VBA ADO 中case when语句如何写
时间: 2023-08-13 19:11:01 浏览: 261
在VBA ADO中,可以使用CASE WHEN语句来进行条件判断和返回不同的结果。下面是一个示例代码,展示了如何在VBA ADO中编写CASE WHEN语句:
```
Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim strSQL As String
' 连接数据库
conn.Open "Provider=SQLOLEDB;Data Source=myServerAddress;Initial Catalog=myDatabase;User ID=myUsername;Password=myPassword"
' 构建SQL语句
strSQL = "SELECT column1, column2, " & _
"CASE WHEN column3 = 'value1' THEN 'result1' " & _
" WHEN column3 = 'value2' THEN 'result2' " & _
" ELSE 'result3' END AS result " & _
"FROM myTable"
' 执行SQL语句
rs.Open strSQL, conn
' 处理查询结果
If Not rs.EOF Then
Do Until rs.EOF
' 获取结果
Dim result As String
result = rs.Fields("result").Value
' 处理结果
' ...
' 移动到下一行
rs.MoveNext
Loop
End If
' 清理资源
rs.Close
conn.Close
Set rs = Nothing
Set conn = Nothing
```
在上述示例中,我们使用了CASE WHEN语句来根据column3的值返回不同的结果。根据实际需求,你可以修改CASE WHEN语句的条件和返回结果。同时,你需要根据你的数据库连接信息修改连接字符串和SQL语句中的表名、列名等内容。
#### 引用[.reference_title]
- *1* *2* *3* [VBA + ADO 调用存储过程](https://blog.csdn.net/stone0823/article/details/101873043)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]
阅读全文