>> tracker-sparql -q "SELECT ?photo WHERE{?photo a nmm:Photo} ORDER BY
>> ASC(?photo) OFFSET 1000 LIMIT 100"
>> ...
>> tracker-sparql -q "SELECT ?photo WHERE{?photo a nmm:Photo} ORDER BY
>> ASC(?photo) OFFSET 2000 LIMIT 100"
> Those queries look pretty useless, you are getting a list of sorted
> uris of pictures (generated uris, not even the real location). You are
> sorting a list like "urn:uuid:1273628", "urn:uuid:98377273", ...
These should be:
SELECT nie:url(?photo) WHERE {?photo a nmm:Photo} ORDER BY ...
> your usage of offse and limit is fine though. We cannot help with the
> performance of such a "laboratory" query. could you try with a more
> realistic example?
He is probably trying to retrieve a very large number of urls in batches.
Happy hacking,
Debarshi
--
One reason that life is complex is that it has a real part and an
imaginary part.
-- Andrew Koenig
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