"if you want to take full advantage of, say, jsonb in PostgreSQL you're out of luck"
I don't know if you can take 'full advantage' but with the Django ORM, you get special postgreSQL fields to take advantage of postgres jsonb. There is nothing stopping someone from developing more features specific to other RDBMS either... and if you need to write some queries in SQL, the Django ORM lets you do that easily alongside more traditional ORM queries.
I don't know if you can take 'full advantage' but with the Django ORM, you get special postgreSQL fields to take advantage of postgres jsonb. There is nothing stopping someone from developing more features specific to other RDBMS either... and if you need to write some queries in SQL, the Django ORM lets you do that easily alongside more traditional ORM queries.