| /* |
| * 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. |
| */ |
| drop dataverse TinySocial if exists; |
| create dataverse TinySocial; |
| use dataverse TinySocial; |
| |
| |
| create type EmploymentType as open { |
| organization-name: string, |
| start-date: date, |
| end-date: date? |
| } |
| |
| create type FacebookUserType as closed { |
| id: int32, |
| alias: string, |
| name: string, |
| user-since: datetime, |
| friend-ids: {{ int32 }}, |
| employment: [EmploymentType] |
| } |
| |
| create dataset FacebookUsers(FacebookUserType) |
| primary key id; |
| |
| |
| let $lonelyusers := for $d in dataset FacebookUsers where count($d.friend-ids) < 2 return $d |
| let $lonelyusers2 := for $d in dataset FacebookUsers where count($d.friend-ids) < 2 return $d |
| for $l1 in $lonelyusers |
| for $l2 in $lonelyusers2 |
| where $l1.id < $l2.id |
| order by $l1.id, $l2.id |
| return { "user1": { "id": $l1.id, "name": $l1.name }, "user2": { "id": $l2.id, "name": $l2.name } }; |