title: Why can't i filter a Deep nested query in graphql?
body: <p>So i just started using graphql recently (last week to be precise). I get the concept of being able to filter queries with the 'where' argument and all but i noticed when i try to get objects from a deep nested query it becomes somewhat impossible. So say i have 'domestic_worker_nextofkin' query that should get fullname, mobile_phone1, and relationship where 'archived' _is_null equals true as given below:</p>
  
  <pre><code>domestic_workers_nextofkin(where: {archived:{_is_null: true}}){
      full_name
      mobile_phone1
      domestic_workers_relationships{
        relationship
      }
    }
  }
  </code></pre>
  
  <p>The query above does it's intended job and gets the full_name, mobile_phone1 and relationship.</p>
  
  <p>But my current problem is that when this query is deeply nested as shown below (the asterisked code):</p>
  
  <pre><code>query User($userId: Int) {
       domestic_workers_news{
            title
            date_created
            summary
            url
          }
      users_user(where: {id: {_eq: $userId}}) {
        domestic_workers_pictures(order_by: {id: desc}, limit: 1) {
          id
        }
        id
        password
        username
        first_name
        last_name
        email
        gender
        birth_date
        mobile_phone1
        mobile_phone2
        home_address_street
        home_address_town
        home_address_lga
        home_address_state
        home_address_country
        home_address_postal_code
        job_title
        workplace
        verified
        agreed_terms
        date_joined
        last_modified
        domestic_workers_workers {
          domestic_workers_pictures(order_by: {id: desc}, limit: 1) {
            id
          }
          id
          first_name
          last_name
          other_name
          email
          mobile_phone1
          mobile_phone2
          home_town
          home_state
          service
          birth_date
          gender
          date_created
          current_employer_id
          domestic_workers_relationships{
            id
            payment
            payment_currency
            start_date
            relationship
            domestic_workers_agent {
              full_name
              mobile_phone1
              domestic_workers_relationships{
                relationship
              }
              domestic_workers_pictures(order_by: {id: desc}, limit: 1) {
                id
              }
            }
  
  
  **domestic_workers_nextofkin (where: {archived:{_is_null: true}}) {
          full_name
          mobile_phone1
           domestic_workers_relationships{
            relationship
          }
        }
      }**
          domestic_workers_reviews {
            id
            score
            summary
            date_created
            users_user {
              first_name
              last_name
              domestic_workers_pictures(order_by: {id: desc}, limit: 1) {
                id
              }
            }
          }
          employerRelationships: domestic_workers_relationships(order_by: {id: desc}, limit: 1, where: {relationship: {_eq: "Employer"}}) {
           end_date
           relationship
          }
        }
      }
     }
  </code></pre>
  
  <p>It shows the 'where' argument highlighted as red, which possibly means that the 'where' argument shouldnt be placed there which seems rather confusing to me. Can anyone explain why this happens and show me a workaround to pull off the task i'm trying to perform? Thanks.</p>