asterix-app/src/test/resources/parserts/queries-sql-like/functionDecl1.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.
 */
declare function calculate($events){
from $event in $events
from $sponsor in $event.sponsoring_sigs
with $es := { "event": $event, "sponsor": $sponsor }
group by $sig_name := $sponsor.sig_name keeping $es
with $sig_sponsorship_count := count($es)
with $by_chapter :=
   from $e in $es
   group by $chapter_name := $e.sponsor.chapter_name keeping $es
   select { "chapter_name": $chapter_name, "escount" : count($es) }
order by $sig_sponsorship_count desc
limit 5
select { "sig_name": $sig_name, "total_count": $sig_sponsorship_count, "chapter_breakdown": $by_chapter }
}

with $result := calculate(dataset('Events'))
select $result