Delphi - Either BOF or EOF is True, or the current record has been deleted

Question

This error showed when I tried to select on an empty table in MS SQL Server 2005: "either BOF or EOF is True, or the current record has been deleted". I have used TADOConnection and TADODataSet in Delphi 5 to connect and retrieve data from the database.

  Conn := TADOConnection.Create(nil);
  DataSet := TADODataSet.Create(nil);

  Conn.ConnectionString := 'Provider=SQLOLEDB.1;Password=sa;' +
                           'Persist Security Info=True;' +
                           'User ID=user;Initial Catalog=mydb;' +
                           'Data Source=MYPC\SQLEXPRESS;' +
                           'Use Procedure for Prepare=1;' +
                           'Auto Translate=True;Packet Size=4096;' +
                           'Workstation ID=MYPC;' +
                           'Use Encryption for Data=False;' +
                           'Tag with column collation when possible=False';
  Conn.LoginPrompt := False;
  Conn.Open;

  DataSet.Connection := Conn;
  DataSet.CommandText := 'SELECT * FROM MYTABLE';
  DataSet.Open;

  DataSet.Free;
  Conn.Free;

Is there a way to check if a database table is empty without incurring such error?

Answer 1

This error originally occured with an update to MDAC_TYP (to 2.6 from memory). According to an old Borland advisory "This is a bug in the SQL Server provider. Set CursorLocation = clUseClient to eliminate the error."

There was a ADOExpress patch available from Borland, but the link doesn't work. Embarcadero now host it here: ftp://ftpd.embarcadero.com/pub/delphi/devsupport/updates/adoexpress/d5adoupdate2.exe(Thanks for the official link Jeroen!)

I would recommend downloading and installing all patches listed on the Embarcadero site, assuming you can find them.