VB.net到MySql存儲過程錯誤

Question

我是一個全新的存儲過程，所以我可能會錯過一些容易的事情，但我研究了基礎知識，並且我試圖從vb.net代碼中整合它。我創建了一個簡單的存儲過程（我認爲），只運行數據對今天的結果的查詢：

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- 常規DDL - 注意：評論之前和日常身體後會不會被存儲服務器

---

DELIMITER $$ 

CREATE DEFINER=`root`@`%` PROCEDURE `GetRuntestToday`() 
BEGIN 

Select * From runtest.runtest_records where 
Test_Date=CURDATE() 
order by test_date desc, Convert(test_time_stop,DECIMAL(5,2)) desc; 

END 

當我登錄到主MySql數據庫並嘗試從MySQL提示符下運行它，它似乎很好地工作。我只需鍵入call runtest.GetRuntestToday();並以命令提示符文本格式返回59行數據。

我寫了一個VB.net程序來試圖獲得相同的數據，但我不斷收到錯誤。錯誤異常詳細信息如下：

System.Data.Odbc.OdbcException was unhandled 
    ErrorCode=-2146232009 
    Message="ERROR [42000] [MySQL][ODBC 5.1 Driver][mysqld-5.1.51-community-log]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 'GetRuntestToday' at line 1" 
    Source="myodbc5.dll" 
    StackTrace: 
     at System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode) 
     at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String method, Boolean needReader, Object[] methodArguments, SQL_API odbcApiMethod) 
     at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String method, Boolean needReader) 
     at System.Data.Odbc.OdbcCommand.ExecuteReader(CommandBehavior behavior) 
     at System.Data.Odbc.OdbcCommand.ExecuteReader() 
     at MySqlHelper.mMain.DoMyStoredProcedure() in C:\vss\MySqlHelper\MySqlHelper\mMain.vb:line 2642 
     at MySqlHelper.mMain.Main() in C:\vss\MySqlHelper\MySqlHelper\mMain.vb:line 29 
     at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) 
     at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) 
     at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() 
     at System.Threading.ThreadHelper.ThreadStart_Context(Object state) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadHelper.ThreadStart() 
    InnerException: 

我運行的代碼是：

Public Sub DoMyStoredProcedure() 

    Dim MyConString As String = "My String Details" 
    Dim dbcRuntest As New OdbcConnection(MyConString) 


    Dim cmd As New OdbcCommand 
    Dim reader As OdbcDataReader 

    cmd.CommandText = "GetRuntestToday" 
    cmd.CommandType = CommandType.StoredProcedure 
    cmd.Connection = dbcRuntest 

    dbcRuntest.Open() 

    reader = cmd.ExecuteReader() 

    dbcRuntest.Close() 
End Sub 

錯誤發生就行了：

reader = cmd.ExecuteReader() 

我缺少什麼？我沒有看到任何語法問題，並且存儲過程在命令提示符下工作。我用DELIMITER做了一些改動//而不是$$，但似乎沒有解決它的問題。

Answer 1

你可以試着改變直接調用（我沒有測試過這一點：

cmd.CommandType = CommandType.Text 
cmd.CommandText = "CALL GetRuntestToday" 

此外，編寫代碼的一種更好的方式：

Dim MyConString As String = "My String Details" 
Using dbcRuntest As New OdbcConnection(MyConString) 
    dbcRuntest.Open() 
    Using cmd As New OdbcCommand("CALL GetRuntestToday", dbcRuntest) 
    cmd.CommandType = CommandType.Text 
    Using reader As OdbcDataReader = cmd.ExecuteReader 
     'do someting with reader' 
    End Using 
    End Using 
End Using 

的Using結構自動關閉連接並配置它（以及其他對象）

被編輯爲使用CALL而不是EXECUTE