Describe the issue
Creating a new connection in version 42.5.2 will always execute the following query on a default PG installation:

SELECT pg_type.oid, typname   FROM pg_catalog.pg_type   LEFT   JOIN (select ns.oid as nspoid, ns.nspname, r.r           from pg_namespace as ns           join ( select s.r, (current_schemas(false))[s.r] as nspname                    from generate_series(1, array_upper(current_schemas(false), 1)) as s(r) ) as r          using ( nspname )        ) as sp     ON sp.nspoid = typnamespace  WHERE typname = ?  ORDER BY sp.r, pg_type.oid DESC LIMIT 1

This makes creating a new connection more expensive than in previous versions.

See cb78d0e#r99017399 for more details.

Driver Version?
42.5.2

Java Version?
open-jdk17

OS Version?
MacOS

PostgreSQL Version?
13.4

To Reproduce
Create a new JDBC connection to a standard PG server.

Expected behaviour
Creating a new connection should not automatically execute any queries.