| /* |
| * 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 : Tests whether an ngram_index is applied to optimize a join query using the contains function. |
| * The index should be applied. |
| * Success : Yes |
| */ |
| |
| drop database test if exists; |
| create database test; |
| |
| use test; |
| |
| |
| create type test.DBLPType as |
| { |
| id : int32, |
| dblpid : string, |
| misc : string |
| } |
| |
| create type test.CSXType as |
| { |
| id : int32, |
| csxid : string, |
| authors : string, |
| misc : string |
| } |
| |
| create table DBLP(DBLPType) primary key id; |
| |
| create table CSX(CSXType) primary key id; |
| |
| create index ngram_index_DBLP on DBLP (title:string) type ngram (3) enforced; |
| |
| create index ngram_index_CSX on CSX (title:string) type ngram (3) enforced; |
| |
| write output to asterix_nc1:"rttest/inverted-index-join_ngram-contains-04.adm" |
| select element {'title1':o1.title,'title2':o2.title} |
| from DBLP as o1, |
| CSX as o2 |
| where (test.contains(o1.title,o2.title) and (o1.id < o2.id)) |
| order by o1.id,o2.id |
| ; |