VB.net到MySql存储过程错误

Question

我是一个全新的存储过程，所以我可能会错过一些容易的事情，但我研究了基础知识，并且我试图从vb.net代码中整合它。我创建了一个简单的存储过程（我认为），只运行数据对今天的结果的查询：

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- 常规DDL - 注意：评论之前和日常身体后会不会被存储服务器

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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 

当我登录到主MySql数据库并尝试从MySQL提示符下运行它，它似乎很好地工作。我只需键入call runtest.GetRuntestToday();并以命令提示符文本格式返回59行数据。

我写了一个VB.net程序来试图获得相同的数据，但我不断收到错误。错误异常详细信息如下：

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: 

我运行的代码是：

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 

错误发生就行了：

reader = cmd.ExecuteReader() 

我缺少什么？我没有看到任何语法问题，并且存储过程在命令提示符下工作。我用DELIMITER做了一些改动//而不是$$，但似乎没有解决它的问题。

Answer 1

你可以试着改变直接调用（我没有测试过这一点：

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

此外，编写代码的一种更好的方式：

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结构自动关闭连接并配置它（以及其他对象）

被编辑为使用CALL而不是EXECUTE