asterixdb/asterix-app/src/test/resources/optimizerts/queries_sqlpp/inverted-index-join/ngram-jaccard-check_03.sqlpp

/*
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
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 * KIND, either express or implied.  See the License for the
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/*
 * Description    : Fuzzy self joins a dataset, DBLP, based on the similarity-jaccard-check function of its titles' 3-gram tokens.
 *                  DBLP has a 3-gram index on title, and we expect the join to be transformed into an indexed nested-loop join.
 * Success        : Yes
 */

drop  dataverse test if exists;
create  dataverse test;

use test;


set `import-private-functions` `true`;

create type test.DBLPType as
 closed {
  id : int32,
  dblpid : string,
  title : string,
  authors : string,
  misc : string
}

create  dataset DBLP(DBLPType) primary key id;

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

write output to asterix_nc1:"rttest/inverted-index-join_ngram-jaccard-check_03.adm"
select element {'arec':a,'brec':b}
from  DBLP as a,
      DBLP as b
where (test.`similarity-jaccard-check`(test.`gram-tokens`(a.title,3,false),test.`gram-tokens`(b.title,3,false),0.500000f)[0] and (a.id < b.id))
;