As reported on https://community.lsst.org/t/qserv-using-neighbour-tables-to-perform-joins/3498.
select blah from dbs.source as s, dbd.detection as d, dbm.neighbour as n
where s.sourceID=n.sourceID and d.detectionID=n.detectionIDI getERROR 4110
(Proxy): Query processing error: QI=?: Failed to instantiate
query: AnalysisError:Query involves partitioned table joins that Qserv does
not know how to evaluate using only partition-local data
Develop a plan for cross-matching and/or cross-identification between LSST and external catalogs