with as的用法實例

with res as (select top(20) DiDealerInventory.DealerCode dcode,CarSeries,Vin,MdmDealer.SystemCode sysd
from DiDealerInventory
LEFT JOIN MdmDealer ON MdmDealer.DealerCode=DiDealerInventory.DealerCode
where CarSeries='SUV-CN210S'),
 res2 as (select DealerCode dcode
 from MdmDealer,res where SystemCode=res.sysd)

 select res.CarSeries,res.Vin,res.sysd,res.dcode,
 VehDealerWareHouse.Name,VehDealerWareHouse.Location,VehDealerWareHouse.WareHousePoint
 from VehDealerWareHouse,res2,res where VehDealerWareHouse.DealerCode=res2.dcode