Re: How to find persons who like red fruits or crunchy veggies?

kvnkrkptrck_at_gmail.com wrote:
> In your language, can you query:
> How many fruit colors are there? Which fruit color(s) is/are the most
> liked? How many veggies are there that nobody likes?

How about relational division type of queries?

i) find all job applicants who have all the skills (or find pilots that can fly all the airplans)

ii)
table sets (

    set# integer,
    element integer
)

e.g. {{1,2,3},{3,4}}
set# element
---- ---------
1 1
1 2
1 3
2 3
2 4

find the intersection of the sets (i.e. all the elements that belong to all the sets). Received on Thu Nov 16 2006 - 01:27:03 CET