| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| /* |
| * Description : Fuzzy self joins a dataset, DBLP, based on the edit-distance function of its authors. |
| * DBLP has a 3-gram index on authors, and we expect the join to be transformed into an indexed nested-loop join. |
| * We test the inlining of variables that enable the select to be pushed into the join for subsequent optimization with an index. |
| * We expect the top-level equi join introduced because of surrogate optimization to be removed, since it is not necessary. |
| * Success : Yes |
| */ |
| |
| drop dataverse test if exists; |
| create dataverse test; |
| |
| use test; |
| |
| |
| create type test.DBLPTypetmp as |
| closed { |
| id : int32, |
| dblpid : string, |
| title : string, |
| authors : string, |
| misc : string |
| } |
| |
| create type test.DBLPType as |
| closed { |
| nested : DBLPTypetmp |
| } |
| |
| create dataset DBLP(DBLPType) primary key nested.id; |
| |
| create index ngram_index on DBLP (nested.authors) type ngram (3); |
| |
| write output to asterix_nc1:"rttest/inverted-index-join-noeqjoin_ngram-edit-distance-inline.adm" |
| select element {'aauthors':a.nested.authors,'bauthors':b.nested.authors,'ed':ed} |
| from DBLP as a, |
| DBLP as b |
| with ed as test.`edit-distance`(a.nested.authors,b.nested.authors) |
| where ((ed < 3) and (a.nested.id < b.nested.id)) |
| ; |