select distinct b.MaterialID,a.id,a.InNo,a.Title,a.FromType,a.FromBillID,d.orderNo ,a.Executor,h.EmployeeName as ExecutorName,a.Processor,e.EmployeeName as ProcessorName ,a.EnterDate,a.projectID,a.totalProduct ,case a.billStatus when '0' then '制單' when '1' then '執行' when '2' then'結單' end as b illStatus ,a.DepId,f.CustName,b.ID as detailID,b.ProductNo,b.ProductName,b.Specification,b.size ,b.unit,b.StorageID,c.StorageName,b.StorageDID,sd.ProductCount,c.StorageDName ,b.ProductCount,b.procedureNO,b.arts,b.RunCard,b.RuncardStatus from officedba.OutSourceInfo a left join officedba.OutSourceDetail b on a.InNo=b.InNo left join officedba.StorageDetailInfo c on c.ID=b.StorageDID and c.StorageNo=b.StorageID left join officedba.PurchaseOrder d on a.FromBillID=d.OrderNO left join officedba.EmployeeInfo e on e.ID=a.Processor left join officedba.ProviderInfo f on f.ID=a.DepId left join officedba.EmployeeInfo h on h.ID=a.Executor left join officedba.ProductInfo i on b.ProductNo=i.ProdNo left join MaterialDetailInfo j on j.MD03=i.ID left join officedba.CodeUnitType cu on cu.ID=b.Unit left join officedba.TechnicsArchives ta on ta.TechNo=b.arts left join officedba.RunCardDetail sd on sd.runcard=b.runcard and sd.ProcedureID=b.procedureNO where a.InNo='CKDBH2017040060'
之前寫過一個關聯查詢和子查詢效率對比的博客，流露出自己對關聯查詢的青睞，如果邏輯足夠清晰，關聯查詢是一個不錯的選擇。（上面是自己剛寫的一個關聯查詢的sql語句，拿出來曬曬，總覺得有一兩米長）