Reg:atleast one queries

Question

Hi,
I'm confused in writing the at least one queries.
For ex:
Find the book purchased by atleast one student having book no:1543...
I need to write the above query using BOOKS AND STUDENTS table..
Could you suggest me for writing this type of queries {atmost etc..}
Thank you,
josh
Edited by: josh1612 on Oct 20, 2008 11:00 PM
Edited by: josh1612 on Oct 20, 2008 11:12 PM

Answer 1

I think i need to give the structure of the table also:
Table name      Attributes
instructor              Id, name, university
Shirts              Size, color, gender
students              Id, name, university Query:
(1)     Find the color purchased by atleast one student whose university is same as instructors university and the size of the shirt is 22
note:
If the above attributes or tables are not sufficient fot the above reqmt then please let me know what need to be added
please Check whether the following is up to the reqmt:
select s.color
from shirts s,students s1,instructor i
where s.size=22 and
s1.university=s.university;