Question

在下面的代码片段中，我尝试使用mysql语句通过 vb.net

中的应用程序界面更新 student_info 表

Dim Connection As MySqlConnection
    Dim Command As MySqlCommand
    Connection = New MySqlConnection
    Connection.ConnectionString =
        "server=localhost;userid=root;password=root;database=student;"

    Try
        Dim DataReader As MySqlDataReader
        Connection.Open()
        Dim Query As String
        Query = "UPDATE student.student_info set (Student_Name='" & SName.Text & "',Date_of_Birth='" & DateTimePicker1.Text & "',Department='" & ComboBoxDept.Text & "') where Roll_Number = '" & SRoll.Text & "';"
        Command = New MySqlCommand(Query, Connection)
        DataReader = Command.ExecuteReader()
        MessageBox.Show("Data is Updated !")
        DataReader.Close()
        Connection.Close()
    Catch ex As Exception
        MessageBox.Show(ex.Message)
    Finally
        Connection.Dispose()
    End Try

我收到以下错误：您的SQL语法中有错误;请查看与您的MySql服务器版本对应的手册，以便在'（.......'第1行）附近使用正确的语法

以下是包含错误的图片：

Error Image

Answer 1

您不需要在UPDATE statemtment中使用括号，可以用逗号设置多个字段，例如：

Query = "UPDATE student.student_info set Student_Name='" & SName.Text & "', Date_of_Birth='" & DateTimePicker1.Text & "',Department='" & ComboBoxDept.Text & "' where Roll_Number = '" & SRoll.Text & "';"

通过vb.net更新mysql中的数据库时出现语法错误

1 个答案: