blob: d1e98248532a9ffd8a88b20c54d29965b289f61e [file] [log] [blame]
/*
* Description : Equi joins two datasets, DBLP and CSX, based on their title.
* DBLP has a secondary btree index on title, and given the 'indexnl' hint
* we expect the join to be transformed into an indexed nested-loop join.
* Success : Yes
*/
drop dataverse test if exists;
create dataverse test;
use dataverse test;
create type DBLPType as closed {
id: int32,
dblpid: string,
title: string,
authors: string,
misc: string
}
create type CSXType as closed {
id: int32,
csxid: string,
title: string,
authors: string,
misc: string
}
create dataset DBLP(DBLPType) partitioned by key id;
create dataset CSX(CSXType) partitioned by key id;
load dataset DBLP
using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
(("path"="nc1://data/pub-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":"));
load dataset CSX
using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
(("path"="nc1://data/pub-small/csx-small-id.txt"),("format"="delimited-text"),("delimiter"=":"));
create index title_index on DBLP(authors);
write output to nc1:"rttest/index-join_btree-secondary-equi-join.adm";
for $a in dataset('DBLP')
for $b in dataset('CSX')
where $a.authors /*+ indexnl */ = $b.authors
order by $a.id, $b.id
return {"aid": $a.id, "bid": $b.id, "authors": $a.authors}