Question

我的问题：我有一个查询过滤数据，具体取决于输入到表单中的复选框，文本框和组合框中的内容。除了一个单独的组合框外，所有这些都完美无缺。如果我在这个名为'cmbBodyType'的组合框中输入数据，无论我输入什么数据，每次都会返回0结果。

到目前为止我的代码非常冗长，所以我将它全部粘贴到下面，然后我将粘贴我用于过滤组合框的片段。

    SELECT [Car Table].Car_VIN, [Car Table].Car_Class, [Car Table].Car_BodyType,
[Car Table].Car_Colour, [Car Table].Car_Make, [Car Table].Car_Model, [Car
Table].Car_EngineType, [Car Table].Car_TransmissionType, [Car
Table].Car_GPSAvailability, [Car Table].Car_BootSpace, [Car
Table].Car_FuelConsumptRate, [Car Table].Car_SeatNumber, [Car
Table].Car_GreenStarRating, [Car Table].Car_ANCAPSafetyRating, [Car
Table].Car_DriveType
FROM [Car Table]

       WHERE ((([Car Table].Car_VIN) Like "*" & [Forms]![Navigation Form]!
    [NavigationSubform].[Form]![txtVIN] & "*") AND (([Car Table].Car_Class) Like "*"
    & [Forms]![Navigation Form]![NavigationSubform].[Form]![cmbClass] & "*") AND
    (([Car Table].Car_DriveType) Like "*" & [Forms]![Navigation Form]!
    [NavigationSubform].[Form]![cmbDriveType] & "*") AND (([Car Table].Car_BodyType)
    Like "*" & [Forms]![Navigation Form]![NavigationSubform].[Form]![cmbBodyType] &
    "*") AND (([Car Table].Car_Colour) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![cmbBodyType] & "*") AND (([Car Table].Car_Make)
    Like "*" & [Forms]![Navigation Form]![NavigationSubform].[Form]![txtMake] & "*")
    AND (([Car Table].Car_Model) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![txtModel] & "*") AND (([Car Table].Car_EngineType)
    Like "*" & [Forms]![Navigation Form]![NavigationSubform].[Form]![cmbEngineType]
    & "*") AND (([Car Table].Car_TransmissionType) Like "*" & [Forms]![Navigation
    Form]![NavigationSubform].[Form]![cmbTransmissionType] & "*") AND (([Car
    Table].Car_GPSAvailability) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![ChGPSAvailability] & "*") AND (([Car
     Table].Car_SeatNumber) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![txtSeatNumber] & "*") AND (([Car
     Table].Car_GreenStarRating) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![cmbGreenStarRating] & "*") AND (([Car
     Table].Car_ANCAPSafetyRating) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![cmbANCAPSafetyRating] & "*") AND
     ((Abs([car_fuelconsumptrate]-Nz([Forms]![Navigation Form]![NavigationSubform]
    .[Form]![txtFuelConsumption],[car_fuelconsumptrate]))<=Nz([2],9999)))
AND ((Abs([car_bootspace]-Nz([Forms]![Navigation Form]![NavigationSubform].[Form]
![txtBootSpace], [car_BootSpace]))<=Nz([100],9999))));

片段（这将在WHERE中，或者更简单地说，这是设计视图中显示的标准）：

Like "*" & [Forms]![Navigation Form]![NavigationSubform].[Form]![cmbBodyType] & "*"

编辑：似乎我的'绿色星级评级'组合框在搜索中没有任何差别，无论其价值如何。似乎工作和非工作组合框之间的所有内容都是相同的...我注意到的一件事是，两个不起作用的组合框都有比其他工作组合框更多的选择。

Answer 1

您可以在WHERE语句中使用类似

的部分

   ...AND [Car Table].Car_BodyType Like 
               IIf(IsNull([Forms]![Navigation Form]![NavigationSubform].[Form]![cmbBodyType]),"*" ,
               [Forms]![Navigation Form]![NavigationSubform].[Form]![cmbBodyType])...

在MS Access Search Form need to pass values from unbound combo box to query找到阅读它以获得进一步的解释，以及评论。

BTW：

(([Car Table].Car_Colour) Like "*" & [Forms]![Navigation Form]
    ![NavigationSubform].[Form]![cmbBodyType] & "*")

您从cmbBodyType

中搜索Car_color

小心这个巨大的SQL

编辑：星级评分系统：这个领域是什么类型的？如果是数字字段，则LIKE不适用。 LIKE意为文本afaik。

MS Access：筛选查询组合框错误

1 个答案: