postgresql – 如何列出所有外国服务器？

如何从psql命令行列出Postgres数据库中的所有外部服务器？
服务器可以在 create server之前创建

您可以查询系统目录 pg_foreign_server,例如：

select 
    srvname as name,srvowner::regrole as owner,fdwname as wrapper,srvoptions as options
from pg_foreign_server
join pg_foreign_data_wrapper w on w.oid = srvfdw;

      name      |  owner   |   wrapper    |                options                 
----------------+----------+--------------+----------------------------------------
 csv_server     | postgres | file_fdw     | 
 foreign_server | postgres | postgres_fdw | {host=localhost,port=5432,dbname=test}
(2 rows)