Question

Trailing zeroes in numeric fields being truncated in ADO recordset

Asked by: wfinn

Hello Experts,

I have a visual basic dll that is executing a query on Sybase System 11 using ADO.  If I execute the query in Sybase, or look directly at the table the results are 100% correct.  When the data is retrieved into the ADO recordset, any numeric fields have trailing zeroes removed.  For example the number 1850 will be returned as 185, 1500 will be returned as 15.

Now just for interest, I tried the same query, and swithed to microsoft RDO drivers.  With RDO everything worked correctly.  However, switching to RDO is not an option for me at this point.

I have checked the web and found a hit on the microsoft web site that talked about this exact problem.  However they indicated it should have been fixed with mdac version 2.5.  I am running mdac version 2.7.

I am at a loss as to what else could be causing the problem.  This is a very urgent problem as it is affecting a production application.  It has been shutdown until this is resolved.   Does anyone have a solution for this problem?

Thanks,

wfinn

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Asked On
2003-06-11 at 17:05:20ID20645220
Topic

Visual Basic Programming

Participating Experts
3
Points
500
Comments
9

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Answers

 

by: supunrPosted on 2003-06-11 at 17:16:42ID: 8704384

I am not sure if this is going to work or not.  First of all is the Database located in a different computer?  If so does it have the latest MDAC installed.  May be try using client side cursors instead of server side or otherway around and see if that is going to make any difference.

 

by: SethiPosted on 2003-06-11 at 18:48:23ID: 8704794

Install MDAC 2.7 Refresh and change the OLE DB drivers for Try using default MDASQL drivers. If the result is correct then  there is some problem with OLEDB drivers you are using.

 

by: Asif_SaadatPosted on 2003-06-11 at 23:57:27ID: 8706227

wat query u using?

 

by: wfinnPosted on 2003-06-12 at 06:45:06ID: 8708695

In answer to your comments:

supunr:  The database is on a different computer.  It is running sybase on a unix machine.  I am not using cursors.

Sethi:  I tried installing MDAC 2.7 Refresh.  No luck.  I still get the same result.  I am not sure what you mean by using the default MDASQL drivers.  How do I do that?

Asif_Saadat:  Here is the code I am using.  The query really doesn't matter.  I will just show you a very simple example that fails.

Private Sub Command1_Click()
Dim strQuery As String
Dim mobjSybaseConnector As libEFTSybase.EFTSybaseConnect
Dim madconDB As ADODB.Connection ' Database Connection

Set mobjSybaseConnector = New libEFTSybase.EFTSybaseConnect
Set madconDB = mobjSybaseConnector.adconGetConnection
   

strQuery = "SELECT amount from teft"

    Dim objCmd As ADODB.Command
    Dim objRS As ADODB.Recordset
    Set objCmd = New ADODB.Command
    With objCmd
        Set .ActiveConnection = madconDB
        .CommandType = adCmdText
        'Input Parameters
        .CommandText = strQuery
        Set objRS = .Execute
    End With
   
    While Not objRS.EOF
        objRS.MoveNext
    Wend

End Sub

 

by: SethiPosted on 2003-06-12 at 07:53:50ID: 8709373

When you create a DSN specify provider other than Sybase. Try OLEDB for ODBC. Although this is not a permanent solution but it will help in determining the source of error.

 

by: wfinnPosted on 2003-06-12 at 09:28:13ID: 8710329

I do not have anything called OLEDB for ODBC or any default driver close to that on my PC.   Is there a web site that I can download such driver from?

 

by: SethiPosted on 2003-06-12 at 16:55:00ID: 8713542

When you install MDAC these drivers are installed on your machine. How are you creating your DSN?

 

by: wfinnPosted on 2003-06-13 at 06:24:57ID: 8717544

I am reading the values from the Registry.  Here is the code that creates the connection:

'   get connection variables from the registry
    strUserId = objRegistry.ReadDataWithDefault(HKEY_LOCAL_MACHINE, _
                                mstrREG_ROOTKEY, _
                                mstrREG_USERID_KEY, _
                                mstrREG_DEFAULT_USID)
   
    Set objEnv = New libEnvironment.Environment
   
    strEncryptedPwd = objRegistry.ReadDataWithDefault(HKEY_LOCAL_MACHINE, _
                        mstrREG_ROOTKEY, _
                        mstrREG_PASSWORD_KEY, _
                        objEnv.Encrypt(mstrREG_DEFAULT_PASSWORD, mstrREG_DECRYPTION_KEY))
                               
    strDriver = objRegistry.ReadDataWithDefault(HKEY_LOCAL_MACHINE, _
                                mstrREG_ROOTKEY, _
                                mstrREG_DRIVER_KEY, _
                                mstrREG_DEFAULT_DRIVER)
                               
    strLibraryName = objRegistry.ReadDataWithDefault(HKEY_LOCAL_MACHINE, _
                                 mstrREG_ROOTKEY, _
                                 mstrREG_LIBRARY_KEY, _
                                 mstrREG_DEFAULT_LIBRARY)
                               
    strOther = objRegistry.ReadDataWithDefault(HKEY_LOCAL_MACHINE, _
                                mstrREG_ROOTKEY, _
                                mstrREG_OTHER_KEY, _
                                mstrREG_DEFAULT_OTHER)
                               
    Set objRegistry = Nothing

'   the password in the registry is encrypted so decrypt it

    strPassword = objEnv.Decrypt(strEncryptedPwd, mstrREG_DECRYPTION_KEY)
    Set objEnv = Nothing
    Set adconThis = New ADODB.Connection
    With adconThis
       
'   build dsnless connection string
        .ConnectionString = "Driver=" & strDriver & ";" & _
                    "UID=" & strUserId & ";" & _
                    "PWD=" & strPassword & ";" & _
                    "SRVR=" & strLibraryName & ";" & _
                    strOther
 
        .Open
     End With

 

by: wfinnPosted on 2003-06-17 at 12:37:45ID: 8743619

supunr:

As it turns out, your comment had the answer in it.  I didn't realize that by default ADO uses Server side cursors.  I changed the code to use Client side cursers by using the command objRS.CursorLocation = adUseClient.

Thanks for your help.

20120131-EE-VQP-002

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