Would love to see benchmarks! :)

But just for clarity in the discussion thread here, Hasura also compiles to a single query when only Postgres is being hit and I'd expect performance to be quite similar...

Ofcourse, if the GraphQL query requires federation across multiple Postgres databases or multiple databases or databases + other GraphQL / REST APIs, then Hasura breaks them up into multiple queries with a worst-case performance of a data-loader type set up.