SQL WHERE BETWEEN不select所有数据
我已经在范围内工作的应用程序中编写了导出（Access to Excel）function。
用户有4个RadioButtons ：AF，GM，NR和SZ。
假设用户select了rbtnAF ，它会将所有客户加载到Customer_Code字段以A，B，C，D，E或F开始的网格中。
加载数据的代码如下所示：
Dim strFields As String = "[Customer_Addresses].[Cust_Code], [Customers].[Customer_Name], [Customer_Addresses].[Contact_Code], [Customer_Addresses].[Contact_Name], " & _ "[Customer_Addresses].[Contact_Type], [Customer_Addresses].[Add1], [Customer_Addresses].[Add2], [Customer_Addresses].[Add3], [Customer_Addresses].[Add4], " & _ "[Customer_Addresses].[Add5], [Customer_Addresses].[Postcode], [Customer_Addresses].[Country], [Customer_Addresses].[Telephone], [Customer_Addresses].[Fax], " & _ "[Customer_Addresses].[Email], [Customer_Addresses].[Mobile_Phone], [Customers].[Customer_Category], [Customers].[Average_Payment_Terms], " & _ "[Customers].[Notes], [Customers].[salesRep], [Customers].[hoEmail], [Customers].[webpage] FROM Customers " & _ "INNER JOIN Customer_Addresses ON [Customers].[Customer_Code] =[Customer_Addresses].[Cust_Code]" If rbtnAF.Checked = True Then sql = "SELECT " & strFields & " WHERE [Customer_Addresses].[Cust_Code] BETWEEN " & _ "'A*' AND 'F*' ORDER BY [Customer_Addresses].[Cust_Code]" Dim da As New OleDbDataAdapter(sql, con) Dim ds As New DataSet Dim dt As New System.Data.DataTable da.Fill(ds) dt = ds.Tables(0).Copy() ugExport.DataSource = Nothing ugExport.DataSource = dt
这是，我认为，工作正常，我能够正确的范围加载到网格，并导出它们，如我所愿。 但是，用户已经回到我的身边，并表示没有加载所有的客户。
我觉得这有点奇怪，所以我加载了他们的数据库，并为自己testing。 在数据库中，有4位客户符合AF的范围，如图所示。
但是，当我在导出列表中查看客户范围AF时，只显示2个客户。
另外值得注意的是，在客户列表屏幕中有一个TextBox允许用户通过客户代码进行search – 当我input一个F时，所有4个客户都按预期显示。
尽pipe有4条符合条件的logging，但是地球上究竟只在“出口清单”中显示2条结果呢？
检查之间的语法，你会发现它把*作为文字字符看到这里https://support.office.com/en-us/article/Between-And-Operator-a435878d-63f7-4825-8c31-999432ae8223
您可以使用
Like "[AF]*"
相反，虽然。