为什么我在运行 MS Access 查询时收到“输入参数值"? [英] Why am I getting “Enter Parameter Value” when running my MS Access query?

问题描述

SELECT ID, 
       Name, 
       (SELECT CityName 
        FROM City 
        WHERE Employee.CityID = City.CityID) AS [City Name] 
FROM Employee 
WHERE [City Name] = "New York"

我要选择所有来纽约的员工，但每当我运行查询时，我总是会得到一个输入参数值"框.我该如何解决这个问题?

I'm about selecting all employees who come New York but whenever I run the query, I always get a "Enter Parameter Value" box. How can I fix this?

推荐答案

这是因为 Access 不允许您在查询中使用字段别名 - 它无法将 [City Name] 识别为有效的字段名称.别名仅用作结果集中的字段名称.相反，您需要使用整个表达式.

This is because Access does not allow you to use field aliases in the query - it does not recognize [City Name] as a valid field name. Aliases are only used as field names in the result set. Rather, you need to use the entire expression.

因此，此查询在 Access 中可能更容易定义为:

As such, this query would probably be more easily defined in Access as:

SELECT ID, 
       Name, 
       CityName AS [City Name]
FROM Employee INNER JOIN City
    ON Employee.CityID=City.CityID
WHERE CityName = "New York"

此外，名称"是保留字 - 不建议将其用作字段名称.

Also, 'Name' is a reserved word - using it as a field name is not suggested.

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