Cant query in Hyperledger Composer

Question

I am trying to run this query:

query PapersFromAPoll
{
    description: "retrieve all the papers from a poll"
    statement:
         SELECT org.acme.democracity.Paper 
          WHERE(poll.pollId == _$id)
}

When I execute this query, i dont get any rows, here is the fragment where I make this query:

return query('PapersFromAPoll',{id : count.poll.pollId})

Paper and Poll in model.cto file:

asset Paper identified by paperId {
    o String paperId
    o String[] fields
    --> Poll poll  //Paper related with a poll
}

asset Poll identified by pollId {
    o String pollId
    o Ask[] asks
}

Answer 1

There's a mistake in your WHERE statement. Your query should be:

query PapersFromAPoll
{
  description: "retrieve all the papers from a poll"
  statement:
    SELECT org.acme.democracity.Paper 
      WHERE(poll == _$pollId)
}