asterix-app/src/test/resources/demo_aql/rainbow/03-count-cust-age.aql

/*
 * 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.
 */
use dataverse demo_aql;

declare type CustomerType as open {
  cid: int32, 
  name: string,
  age: int32?,
  address: AddressType?,
  interests: {{string}},
  children: [ { name: string, age: int32? } ]
}

declare type AddressType as open {
  number: int32, 
  street: string,
  city: string
}

declare nodegroup group1 on rainbow-01, rainbow-02, rainbow-03, rainbow-04, rainbow-05;

declare dataset Customers(CustomerType) 
  primary key cid on group1;

write output to rainbow-01:"/home/onose/hyracks-rainbow/results/03-count-cust-age.adm";

count(
for $c in dataset('Customers')
where not(is-null($c.age)) 
return $c
)