“INSERT INTO 语句中的语法错误”和“没有为一个或多个必需参数提供值”

Posted 2023-05-07

【中文标题】“INSERT INTO 语句中的语法错误”和“没有为一个或多个必需参数提供值”

【英文标题】："Syntax error in INSERT INTO statement" and "No value given for one or more required parameters"

【发布时间】：2015-01-10 11:46:25

【问题描述】：

所以我正在使用连接到 Access 2010 数据库的 Visual Basic 2010 进行我的第一个计算项目，并且我的项目中出现了两个不同的错误代码，我似乎无法理解：

在允许用户更新信息的按钮的代码中，我收到错误消息

没有为一个或多个必需参数指定值。

当我在调试时单击按钮时。

这是按钮的代码：

Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
    Dim cbMember As New OleDb.OleDbCommandBuilder(daMember)   'returns items from text box to dataset
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(0) = txtMemberID.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(1) = txtForename.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(2) = txtSurname.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(3) = txtDOB.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(4) = txtSex.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(5) = txtPhone.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(6) = txtEmail.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(7) = txtAddress.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(8) = txtPostcode.Text
    daMember.Update(dsMember, "Members") 'updates items to database
    MsgBox("Data updated")`

我收到错误消息的代码行是daMember.Update(dsMember, "Members") 行。我怎样才能让它工作，因为我觉得我已经尝试了一切。

在向数据库添加新记录的按钮的代码中，我收到一条错误消息

INSERT INTO 语句中的语法错误

当我在调试时单击按钮时，我又一次不知道如何修复它。单击按钮时，我收到错误消息。

这是按钮的代码：

Private Sub btnCommit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCommit.Click

    If MemberRowNumber <> -1 Then 'checks for a valid record to add
        Dim cbMember As New OleDb.OleDbCommandBuilder(daMember)   'declare new variables specifically for this statement
        Dim dsMemberNewRow As DataRow
        dsMemberNewRow = dsMember.Tables("Members").NewRow() 'adds new row
        dsMemberNewRow.Item("MemberID") = txtMemberID.Text
        dsMemberNewRow.Item("Forename") = txtForename.Text    'contains values to add to new row
        dsMemberNewRow.Item("Surname") = txtSurname.Text
        dsMemberNewRow.Item("DOB") = txtDOB.Text
        dsMemberNewRow.Item("Sex") = txtSex.Text
        dsMemberNewRow.Item("Phone_Number") = txtPhone.Text
        dsMemberNewRow.Item("E-Mail_Address") = txtEmail.Text
        dsMemberNewRow.Item("Home_Address") = txtAddress.Text
        dsMemberNewRow.Item("Postcode") = txtPostcode.Text
        dsMember.Tables("Members").Rows.Add(dsMemberNewRow)  'creates new object
        daMember.Update(dsMember, "Members")
        MsgBox("New Record added to the Database")  'display message once process is completed

    End If

End Sub

与错误消息相关的代码行再次是daMember.Update(dsMember, "Members") 行。请帮忙，因为它让我沮丧地扯掉我的头发！

另外，由于这是我第一次在此网站上发布，因此如果措辞不当，我深表歉意，因此感谢您的耐心等待。提前谢谢！

这是完整的代码，如果有帮助的话：

Public Class member_details

Dim ParkwoodConnection As New OleDb.OleDbConnection      'this variable will now hold the control object
Dim Provider As String
Dim dbSource As String
Dim dsMember As New DataSet    'set up DataSet for members table
Dim daMember As OleDb.OleDbDataAdapter     'set up DataAdapter for members table
Dim dsRunning As New DataSet    'set up DataSet for Running table
Dim daRunning As OleDb.OleDbDataAdapter     'set up DataAdapter for Running table
Dim dsCycling As New DataSet    'set up DataSet for Cycling table
Dim daCycling As OleDb.OleDbDataAdapter     'set up DataAdapter for Cycling table
Dim dsSwimming As New DataSet    'set up DataSet for Swimming table
Dim daSwimming As OleDb.OleDbDataAdapter     'set up DataAdapter for Swimming table
Dim sqlMemberQuery As String
Dim sqlRunningQuery As String
Dim sqlCyclingQuery As String
Dim sqlSwimmingQuery As String
Dim MemberRowNumber As Integer
Dim MemberNumberOfRows As Integer
Dim dtRunning As New DataTable
Dim dtCycling As New DataTable
Dim dtSwimming As New DataTable

Private Sub AccessProject1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

    Provider = "PROVIDER=Microsoft.ACE.OLEDB.12.0;"         'technology used to conntect to database
    dbSource = "Data Source = training_log.accdb"           'pathname for database

    ParkwoodConnection.ConnectionString = Provider & dbSource        'establish connection between form and database

    ParkwoodConnection.Open()        'open database
    sqlMemberQuery = "SELECT * FROM tblMembers"       'select all records from database
    daMember = New OleDb.OleDbDataAdapter(sqlMemberQuery, ParkwoodConnection)     'pass object to daMember variable
    daMember.Fill(dsMember, "Members")       'fills dataset with records from table

    ParkwoodConnection.Close()       'close database

    MemberNumberOfRows = dsMember.Tables("Members").Rows.Count      'get how many rows are in tblMembers
    MemberRowNumber = 0   'set the intial row number to 0 when the form opens
    DisplayData()   'display the data on to the form

    Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
    dbSource = "Data Source = Training_Log.accdb"
    ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
    ParkwoodConnection.Open()
    sqlRunningQuery = "SELECT * FROM tblRunning WHERE MemberID =" & txtMemberID.Text  'Use sql to get the data from the database table
    daRunning = New OleDb.OleDbDataAdapter(sqlRunningQuery, ParkwoodConnection) 'Set up data adapter
    dtRunning.Clear()
    daRunning.Fill(dtRunning)
    grdRunResults.DataSource = dtRunning   'Populate the datagrid

    ParkwoodConnection.Close()   'Close the connection

    Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
    dbSource = "Data Source = Training_Log.accdb"
    ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
    ParkwoodConnection.Open()
    sqlSwimmingQuery = "SELECT * FROM tblSwimming WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
    daSwimming = New OleDb.OleDbDataAdapter(sqlSwimmingQuery, ParkwoodConnection) 'Set up data adapter
    dtSwimming.Clear()
    daSwimming.Fill(dtSwimming)
    grdSwimResults.DataSource = dtSwimming   'Populate the datagrid

    ParkwoodConnection.Close()   'Close the connection

    Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
    dbSource = "Data Source = Training_Log.accdb"
    ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
    ParkwoodConnection.Open()
    sqlCyclingQuery = "SELECT * FROM tblCycling WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
    daCycling = New OleDb.OleDbDataAdapter(sqlCyclingQuery, ParkwoodConnection) 'Set up data adapter
    dtCycling.Clear()
    daCycling.Fill(dtCycling)
    grdCycleResults.DataSource = dtCycling   'Populate the datagrid

    ParkwoodConnection.Close()   'Close the connection

End Sub

Private Sub DisplayData()

    txtMemberID.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(0) 'displays the members' ID in a text box
    txtForename.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(1) 'displays the members' forename in a text box
    txtSurname.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(2) 'displays the members' surname in a text box
    txtDOB.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(3)    'displays the members' date of birth in a text box
    txtSex.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(4)   'displays the members' sex
    txtPhone.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(5)    'displays the members' phone number in a text box
    txtEmail.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(6)  'displays the members' Emails in a text box
    txtAddress.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(7)    'displays the members' address in a text box
    txtPostcode.Text = dsMember.Tables("Members").Rows(MemberRowNumber).Item(8)   'displays the members' postcode in a text box

End Sub
Private Sub btnNextRecord_Click(sender As System.Object, e As System.EventArgs) Handles btnNextRecord.Click

    If MemberRowNumber <> MemberNumberOfRows - 1 Then   'moves forward to next row
        MemberRowNumber = MemberRowNumber + 1
        DisplayData()

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlRunningQuery = "SELECT * FROM tblRunning WHERE MemberID =" & txtMemberID.Text  'Use sql to get the data from the database table
        daRunning = New OleDb.OleDbDataAdapter(sqlRunningQuery, ParkwoodConnection) 'Set up data adapter
        dtRunning.Clear()
        daRunning.Fill(dtRunning)
        grdRunResults.DataSource = dtRunning   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlSwimmingQuery = "SELECT * FROM tblSwimming WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daSwimming = New OleDb.OleDbDataAdapter(sqlSwimmingQuery, ParkwoodConnection) 'Set up data adapter
        dtSwimming.Clear()
        daSwimming.Fill(dtSwimming)
        grdSwimResults.DataSource = dtSwimming   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlCyclingQuery = "SELECT * FROM tblCycling WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daCycling = New OleDb.OleDbDataAdapter(sqlCyclingQuery, ParkwoodConnection) 'Set up data adapter
        dtCycling.Clear()
        daCycling.Fill(dtCycling)
        grdCycleResults.DataSource = dtCycling   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

    Else
        MsgBox("No More Rows")      'display message when last row is reached
    End If

End Sub

Private Sub btnPreviousRecord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPreviousRecord.Click

    If MemberRowNumber > 0 Then   'moves to previous row
        MemberRowNumber = MemberRowNumber - 1
        DisplayData()
        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlRunningQuery = "SELECT * FROM tblRunning WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daRunning = New OleDb.OleDbDataAdapter(sqlRunningQuery, ParkwoodConnection) 'Set up data adapter
        dtRunning.Clear()
        daRunning.Fill(dtRunning)
        grdRunResults.DataSource = dtRunning  'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlSwimmingQuery = "SELECT * FROM tblSwimming WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daSwimming = New OleDb.OleDbDataAdapter(sqlSwimmingQuery, ParkwoodConnection) 'Set up data adapter
        dtSwimming.Clear()
        daSwimming.Fill(dtSwimming)
        grdSwimResults.DataSource = dtSwimming   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlCyclingQuery = "SELECT * FROM tblCycling WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daCycling = New OleDb.OleDbDataAdapter(sqlCyclingQuery, ParkwoodConnection) 'Set up data adapter
        dtCycling.Clear()
        daCycling.Fill(dtCycling)
        grdCycleResults.DataSource = dtCycling   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

    Else
        MsgBox("First Record")  'displays message if first row is reached
    End If

End Sub

Private Sub btnLastRecord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLastRecord.Click

    If MemberRowNumber <> MemberNumberOfRows - 1 Then   'moves to last record
        MemberRowNumber = MemberNumberOfRows - 1
        DisplayData()
        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlRunningQuery = "SELECT * FROM tblRunning WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daRunning = New OleDb.OleDbDataAdapter(sqlRunningQuery, ParkwoodConnection) 'Set up data adapter
        dtRunning.Clear()
        daRunning.Fill(dtRunning)
        grdRunResults.DataSource = dtRunning   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlSwimmingQuery = "SELECT * FROM tblSwimming WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daSwimming = New OleDb.OleDbDataAdapter(sqlSwimmingQuery, ParkwoodConnection) 'Set up data adapter
        dtSwimming.Clear()
        daSwimming.Fill(dtSwimming)
        grdSwimResults.DataSource = dtSwimming   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlCyclingQuery = "SELECT * FROM tblCycling WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daCycling = New OleDb.OleDbDataAdapter(sqlCyclingQuery, ParkwoodConnection) 'Set up data adapter
        dtCycling.Clear()
        daCycling.Fill(dtCycling)
        grdCycleResults.DataSource = dtCycling  'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

    End If

End Sub

Private Sub btnFirstRecord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFirstRecord.Click

    If MemberRowNumber <> 0 Then  'moves to first record
        MemberRowNumber = 0
        DisplayData()
        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlRunningQuery = "SELECT * FROM tblRunning WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daRunning = New OleDb.OleDbDataAdapter(sqlRunningQuery, ParkwoodConnection) 'Set up data adapter
        dtRunning.Clear()
        daRunning.Fill(dtRunning)
        grdRunResults.DataSource = dtRunning   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlSwimmingQuery = "SELECT * FROM tblSwimming WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daSwimming = New OleDb.OleDbDataAdapter(sqlSwimmingQuery, ParkwoodConnection) 'Set up data adapter
        dtSwimming.Clear()
        daSwimming.Fill(dtSwimming)
        grdSwimResults.DataSource = dtSwimming   'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

        Provider = "Provider = Microsoft.ACE.OLEDB.12.0;"   'Set up link to the database
        dbSource = "Data Source = Training_Log.accdb"
        ParkwoodConnection.ConnectionString = Provider & dbSource    'Open the database
        ParkwoodConnection.Open()
        sqlCyclingQuery = "SELECT * FROM tblCycling WHERE MemberID =" & txtMemberID.Text   'Use sql to get the data from the database table
        daCycling = New OleDb.OleDbDataAdapter(sqlCyclingQuery, ParkwoodConnection) 'Set up data adapter
        dtCycling.Clear()
        daCycling.Fill(dtCycling)
        grdCycleResults.DataSource = dtCycling  'Populate the datagrid

        ParkwoodConnection.Close()   'Close the connection

    End If

End Sub

Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click

    Dim cbMember As New OleDb.OleDbCommandBuilder(daMember)   'returns items from text box to dataset
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(0) = txtMemberID.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(1) = txtForename.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(2) = txtSurname.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(3) = txtDOB.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(4) = txtSex.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(5) = txtPhone.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(6) = txtEmail.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(7) = txtAddress.Text
    dsMember.Tables("Members").Rows(MemberRowNumber).Item(8) = txtPostcode.Text
    daMember.Update(dsMember, "Members") 'updates items to database
    MsgBox("Data updated")

End Sub

Private Sub btnAddNew_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddNew.Click

    txtMemberID.Clear()
    txtForename.Clear()    'clears the forename text box
    txtSurname.Clear()     'clears the surname text box
    txtDOB.Clear()     'clears the Date of Birth text box
    txtSex.Clear()     'clears the sex text box
    txtPhone.Clear()    'clears the phone number text box
    txtEmail.Clear()    'clears the email text box
    txtAddress.Clear()     'clears the Address text box
    txtPostcode.Clear()     'clears the postcode text box

    dtRunning.Clear()   'clears the running results table
    dtCycling.Clear()   'clears the cycling results table
    dtSwimming.Clear()  'clears the swimming results table

End Sub

Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click

    MemberRowNumber = 0   'clears fields
    DisplayData()

End Sub

Private Sub btnCommit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCommit.Click

    If MemberRowNumber <> -1 Then 'checks for a valid record to add
        Dim cbMember As New OleDb.OleDbCommandBuilder(daMember)   'declare new variables specifically for this statement
        Dim dsMemberNewRow As DataRow
        dsMemberNewRow = dsMember.Tables("Members").NewRow() 'adds new row
        dsMemberNewRow.Item("MemberID") = txtMemberID.Text
        dsMemberNewRow.Item("Forename") = txtForename.Text    'contains values to add to new row
        dsMemberNewRow.Item("Surname") = txtSurname.Text
        dsMemberNewRow.Item("DOB") = txtDOB.Text
        dsMemberNewRow.Item("Sex") = txtSex.Text
        dsMemberNewRow.Item("Phone_Number") = txtPhone.Text
        dsMemberNewRow.Item("E-Mail_Address") = txtEmail.Text
        dsMemberNewRow.Item("Home_Address") = txtAddress.Text
        dsMemberNewRow.Item("Postcode") = txtPostcode.Text
        dsMember.Tables("Members").Rows.Add(dsMemberNewRow)  'creates new object
        daMember.Update(dsMember, "Members")
        MsgBox("New Record added to the Database")  'display message once process is completed

    End If

End Sub

Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click

    If MessageBox.Show("Do you really want to Delete this Record?", _
                       "Delete", MessageBoxButtons.YesNo, _
                       MessageBoxIcon.Warning) = Windows.Forms.DialogResult.No Then
        MsgBox("Operation Cancelled")   'display message if record is not deleted
        Exit Sub
    End If

    Dim cbMember As New OleDb.OleDbCommandBuilder(daMember)
    dsMember.Tables("Members").Rows(MemberRowNumber).Delete()   'selects row to delete
    MemberNumberOfRows = MemberNumberOfRows - 1 'reduce number of rows
    MemberRowNumber = 0   'display first record
    DisplayData()
    daMember.Update(dsMember, "Members") 'updates database

End Sub

End Class

【问题讨论】：

这表示您在数据库中的表中的列比您在代码中设置的列多，或者您在代码中拥有的列之一为 null 并且您已使其不为 null桌子。从这里看不到，但这是您应该寻找的。​​span>

尝试相关问题here中的建议，看看是否有帮助。

【参考方案1】：

我多次遇到这个问题。 SQL查询的问题。这就是消息显示的原因是因为 SQL 解析器无法识别 SQL 查询中的标记并将其解释为您必须或需要提供值的参数。

给出价值。计算数据库的列，然后计算你有多少值。然后，给它一个参数，并确保你没有错过任何一个。