SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Literal UInt64_10 (alias nelems)
    Function arrayResize (children 1)
     ExpressionList (children 2)
      Function arrayPartialSort (children 1)
       ExpressionList (children 2)
        Identifier nelems
        Literal Array_[UInt64_1, Float64_nan, UInt64_2, NULL, UInt64_3, Float64_nan, Int64_-4, NULL, Float64_inf, Float64_-inf]
      Identifier nelems
