The main thing I didn't like about PlanetScale was that we couldn't run analytical queries on it. They bill based on the number of rows read, so even a simple count query could easily use up our allocated resources. Apart from that, I actually loved it. It's based on MySQL, so it doesn't have foreign key constraints or cascades. We have to delete manually or use an ORM. As it's based on MySQL, we can use log posters for complex queries, but it only supports MySQL. I feel like Postgres is more useful for custom or complex queries.
