如何查看所有外表以及对应的MaxCompute表？

通过以下命令可以查看当前DB的所有外表以及对应的MaxCompute表： SELECT n.nspname ,c.relname ,s.srvname ,pg_catalog.array_to_string( ARRAY( SELECT pg_catalog.quote_ident(option_name) || ' ' || pg_catalog.quote_literal(option_value) FROM pg_catalog.pg_options_to_table(ftoptions) ) ,', ' ) FROM pg_catalog.pg_foreign_table f ,pg_catalog.pg_foreign_server s ,pg_catalog.pg_class c ,pg_catalog.pg_namespace n WHERE s.oid = f.ftserver and c.oid = f.ftrelid and c.relnamespace = n.oid and n.nspname not in ('hologres', 'hologres_statistic', 'pg_catalog', 'pg_toast') ;