I think this is a dummy question, but wondering whether this is possible in
core.logic?
Lets say I have a set of relations
(db-rel foo p)
(db-rel bar p)
(db-rel fooz p p2)
and facts
[foo 1]
[bar 2]
[fooz 2 1]
[bar 3]
[fooz 3 1]
See that the fooz relation is potentially describing bar as children of
foo's. (like a foreign key)
and I want to unify with all the `bar`s for a given `foo` like so:
(run* [?q]
(fresh [?foo ?bars]
(bars-for-foo ?foo ?bars)
(l/== {:foo ?foo
:bars ?bars}
?q)))
=>
({:foo 1, :bar (2 3)})
Is it possible to define bars-for-foo?
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