This explains how to create a foreign data wrapper.
So how to list all the existing foreign data wrappers ?
This explains how to create a foreign data wrapper.
So how to list all the existing foreign data wrappers ?
Many FDWs are listed in the Postgres Wiki:
https://wiki.postgresql.org/wiki/Foreign_data_wrappers
psql has useful commands as well to know which FDWs are defined, e.g. \dew[+]:
psql -E and \dew+ to see the precise queries that target the catalog, and how they're stored in it.SELECT fdwname FROM pg_foreign_data_wrapper;
see https://www.postgresql.org/docs/current/catalog-pg-foreign-data-wrapper.html