title: How to find documents with exactly the same array entries as in a query
body: <p>I have documents in a collection, looking like this:</p>
  
  <pre><code>[
    {
      userId: 1,
      itemsIds: [399957190, 366369952],
      hash: '85e765840b1cd3c413404cdf6b8fb2a4'
    },
    {
      userId: 2,
      itemsIds: [349551151, 366369952],
      hash: 'a28fa334515749b1b13fcd2183edb8de'
    },
    {
      userId: 3,
      itemsIds: [399957190, 366369952],
      hash: '85e765840b1cd3c413404cdf6b8fb2a4'
    }
  
  ]
  </code></pre>
  
  <p>These are users, which have favorite items in their lists. I want one user's list to others and find if they are equal. If they are, I want to mark them as a kind of a pair in my code and perform some actions. </p>
  
  <p>In the example above users 1 and 3 have the same favorites lists.
  How do I find users with an array which contains exactly the values I list?</p>