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 3)
                    Function array (children 1)
                     ExpressionList
                    Literal Array_[UInt64_1]
                    Function array (children 1)
                     ExpressionList
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Literal Array_[Array_[UInt64_1]] (alias a)
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier a