'Sorter' job?
select s.sname,p.pname from s,p,j,spj where s.sno=spj.sno and p.pno=spj.pno
and j.jno=spj.jno and j.jname='Sorter'
4.
Which jobs require red parts?
select distinct j.jname from p,j,spj where j.jno=spj.jno and p.pno=spj.pno
and p.color='red'
5.
Get the names of the suppliers who supplied in 1998 and 1999
select sname from s where sno in ( select sno from spj where
year(shipDate)=1999 and sno in( select sno from spj where
year(shipDate)=1998))
6.
Get the names of the suppliers who never supplied anything in 1999
select sname from s where sno in (select distinct sno from spj where
year(shipDate)<>1999)
7.
Which supplier supplied the most parts ever?
select sname from s where sno in (select distinct sno from spj where
qty=(select max(qty) from spj))
8.
What is the total quantity of parts ordered for the 'Sorter' job?
select sum(qty) from spj where jno in(select jno from j where
jname='Sorter')
9.
What are the parts that 'Adam' ever supplied?
select distinct p.pname from s,p,spj where s.sno=spj.sno and p.pno=spj.pno
and s.sname='Adam'
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CS 649 Database Management Systems
10.
What is the most recently shipped job?
select jname from j where jno in (select jno from spj where
shipDate=(select max(shipDate) from spj))
11.
What is the total weight of a 'Terminal'?
select sum(p.weight*spj.qty) from p,spj,j where j.jno=spj.jno and
p.pno=spj.pno and j.jname='Terminal'
12.
Which supplier has the lowest status?
select sname from s where status = (select min(status) from s)
13.
What is the total weight of all the parts?
select sum(weight) from p
14.
Which of the jobs had all the parts from the same city?
select distinct j.jname from j,p,spj where j.jno=spj.jno and p.pno=spj.pno
and j.city=p.city
15.
Get the names of the parts required to finish the 'Tape' job
select distinct p.pname from j,p,spj where j.jno=spj.jno and p.pno=spj.pno
and j.jname='Tape'
16.
Which city had the maximum number of parts originating from it?
select name from (select sum(spj.qty) as y,p.city as name from p,spj where
p.pno=spj.pno group by p.city) where y=(select max(x) from (select
sum(spj.qty) as x,p.city from p,spj where p.pno=spj.pno group by p.city))
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