Hi Martijn,
it should be easily possible to query all _from and all _to values. I am
just unsure how exactly you want them returned.
One example would be:
LET ids = APPEND(
FOR doc IN e RETURN doc._from,
FOR doc IN e RETURN doc._to
)
RETURN ids
This will return all _from and all _to values in a single array, with
duplicates.
To make the result array unique, all that is required is to add a call to
the UNIQUE function:
LET ids = UNIQUE(APPEND(
FOR doc IN e RETURN doc._from,
FOR doc IN e RETURN doc._to
))
RETURN ids
Hope this helps.
Best regards
Jan
Am Freitag, 16. März 2018 09:36:29 UTC+1 schrieb Martijn Geers:
>
> Hi guys,
>
> I'm trying to use the ArangoDB Web Interface to query my database. What
> I'd like to do is create a variable using the LET functionality, which
> contains a list of all _to and _from elements of an edge collection.
> It seems impossible to get them in a single neat list, rather I either do
> something along the lines of 'return {"_to": edge._to, "_from": edge._from}
> in which case they're still separated entities.
> Or I do return [edge._to, edge._from] in which case I just get a lot of 2
> element vectors, rather than a single list of several 10s or 100s of
> entries.
> How do I create equivalency for these elements? Hope you guys can help me
> out.
>
> Kind regards,
>
> Martijn
>
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