asterix-app/src/test/resources/optimizerts/queries/inverted-index-basic/ngram-contains-panic.aql

/*
 * Description    : Tests whether an ngram_index is applied to optimize a selection query using the contains function.
 *                  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;

create index ngram_index on DBLP(title) type ngram(3);

write output to nc1:"rttest/inverted-index-basic_ngram-contains-panic.adm";

// Cannot optimize this query because the string constant is shorter than the gram length.
for $o in dataset('DBLP')
where contains($o.title, "Mu")
order by $o.id
return $o