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
                    Function array (children 1)
                     ExpressionList
                    Literal Array_[UInt64_1, UInt64_2, UInt64_1, UInt64_4]
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Function array (alias a) (children 1)
                   ExpressionList (children 3)
                    Function array (children 1)
                     ExpressionList
                    Function array (children 1)
                     ExpressionList
                    Literal Array_[UInt64_3, UInt64_4, UInt64_5, UInt64_4]
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier a