SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier a
    Function arrayEnumerateUniqRanked (children 1)
     ExpressionList (children 1)
      Identifier a
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 2)
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Function array (alias a) (children 1)
                   ExpressionList (children 2)
                    Function array (children 1)
                     ExpressionList
                    Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_4]
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Literal Array_[Array_[UInt64_3, UInt64_4, UInt64_5]] (alias a)
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier a