SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function cityHash64 (children 1)
     ExpressionList (children 1)
      Function toString (children 1)
       ExpressionList (children 1)
        Function groupArray (children 1)
         ExpressionList (children 1)
          Function tuple (children 1)
           ExpressionList (children 1)
            Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias t) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 4)
          ExpressionList (children 3)
           Identifier brand_id
           Identifier rack_id
           Identifier quantity
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (alias t0) (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 4)
                  Identifier brand_id
                  Identifier rack_id
                  Identifier quantity
                  Function row_number (alias rn) (children 1)
                   ExpressionList
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    TableIdentifier stack
          Function lessOrEquals (children 1)
           ExpressionList (children 2)
            Identifier rn
            Literal UInt64_2
          ExpressionList (children 3)
           OrderByElement (children 1)
            Identifier brand_id
           OrderByElement (children 1)
            Identifier rack_id
           OrderByElement (children 1)
            Identifier quantity