CREATE OR REPLACE VIEW V_AICO AS
SELECT id
      ,adit_code
      ,selling_price
      ,cost_price
      ,delivery_cost
      ,regi_code
      ,enty_code
      ,mety_code
      ,mesc_code
      ,valid_from AS effective_from
      ,least(nvl(valid_to
                ,TO_DATE('2099'
                        ,'yyyy'))
            ,nvl(next_valid_from
                ,TO_DATE('2099'
                        ,'yyyy'))) AS effective_to
FROM   (SELECT id
              ,adit_code
              ,selling_price
              ,cost_price
              ,delivery_cost
              ,regi_code
              ,enty_code
              ,mety_code
              ,mesc_code
              ,valid_from
              ,valid_to
              ,lead(valid_from) over(PARTITION BY adit_code, regi_code, enty_code, mety_code, mesc_code ORDER BY valid_from) AS next_valid_from
        FROM   costs cost
        WHERE  cost_type = 'AICO');