您的SQL語法錯誤;檢查與您的SQL相對應的手冊

Question

您好我新來的Visual Studio，我總是得到這個錯誤「您的SQL語法錯誤;檢查手冊，對應您的SQL」

這是我的代碼，你

Public Class Form1 
    Dim MysqlConn As MySql.Data.MySqlClient.MySqlConnection 

    Dim UsersCommand As New MySql.Data.MySqlClient.MySqlCommand 

    Dim UsersAdapter As New MySql.Data.MySqlClient.MySqlDataAdapter 

    Dim UsersData As New DataTable 

    Dim SQL As String 
    Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick 

    End Sub 

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
     MysqlConn = New MySql.Data.MySqlClient.MySqlConnection() 
     ' Define the SQL to prob data from table. 
     SQL = "Select FROM wala" 
     'Connection String 
     MysqlConn.ConnectionString = "server=localhost;" & "user id=Taena;" & "password=Taena;" & "database=wala" 
     Try 
      MysqlConn.Open() 
      UsersCommand.Connection = MysqlConn 
      UsersCommand.CommandText = SQL 
      UsersAdapter.SelectCommand = UsersCommand 
      UsersAdapter.Fill(UsersData) 
      DataGridView1.DataSource = UsersData 

     Catch myerror As MySql.Data.MySqlClient.MySqlException 
      MessageBox.Show("Cannot connect to database1" & myerror.Message) 
     Finally 
      MysqlConn.Close() 
      MysqlConn.Dispose() 

     End Try 
    End Sub 
End Class 

Answer 1

你錯過了你想從wala tzable中選擇的列。 *是所有列。嘗試

Select * FROM wala 

，甚至更好地明確你需要這樣的

select id, other_column from wala 

Answer 2

Select FROM wala 

你沒有告訴它什麼選擇列 - 嘗試

Select * FROM wala 

Answer 3

你需要指定列名或*在選擇查詢的地方。這很簡單。