Microsoft KB Archive/168194

= PRB: DAO Recordset Name Property Is Limited to 256 Characters =

Article ID: 168194

Article Last Modified on 6/28/2004

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APPLIES TO


 * Microsoft Visual Basic 5.0 Learning Edition
 * Microsoft Visual Basic 6.0 Learning Edition
 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 6.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition
 * Microsoft Visual Basic 6.0 Enterprise Edition
 * Microsoft Visual Basic 4.0 Standard Edition
 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 16-bit Enterprise Edition
 * Microsoft Visual Basic 4.0 32-Bit Enterprise Edition

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This article was previously published under Q168194



SYMPTOMS
The Name property of a DAO Recordset object is limited to 256 characters. It only reports the first 256 characters of the SQL statement used to create the new Recordset. If the SQL statement is longer than 256 characters, and you refresh the Data Control in the code later on, you will receive one of the following errors:

"Run-time error '3061': Too few parameters. Expected 1"

-or-

"Run-time error '3075': Syntax error in string in query expression 'xxxx'"



CAUSE
When you set the Data Control's Recordset property to an existing Recordset, it obtains its RecordSource property from the DAO Recordset's Name property, which allows a maximum length of 256 characters.



RESOLUTION
Store the SQL statement into a string variable. Before refreshing the Data Control, set its RecordSource Property to this variable. For example: Data1.RecordSource = SQLStr Data1.Refresh



STATUS
This behavior is by design.



Steps to Reproduce Behavior
 Start a new project in Visual Basic. Form1 is created by default. Add a Data Control(Data1) and a CommandButton (Command1) to Form1.  In the Click event of Command1, place the following code: Private Sub Command1_Click Dim DB As Database, RS As Recordset Dim SQLStr As String

Set DB = DBEngine.Workspaces(0).OpenDatabase("Biblio.MDB")

'This SQL Statement causes Run-time error 3075. SQLStr = "Select PubID, Name, [Company Name], Address, " _ & "City, State, PubID, Name, [Company Name], Address, City, " _ & "State, PubID, Name, [Company Name], Address, City, State, " _ & "PubID, Name, [Company Name], Address, City, State " _ & "from Publishers Where PubID = 2 and State = 'MA'"

'This SQL Statement causes Run-time error 3061. 'SQLStr = "Select PubID, Name, [Company Name], Address, City, " _ ' & "State, PubID, Name, [Company Name], Address, City, State, " _ ' & "PubID, Name, [Company Name], Address, City, State, " _ ' & "PubID, Name, [Company Name], Address, City, State, " _ ' & "PubID from Publishers Where PubID = 2 and State = 'MA'"

Set RS = DB.OpenRecordset(SQLStr, dbOpenDynaset) Set Data1.Recordset = RS       Debug.Print RS.Name Debug.Print Data1.RecordSource Data1.Refresh

End Sub  Start the program by pressing the F5 key. Click the Command1 button to execute the code and note that you receive one of the above errors.</li></ol>

Additional query words: kbVBp500 kbVBp600 kbdse kbDSupport kbVBp kbVBp400 kbDAO

Keywords: kbprb KB168194

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