标准表达式中的MS-Access数据类型不匹配

Question

我在查询中创建了一个工作联盟。

SELECT tblGlass.Address, tblGlass.Quantity, tblGlass.Width, tblGlass.Height, 
tblGlass.Thickness, tblGlass.Finish
FROM tblGlass
WHERE tblGlass.Ordered=No;


UNION SELECT tblSeansGlass.Address, tblSeansGlass.Quantity, 
tblSeansGlass.Width, tblSeansGlass.Height, tblSeansGlass.Thickness, 
tblSeansGlass.Finish
FROM tblSeansGlass
WHERE tblSeansGlass.Ordered=No;

我现在想要在两个表中添加一个模块，这需要付出代价：

GlassPrice([Width],[Height],[Thickness],[Quantity],[Finish]) AS [Glass Price]

所以最终的代码如下：

SELECT tblGlass.Address, tblGlass.Quantity, tblGlass.Width, tblGlass.Height, 
tblGlass.Thickness, tblGlass.Finish, GlassPrice([Width],[Height],
[Thickness],[Quantity],[Finish]) AS [Glass Price]
FROM tblGlass
WHERE tblGlass.Ordered=No;


UNION SELECT tblSeansGlass.Address, tblSeansGlass.Quantity, 
tblSeansGlass.Width, tblSeansGlass.Height, tblSeansGlass.Thickness, 
tblSeansGlass.Finish, GlassPrice([Width],[Height],[Thickness],[Quantity],
[Finish]) AS [Glass Price]
FROM tblSeansGlass
WHERE tblSeansGlass.Ordered=No;

然而，我收到错误：

  

“条件表达式中的数据类型不匹配。”

Answer 1

感谢Andre的评论，我发现问题的根源是tblSeansGlass中的半填充条目。删除此条目解决了这个问题。再次感谢安德烈！