asterixdb/asterix-benchmarks/src/main/resources/tpc-h/queries/q13_customer_distribution.3.query.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 tpch;
set import-private-functions 'true';

for $gco in (
  for $co in (
    for $c in dataset('Customer')
    return {
      "c_custkey": $c.c_custkey, 
      "o_orderkey_count": count(
        for $o in dataset('Orders')
        where  $c.c_custkey = $o.o_custkey and not(like($o.o_comment,'%special%requests%'))
        return $o.o_orderkey
      )
    }
  )
  group by $c_custkey := $co.c_custkey with $co
  return {
    "c_custkey": $c_custkey,
    "c_count": sum(for $i in $co return $i.o_orderkey_count)
  }
)
group by $c_count := $gco.c_count with $gco
let $custdist := count($gco)
order by $custdist desc, $c_count desc
return {
  "c_count": $c_count,
  "custdist": $custdist
}