blob: 21e41f84c44fc8d278225466913267de07265300 [file] [log] [blame]
/*
* Description : Tests whether an ngram_index is applied to optimize a selection query using the edit-distance-check function on strings.
* The index should *not* be applied (see below).
* 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 dataset DBLP(DBLPType) partitioned by key id;
load dataset DBLP
using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
create index ngram_index on DBLP(authors) type ngram(3);
write output to nc1:"rttest/inverted-index-basic_ngram-edit-distance-check-panic.adm";
// This query cannot be optimized with an index, based on the high edit distance.
for $o in dataset('DBLP')
let $ed := edit-distance-check($o.authors, "Amihay Motro", 5)
where $ed[0]
return $o