A table partition must be a table, not a view, so don't allow a
"_RETURN" rule to be added that would convert an existing table
partition into a view.

Amit Langote

Discussion: https://postgr.es/m/CAEZATCVzFcAjZwC1bTFvJ09skB_sgkF4SwPKMywev-XTnimp9Q%40mail.gmail.com