asp.net - 使用连接更新查询

Question

UPDATE project_phases p2 
SET 
  p2.ClartiyID = @ClarityID,
  p2.Start_date = @start_date,
  p2.End_date = @End_date,
  p2.Planned_efforts = @Planned_efforts 
FROM 
  WSR.dbo.project_phases p2 
  INNER JOIN WSR.dbo.tb_Project p1 ON p1.ProjectID=p2.ProjectID 
WHERE 
  ProjectID = @ProjectID

但是即使找到该表，错误仍然显示，例如找不到对象名称

Answer 1

如果这是您的全部查询，为什么要链接到 tb_Project？似乎这只是为了过滤 ProjectID，但此列在 Project_Phases 中，所以你不能忘记 INNER JOIN 并只使用：

UPDATE project_phases 
SET 
  ClartiyID = @ClarityID,
  Start_date = @start_date,
  End_date = @End_date,
  Planned_efforts = @Planned_efforts 
WHERE 
  ProjectID = @ProjectID