我这样将图片存入数据库为什么错？

Question

procedure TForm1.FormCreate(Sender: TObject);
 var
pjpg:tjpegimage;
pic:TMemoryStream;
begin
ADOQuery1.Close;
    ADOQuery1.SQL.Clear;
  ADOQuery1.SQL.Add('select * from ry');
   ADOQuery1.Open;
     ADOQuery1.Last;
pjpg:=tjpegimage.Create;
pjpg.LoadFromFile('c:\1.jpg');
pic:=TMemoryStream.Create;
pjpg.SaveToStream(pic);
pic.Position:=0;
TBlobField( ADOQuery1.FieldByName('image')).LoadFromStream(pic);
ADOQuery1.Post;
pic.Free;
pjpg.free;
end;
end.

Answer 1

用的是access数据库，image设为ole型的，在ADOQuery1.Post处老是出错