更新查询中使用联接

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 

，但仍是错误diplays状物体找不到名称，即使该表中找到

Answer 1

如果这是你整个查询，你为什么链接到tb_Project？看起来这只是在ProjectID上过滤，但是这个列在Project_Phases中，所以你不能用FORNER JOIN，只是使用：

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