SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayMap (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier x
          Function arrayElement (children 1)
           ExpressionList (children 2)
            Function arrayMap (children 1)
             ExpressionList (children 2)
              Function lambda (children 1)
               ExpressionList (children 2)
                Function tuple (children 1)
                 ExpressionList (children 1)
                  Identifier x
                Identifier x
              Literal Array_[UInt64_1]
            Literal UInt64_1
      Literal Array_[UInt64_1, UInt64_2, UInt64_3]