Ok I think I figured it out. *distinct*() requires a *field name* for which
it searches within a collection of records. I think in the example above
above I have tried to pass a set to *distinct*. I guess I should have
believed the documentation. This works:
select distinct(car) from (
select expand(out('Owns')) from Person where name = 'Dave'
)
This seems to work too, but not sure yet why:
select out('Owns')[car] from Person where name = 'Dave'
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