Question

我正在将我的应用程序从MSSQL切换到MYSQL。当我使用MSSQL时，我通过

检索了最后一个自动增量值

Private Sub dsImpoundInformation_Inserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceStatusEventArgs) Handles dsImpoundInformation.Inserted
    _impoundId = e.Command.Parameters("impoundId").Value
End Sub

Private Sub dsImpoundInformation_Inserting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs) Handles dsImpoundInformation.Inserting
    Dim impoundIdparam As New SqlClient.SqlParameter()
    impoundIdparam.ParameterName = "impoundId"
    impoundIdparam.Direction = System.Data.ParameterDirection.Output
    impoundIdparam.DbType = DbType.Int32
    impoundIdparam.Value = 0
    e.Command.Parameters.Add(impoundIdparam)
End Sub

和

InsertCommand="INSERT INTO LotManager_impounds (accountId, truckId, createdBy, driver, locationId, dateArrived, towedFrom, reasonForImpound, reasonForImpoundOther, impoundCity, impoundCounty, timeOfImpound, dateDeemedAbandoned, ticketNumber) VALUES (@accountId,@truckId,@createdBy,@driver,@locationId,@dateArrived,@towedFrom,@reasonForImpound,@reasonForImpoundOther,@impoundCity,@impoundCounty,@timeOfImpound,@dateDeemedAbandoned,@ticketNumber); SET @impoundId = SCOPE_IDENTITY();"

现在我试试

InsertCommand="INSERT INTO LotManager_impounds (accountId, truckId, createdBy, driver, locationId, dateArrived, towedFrom, reasonForImpound, reasonForImpoundOther, impoundCity, impoundCounty, timeOfImpound, dateDeemedAbandoned, ticketNumber) VALUES (@accountId,@truckId,@createdBy,@driver,@locationId,@dateArrived,@towedFrom,@reasonForImpound,@reasonForImpoundOther,@impoundCity,@impoundCounty,@timeOfImpound,@dateDeemedAbandoned,@ticketNumber); SET @impoundId = LAST_INSERT_ID();"

我收到错误：

您的SQL语法有错误;检查手册对应于您的MySQL服务器版本，以便使用正确的语法在第1行'0 = LAST_INSERT_ID（）'附近

当我尝试时：

InsertCommand="INSERT INTO LotManager_impounds (accountId, truckId, createdBy, driver, locationId, dateArrived, towedFrom, reasonForImpound, reasonForImpoundOther, impoundCity, impoundCounty, timeOfImpound, dateDeemedAbandoned, ticketNumber) VALUES (@accountId,@truckId,@createdBy,@driver,@locationId,@dateArrived,@towedFrom,@reasonForImpound,@reasonForImpoundOther,@impoundCity,@impoundCounty,@timeOfImpound,@dateDeemedAbandoned,@ticketNumber); SET impoundId = LAST_INSERT_ID();"

我收到错误：

未知的系统变量'impoundId'

最终，我只是想获取最后一个自动增量值，但我在其他应用程序中还有其他部分代码，我计划切换到依赖于输出参数的MYSQL。我还没有探索过使用存储过程，但是现在我想让它以类似于MSSQL的方式工作。

提前致谢。

Answer 1

最后我崩溃了，决定使用存储过程。这是以任何方式执行此操作的最佳方式，并使代码更清晰。对于那些遇到同样问题的人，我给你的建议是不要浪费你的时间来使它工作并只使用存储过程。

MySQL输出参数与asp.net和SqlDataSource控件

1 个答案: