asterix-app/src/test/resources/demo_aql/rainbow/110-self-join-dblp.aql

use dataverse demo_aql;

declare type DBLPType as open {
 id: int32,
 dblpid: string,
 title: string,
 authors: string,
 misc: string
}

declare nodegroup group1 on rainbow-01, rainbow-02, rainbow-03, rainbow-04, rainbow-05;

declare dataset DBLP(DBLPType) 
  primary key id on group1;

write output to rainbow-01:"/home/onose/hyracks-rainbow/results/110-self-join-dblp.adm";

set simthreshold '.8f';

for $k in (
  for $i in dataset('DBLP')
  for $j in dataset('DBLP')
  where $i.title ~= $j.title
  order by $i.id, $j.id
  return {'dblp1': $i, 'dblp2': $j}
) 
where $k.dblp1.id < $k.dblp2.id
return $k