Question

我正在尝试创建一个userform - 它将包含不同年份的复选框和不同查询的命令按钮。因此，例如，如果用户选择了三个复选框-1990,1993,1995，然后用户单击特定查询。然后，该查询必须在该年进入该查询的＆＃34; 其中部分时执行＃34; 这是我的代码： -

*

  Private Sub CommandButton1_Click()
    Dim connection As New ADODB.connection
    Dim rst As New Recordset
    Dim strConnectionStr As String
    Dim Qry As String
    strConnectionStr = "Provider=SQLOLEDB;" & "DATA SOURCE=" & _
                      "INITIAL CATALOG=;" & _
                      "UID=; PWD="
    Qry = "  SELECT d.Year,d.[University name],d.[School name], COUNT(distinct d.Title) 'Number of paper published'from [dbo].[Ashish$] d where [Business/Non-business]='1'group by d.Year,d.[University name],d.[School name]  order by d.[Year], [Number of paper published] desc;"

    ActiveSheet.Cells.ClearContents
    connection.Open strConnectionStr
    rst.Open Qry, connection
    For iCols = 0 To rst.Fields.Count - 1
        Sheets("Query1").Cells(1, iCols + 1).Value = rst.Fields(iCols).Name
    Next
    Sheets("Query1").Range("A2").CopyFromRecordset rst*`


    rst.Close
    connection.Close

    End Sub


Above is the code for normal command buttons without check box . Below is the code for taking user inputs by checkboxes ...

    Private Sub CommandButton1_Click()
    Dim connection As New ADODB.connection
    Dim rst As New Recordset
    Dim strConnectionStr As String
    Dim Qry As String
    Dim ctl As Control
    Dim i As Integer
    i = 0
    strConnectionStr = "Provider=SQLOLEDB;" & "DATA SOURCE=;" & _
                      "INITIAL CATALOG=;" & _
                      "UID=; PWD="
    If CheckBox6.Value = True Then
       year1 = CheckBox6.Caption
       i = i + 1
    End If
    If CheckBox5.Value = True Then
       year2 = CheckBox5.Caption
       i = i + 1
    End If

    Qry = "  SELECT d.Year,d.[University name],d.[School name], COUNT(distinct d.Title) 'Number of paper published'from [dbo].[Ashish$] d where [Business/Non-business]='1'  and d.Year=CheckBox6.Caption  group by d.Year,d.[University name],d.[School name]  order by d.[Year], [Number of paper published] desc;"

    ActiveSheet.Cells.ClearContents

    connection.Open strConnectionStr

    rst.Open Qry, connection

    For iCols = 0 To rst.Fields.Count - 1
        Sheets("Query1").Cells(1, iCols + 1).Value = rst.Fields(iCols).Name
    Next

    Sheets("Query1").Range("A2").CopyFromRecordset rst


    rst.Close
    connection.Close
    End Sub

UB

基本上我无法从复选框中获取值，并在查询语句中使用它们。

我需要帮助。任何人都可以指导我吗？

编辑：以下内容最初是作为答案发布的：

If CheckBox1.Value = True Then
 y1 = CheckBox1.Caption
 i = i + 1
End If
If CheckBox2.Value = True Then
 y2 = CheckBox2.Caption
 i = i + 1
End If

If CheckBox3.Value = True Then
x1 = CheckBox3.Caption
j = j + 1
End If

If CheckBox4.Value = True Then
x2 = CheckBox4.Caption
j = j + 1
End If

If CheckBox5.Value = True Then
x3 = CheckBox5.Caption
j = j + 1
End If

If i = 0 Then
MsgBox "Select at least one year "
End If

If j = 0 Then
MsgBox "Select at least one journal "
End If


strConnectionStr = "Provider=SQLOLEDB;" & "DATA SOURCE=;" & _
                  "INITIAL CATALOG=;" & _
                  "UID=; PWD="
Qry = "  SELECT d.Year,d.[University name],d.[School name], COUNT(distinct d.Title) 'Number of paper published'from [dbo].[Ashish$] d where [Business/Non-business]='1' and "
Qry = Qry & "[Year] IN (" & y1 & "," & y2 & ") and [Name] IN  (" & x3 & "," & x4 & ") & vbCrLf"
Qry = Qry & "group by d.Year,d.[University name],d.[School name]  order by d.[Year], [Number of paper published] desc;"

ActiveSheet.Cells.ClearContents

connection.Open strConnectionStr

rst.Open Qry, connection

For iCols = 0 To rst.Fields.Count - 1
    Sheets("Query1").Cells(1, iCols + 1).Value = rst.Fields(iCols).Name
Next

Sheets("Query1").Range("A2").CopyFromRecordset rst


rst.Close
connection.Close
End Sub

以上是我的代码，问题发布在我的上一条评论中

Answer 1

它就像...and d.Year=" & CheckBox6.Caption & " group by...

一样简单

如果要使用变量的值，则必须在双引号之外。然后，您可以使用&运算符将这些部分重新组合在一起。

但是：通过将字符串连接在一起构建来自用户输入的SQL查询是一件麻烦事。 SQL注入可能是非常现实的 - 请参阅here和here

您可以将ADODB Command object与Parameters collection结合使用，以安全的方式执行参数化查询。有关如何操作的说明，请参阅this answer

编辑：如果某些值是文本字符串，那么它们应该用单引号括起来，如下所示：

and [Name] IN ('" & x3 & "','" & x4 & "')

将产生如下输出：

and [Name] IN ('Academy of Science','Foo')

如果只有一些变量可能有值，那么你需要以不同的方式构造IN子句：

Dim yearsChosen As String

If CheckBox1.Value = True Then
    yearsChosen = yearsChosen & "," & CheckBox1.Caption
    i = i + 1
End If
If CheckBox2.Value = True Then
    yearsChosen = yearsChosen & "," & CheckBox2.Caption
    i = i + 1
End If

' Check to see if anything was selected - if it was, remove the
' leading comma and add the AND [Year] IN part
If Len(yearsChosen <> 0) Then
    yearsChosen = " AND [Year] IN (" & Mid$(yearsChosen, 2) & ")"
End If

名称部分的工作方式类似，除了您需要围绕值的单引号：

namesChosen = namesChosen & ",'" & CheckBox5.Caption & "'"

构建SQL查询非常简单：

Qry = "  SELECT d.Year,d.[University name],d.[School name], COUNT(distinct d.Title) 'Number of paper published'from [dbo].[Ashish$] d where [Business/Non-business]='1' "
Qry = Qry & yearsChosen & namesChosen & vbCrLf
Qry = Qry & "group by d.Year,d.[University name],d.[School name]  order by d.[Year], [Number of paper published] desc;"

用于在VBA中获取sql查询的输入的复选框（userform-excel）

1 个答案: