SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Subquery (alias subquery) (children 1)
     SelectWithUnionQuery (children 1)
      ExpressionList (children 2)
       SelectQuery (children 1)
        ExpressionList (children 1)
         Literal UInt64_5
       SelectQuery (children 1)
        ExpressionList (children 1)
         Literal UInt64_5
    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 subquery
              Literal Array_[UInt64_1]
            Literal UInt64_1
      Literal Array_[UInt64_1, UInt64_2, UInt64_3]