SQL更新查询标识符太长

Question

这是我的代码。

我正在尝试更新按钮上的记录

 Dim conn2 As SqlConnection
            Dim cmd2 As New SqlCommand
            conn2 = New SqlConnection("Persist Security Info=false;User Id=justin;Data Source=ARULJUSTIN\SQLEXPRESS;Initial Catalog=firemaintain;Integrated Security=True;Pooling=False")
            conn2.Open()
            cmd2.Connection = conn2
            'conn = "update hyrdranmaintain SET uhlcondition, uhdhcondition,uhrhcondition values @lcondition, @hcondition, @rhcondition Where Recordno = '" & txtcase.ToString & "'",conn
            cmd2.CommandText = "UPDATE hydrantmaintain SET uhlcondition, uhdhcondition, uhrhcondition values @lcondition, @hcondition, @rhcondition Where Recordno= @rcordno"
            cmd2.Parameters.AddWithValue("@lcondition", cmblv.SelectedItem)
            cmd2.Parameters.AddWithValue("@hcondition", cmbdh.SelectedItem)
            cmd2.Parameters.AddWithValue("@rhcondition", cmbrh.SelectedItem)
            cmd2.Parameters.AddWithValue("@rcordno", Trim(txtcase.ToString))
            cmd2.ExecuteNonQuery()

我收到了错误

System.Data.SqlClient.SqlException was unhandled Message=Incorrect syntax near ','

Answer 1

这不是更新的正确语法。它应该是这样的：

UPDATE hydrantmaintain 
   SET uhlcondition  = @lcondition
      ,uhdhcondition = @hcondition
      ,uhrhcondition = @rhcondition 
WHERE Recordno= @rcordno