Comment by lioeters

I see, that's insightful. At first sight I thought of it as a kind of novelty, extending SQL with a visual grammar to integrate with a specific plotting library. But from your comments I can now imagine it has potential as a general solution for that space between data - wherever it comes from, it can typically be queried by SQL - and its visualization.

Thinking further, though, there might be value in extracting the specs of this "grammar of graphics" from SQL syntax and generalized, so other languages can implement the same interface.