What am I missing?
(Specifying the whole file name because multiple versions are installed.)
$ /usr/lib/postgresql/12/bin/pg_dump --version
pg_dump (PostgreSQL) 12.5 (Ubuntu 12.5-1.pgdg18.04+1)
postgres=# \d+ measurement
psql? on (default) port 5432
$ /usr/lib/postgresql/12/bin/pg_dump -p5433 -d postgres -t measurement --data-only
pg_dump on port 5433
Usually different ports means different clusters
David J.
