SQL语句中的C＃MySQL语法错误

Question

我有这种简单的方法，应该将一行插入到数据库中。它抛出了一个例外。

private void AddToLiveQueue(int user_id, bool release = false) 
    { 
     string sql = "INSERT INTO live_support_queues (user_id, release, created_at, updated_at)"; 
     sql += " VALUES(?user_id, ?release, ?created_at, ?created_at)"; 

     MySqlConnection conn = new MySqlConnection(connString); 
     MySqlCommand cmd = conn.CreateCommand(); 
     cmd.CommandText = sql; 

     cmd.Parameters.AddWithValue("?user_id", user_id); 
     cmd.Parameters.AddWithValue("?release", release); 
     cmd.Parameters.AddWithValue("?created_at", DateTime.UtcNow); 


     try 
     { 
      conn.Open(); 
      cmd.ExecuteNonQuery(); 
      conn.Close(); 
     } 
     catch (Exception ex) 
     { 
      SendEmail email = new SendEmail(); 
      email.Send(ex.Message + "  " + ex.ToString()); 
     } 
    } 

我收到此错误：

"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'release, created_at, updated_at) VALUES(70, 0, '2017-09-22 23:00:16.686741', '20' at line 1" 

任何帮助是极大的赞赏。谢谢！

Answer 1

release是一个保留字，如果用作标识符，则需要使用符号进行转义。

https://dev.mysql.com/doc/refman/5.7/en/keywords.html