摘要： 1, 连接了八个数据库表，而且全部使用LEFT JOIN，如下所示：Resource_Resources ALEFT JOIN Resource_Clients B ON A.ResourceId = B.ResourceIdLEFT JOIN Resource_Files C on B.ClientId=C.ClientIdLEFT JOIN Resource_ClientsModels D ON B.ClientId = D.ClientIdLEFT JOIN Mobile_Models E ON D.ModelId = E.ModelIdLEFT JOIN dbo.Resource_Im 阅读全文