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
)