Google searches for both sqlext_graph and sqlext_xwindows return your comment as the only result, but I'd love to learn more about these. Can you provide an exa

Google searches for both sqlext_graph and sqlext_xwindows return your comment as the only result, but I'd love to learn more about these. Can you provide an example of how to produce a scatter plot of, for example, the iris dataset, with points coloured by species? Also, by the time you're leveraging SQL extensions, are you really still "using SQL"?