SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayEnumerateUniqRanked (children 1)
     ExpressionList (children 2)
      Literal UInt64_2
      Literal Array_[Array_[UInt64_1], Array_[UInt64_1]]