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我通过访问 2007 创建了一个更新查询,我只是想将空行更新到表中的另一列。

                    UPDATE DISTINCTROW (ChangeList INNER JOIN (Current_INFO INNER JOIN Master_Database ON     
                    Current_INFO.[HEADER ID] = Master_Database.[HEADER ID]) AND (Current_INFO.[HG ID] = Master_Database.[HG ID])) ON 
                    ChangeList.[ZIP/POSTALCODE] = Master_Database.[ZIP/POSTALCODE]) INNER JOIN ChangeRequest ON 
                    Master_Database.[ZIP/POSTALCODE] = ChangeRequest.[ZIP/POSTALCODE] SET ChangeList.[CHANGE TA TO] = [Master_Database]![TA]
                    WHERE (((UCase([ACTION]))='UPDATE'));

在此处输入图像描述

然而这不起作用,它只返回空值但是如果我将此查询转换为一个简单的选择,我调用 [Master_Database]![TA] 它返回我需要的值。

谁能帮助我。谢谢!

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