sql - 行集不支持向后滚动

Question

我正在尝试使用以下代码查询 MySQL 数据库:

'declare the variables 
Dim Connection
Dim Recordset
Dim SQL

'declare the SQL statement that will query the database
SQL = "SELECT * FROM CUSIP"

'create an instance of the ADO connection and recordset objects
Set Connection = CreateObject("ADODB.Connection")
Set Recordset = CreateObject("ADODB.Recordset")

'open the connection to the database
Connection.Open "DSN=CCS_DSN;UID=root;PWD=password;Database=CCS"

Recordset.CursorType=adOpenDynamic

'Open the recordset object executing the SQL statement and return records 

Recordset.Open SQL,Connection
Recordset.MoveFirst

If Recordset.Find ("CUSIP_NAME='somevalue'") Then
    MsgBox "Found"
Else
    MsgBox "Not Found"
End If


'close the connection and recordset objects to free up resources
Recordset.Close
Set Recordset=nothing
Connection.Close
Set Connection=nothing

每当我执行上述操作时，我都会收到错误消息“行集不支持向后滚动”，有什么建议吗？

Answer 1

adOpenDynamic未在 VBScript 中声明，因此等于 Empty ，转换为 0当您分配 CursorType 时属性(property)。0是 adOpenForwardOnly ，并且只向前不支持向后移动，一种能力Find方法要。

您应该更换 adOpenDynamic其字面值:

Recordset.CursorType = 2 'adOpenDynamic

为了完全避免此类错误，放置 Option Explicit作为脚本的第一行。