条件表达式中的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;

我现在想在两个表中添加一个模块，计算出价格：

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

因此，最终代码如下所示：

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;

但是，我得到一个错误：

“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中的一半填充条目。 删除此项可以解决问题。 再次感谢安德烈！