title: Can tqdm be used with Database Reads?
body: <p>While reading large relations from a SQL database to a pandas dataframe, it would be nice to have a progress bar, because the number of tuples is known statically and the I/O rate could be estimated. It looks like the <code>tqdm</code> module has a function <code>tqdm_pandas</code> which will report progress on mapping functions over columns, but by default calling it does not have the effect of reporting progress on I/O like this. Is it possible to use <code>tqdm</code> to make a progress bar on a call to <code>pd.read_sql</code>?</p>