text: --
  -- Test foreign-data wrapper and server management.
  --
  
  -- Clean up in case a prior regression run failed
  
  -- Suppress NOTICE messages when roles don't exist
  SET client_min_messages TO 'error';
  
  DROP ROLE IF EXISTS foreign_data_user, regress_test_role, regress_test_role2, regress_test_role_super, regress_test_indirect, unpriviled_role;
  
  RESET client_min_messages;
  
  CREATE ROLE foreign_data_user LOGIN SUPERUSER;
  SET SESSION AUTHORIZATION 'foreign_data_user';
  
  CREATE ROLE regress_test_role;
  CREATE ROLE regress_test_role2;
  CREATE ROLE regress_test_role_super SUPERUSER;
  CREATE ROLE regress_test_indirect;
  CREATE ROLE unprivileged_role;
  
  CREATE FOREIGN DATA WRAPPER dummy;
  COMMENT ON FOREIGN DATA WRAPPER dummy IS 'useless';
  CREATE FOREIGN DATA WRAPPER postgresql VALIDATOR postgresql_fdw_validator;
  
  -- At this point we should have 2 built-in wrappers and no servers.
  SELECT fdwname, fdwhandler::regproc, fdwvalidator::regproc, fdwoptions FROM pg_foreign_data_wrapper ORDER BY 1, 2, 3;
  SELECT srvname, srvoptions FROM pg_foreign_server;
  SELECT * FROM pg_user_mapping;
  
  -- CREATE FOREIGN DATA WRAPPER
  CREATE FOREIGN DATA WRAPPER foo VALIDATOR bar;            -- ERROR
  CREATE FOREIGN DATA WRAPPER foo;
  \dew
  
  CREATE FOREIGN DATA WRAPPER foo; -- duplicate
  DROP FOREIGN DATA WRAPPER foo;
  CREATE FOREIGN DATA WRAPPER foo OPTIONS (testing '1');
  \dew+
  
  DROP FOREIGN DATA WRAPPER foo;
  CREATE FOREIGN DATA WRAPPER foo OPTIONS (testing '1', testing '2');   -- ERROR
  CREATE FOREIGN DATA WRAPPER foo OPTIONS (testing '1', another '2');
  \dew+
  
  DROP FOREIGN DATA WRAPPER foo;
  SET ROLE regress_test_role;
  CREATE FOREIGN DATA WRAPPER foo; -- ERROR
  RESET ROLE;
  CREATE FOREIGN DATA WRAPPER foo VALIDATOR postgresql_fdw_validator;
  \dew+
  
  -- ALTER FOREIGN DATA WRAPPER
  ALTER FOREIGN DATA WRAPPER foo;                             -- ERROR
  ALTER FOREIGN DATA WRAPPER foo VALIDATOR bar;               -- ERROR
  ALTER FOREIGN DATA WRAPPER foo NO VALIDATOR;
  \dew+
  
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (a '1', b '2');
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (SET c '4');         -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (DROP c);            -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (ADD x '1', DROP x);
  \dew+
  
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (DROP a, SET b '3', ADD c '4');
  \dew+
  
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (a '2');
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (b '4');             -- ERROR
  \dew+
  
  SET ROLE regress_test_role;
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (ADD d '5');         -- ERROR
  SET ROLE regress_test_role_super;
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (ADD d '5');
  \dew+
  
  ALTER FOREIGN DATA WRAPPER foo OWNER TO regress_test_role;  -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OWNER TO regress_test_role_super;
  ALTER ROLE regress_test_role_super NOSUPERUSER;
  SET ROLE regress_test_role_super;
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (ADD e '6');         -- ERROR
  RESET ROLE;
  \dew+
  
  ALTER FOREIGN DATA WRAPPER foo RENAME TO foo1;
  \dew+
  ALTER FOREIGN DATA WRAPPER foo1 RENAME TO foo;
  
  -- DROP FOREIGN DATA WRAPPER
  DROP FOREIGN DATA WRAPPER nonexistent;                      -- ERROR
  DROP FOREIGN DATA WRAPPER IF EXISTS nonexistent;
  \dew+
  
  DROP ROLE regress_test_role_super;                          -- ERROR
  SET ROLE regress_test_role_super;
  DROP FOREIGN DATA WRAPPER foo;
  RESET ROLE;
  DROP ROLE regress_test_role_super;
  \dew+
  
  CREATE FOREIGN DATA WRAPPER foo;
  CREATE SERVER s1 FOREIGN DATA WRAPPER foo;
  COMMENT ON SERVER s1 IS 'foreign server';
  CREATE USER MAPPING FOR current_user SERVER s1;
  \dew+
  \des+
  \deu+
  DROP FOREIGN DATA WRAPPER foo;                              -- ERROR
  SET ROLE regress_test_role;
  DROP FOREIGN DATA WRAPPER foo CASCADE;                      -- ERROR
  RESET ROLE;
  DROP FOREIGN DATA WRAPPER foo CASCADE;
  \dew+
  \des+
  \deu+
  
  -- exercise CREATE SERVER
  CREATE SERVER s1 FOREIGN DATA WRAPPER foo;                  -- ERROR
  CREATE FOREIGN DATA WRAPPER foo OPTIONS ("test wrapper" 'true');
  CREATE SERVER s1 FOREIGN DATA WRAPPER foo;
  CREATE SERVER s1 FOREIGN DATA WRAPPER foo;                  -- ERROR
  CREATE SERVER s2 FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
  CREATE SERVER s3 TYPE 'oracle' FOREIGN DATA WRAPPER foo;
  CREATE SERVER s4 TYPE 'oracle' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
  CREATE SERVER s5 VERSION '15.0' FOREIGN DATA WRAPPER foo;
  CREATE SERVER s6 VERSION '16.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
  CREATE SERVER s7 TYPE 'oracle' VERSION '17.0' FOREIGN DATA WRAPPER foo OPTIONS (host 'a', dbname 'b');
  CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (foo '1'); -- ERROR
  CREATE SERVER s8 FOREIGN DATA WRAPPER postgresql OPTIONS (host 'localhost', dbname 's8db');
  \des+
  SET ROLE regress_test_role;
  CREATE SERVER t1 FOREIGN DATA WRAPPER foo;                 -- ERROR: no usage on FDW
  RESET ROLE;
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_role;
  SET ROLE regress_test_role;
  CREATE SERVER t1 FOREIGN DATA WRAPPER foo;
  RESET ROLE;
  \des+
  
  REVOKE USAGE ON FOREIGN DATA WRAPPER foo FROM regress_test_role;
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_indirect;
  SET ROLE regress_test_role;
  CREATE SERVER t2 FOREIGN DATA WRAPPER foo;                 -- ERROR
  RESET ROLE;
  GRANT regress_test_indirect TO regress_test_role;
  SET ROLE regress_test_role;
  CREATE SERVER t2 FOREIGN DATA WRAPPER foo;
  \des+
  RESET ROLE;
  REVOKE regress_test_indirect FROM regress_test_role;
  
  -- ALTER SERVER
  ALTER SERVER s0;                                            -- ERROR
  ALTER SERVER s0 OPTIONS (a '1');                            -- ERROR
  ALTER SERVER s1 VERSION '1.0' OPTIONS (servername 's1');
  ALTER SERVER s2 VERSION '1.1';
  ALTER SERVER s3 OPTIONS ("tns name" 'orcl', port '1521');
  GRANT USAGE ON FOREIGN SERVER s1 TO regress_test_role;
  GRANT USAGE ON FOREIGN SERVER s6 TO regress_test_role2 WITH GRANT OPTION;
  \des+
  SET ROLE regress_test_role;
  ALTER SERVER s1 VERSION '1.1';                              -- ERROR
  ALTER SERVER s1 OWNER TO regress_test_role;                 -- ERROR
  RESET ROLE;
  ALTER SERVER s1 OWNER TO regress_test_role;
  GRANT regress_test_role2 TO regress_test_role;
  SET ROLE regress_test_role;
  ALTER SERVER s1 VERSION '1.1';
  ALTER SERVER s1 OWNER TO regress_test_role2;                -- ERROR
  RESET ROLE;
  ALTER SERVER s8 OPTIONS (foo '1');                          -- ERROR option validation
  ALTER SERVER s8 OPTIONS (connect_timeout '30', SET dbname 'db1', DROP host);
  SET ROLE regress_test_role;
  ALTER SERVER s1 OWNER TO regress_test_indirect;             -- ERROR
  RESET ROLE;
  GRANT regress_test_indirect TO regress_test_role;
  SET ROLE regress_test_role;
  ALTER SERVER s1 OWNER TO regress_test_indirect;
  RESET ROLE;
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_indirect;
  SET ROLE regress_test_role;
  ALTER SERVER s1 OWNER TO regress_test_indirect;
  RESET ROLE;
  DROP ROLE regress_test_indirect;                            -- ERROR
  \des+
  
  ALTER SERVER s8 RENAME to s8new;
  \des+
  ALTER SERVER s8new RENAME to s8;
  
  -- DROP SERVER
  DROP SERVER nonexistent;                                    -- ERROR
  DROP SERVER IF EXISTS nonexistent;
  \des
  SET ROLE regress_test_role;
  DROP SERVER s2;                                             -- ERROR
  DROP SERVER s1;
  RESET ROLE;
  \des
  ALTER SERVER s2 OWNER TO regress_test_role;
  SET ROLE regress_test_role;
  DROP SERVER s2;
  RESET ROLE;
  \des
  CREATE USER MAPPING FOR current_user SERVER s3;
  \deu
  DROP SERVER s3;                                             -- ERROR
  DROP SERVER s3 CASCADE;
  \des
  \deu
  
  -- CREATE USER MAPPING
  CREATE USER MAPPING FOR regress_test_missing_role SERVER s1;  -- ERROR
  CREATE USER MAPPING FOR current_user SERVER s1;             -- ERROR
  CREATE USER MAPPING FOR current_user SERVER s4;
  CREATE USER MAPPING FOR user SERVER s4;                     -- ERROR duplicate
  CREATE USER MAPPING FOR public SERVER s4 OPTIONS ("this mapping" 'is public');
  CREATE USER MAPPING FOR user SERVER s8 OPTIONS (username 'test', password 'secret');    -- ERROR
  CREATE USER MAPPING FOR user SERVER s8 OPTIONS (user 'test', password 'secret');
  ALTER SERVER s5 OWNER TO regress_test_role;
  ALTER SERVER s6 OWNER TO regress_test_indirect;
  SET ROLE regress_test_role;
  CREATE USER MAPPING FOR current_user SERVER s5;
  CREATE USER MAPPING FOR current_user SERVER s6 OPTIONS (username 'test');
  CREATE USER MAPPING FOR current_user SERVER s7;             -- ERROR
  CREATE USER MAPPING FOR public SERVER s8;                   -- ERROR
  RESET ROLE;
  
  ALTER SERVER t1 OWNER TO regress_test_indirect;
  SET ROLE regress_test_role;
  CREATE USER MAPPING FOR current_user SERVER t1 OPTIONS (username 'bob', password 'boo');
  CREATE USER MAPPING FOR public SERVER t1;
  RESET ROLE;
  \deu
  
  -- ALTER USER MAPPING
  ALTER USER MAPPING FOR regress_test_missing_role SERVER s4 OPTIONS (gotcha 'true'); -- ERROR
  ALTER USER MAPPING FOR user SERVER ss4 OPTIONS (gotcha 'true'); -- ERROR
  ALTER USER MAPPING FOR public SERVER s5 OPTIONS (gotcha 'true');            -- ERROR
  ALTER USER MAPPING FOR current_user SERVER s8 OPTIONS (username 'test');    -- ERROR
  ALTER USER MAPPING FOR current_user SERVER s8 OPTIONS (DROP user, SET password 'public');
  SET ROLE regress_test_role;
  ALTER USER MAPPING FOR current_user SERVER s5 OPTIONS (ADD modified '1');
  ALTER USER MAPPING FOR public SERVER s4 OPTIONS (ADD modified '1'); -- ERROR
  ALTER USER MAPPING FOR public SERVER t1 OPTIONS (ADD modified '1');
  RESET ROLE;
  \deu+
  
  -- DROP USER MAPPING
  DROP USER MAPPING FOR regress_test_missing_role SERVER s4;  -- ERROR
  DROP USER MAPPING FOR user SERVER ss4;
  DROP USER MAPPING FOR public SERVER s7;                     -- ERROR
  DROP USER MAPPING IF EXISTS FOR regress_test_missing_role SERVER s4;
  DROP USER MAPPING IF EXISTS FOR user SERVER ss4;
  DROP USER MAPPING IF EXISTS FOR public SERVER s7;
  CREATE USER MAPPING FOR public SERVER s8;
  SET ROLE regress_test_role;
  DROP USER MAPPING FOR public SERVER s8;                     -- ERROR
  RESET ROLE;
  DROP SERVER s7;
  \deu
  
  -- CREATE FOREIGN TABLE
  CREATE SCHEMA foreign_schema;
  CREATE SERVER s0 FOREIGN DATA WRAPPER dummy;
  CREATE FOREIGN TABLE ft1 ();                                    -- ERROR
  CREATE FOREIGN TABLE ft1 () SERVER no_server;                   -- ERROR
  CREATE FOREIGN TABLE ft1 (c1 serial) SERVER sc;                 -- ERROR
  CREATE FOREIGN TABLE ft1 () SERVER s0 WITH OIDS;                -- ERROR
  CREATE FOREIGN TABLE ft1 (
  	c1 integer OPTIONS ("param 1" 'val1') NOT NULL,
  	c2 text OPTIONS (param2 'val2', param3 'val3'),
  	c3 date
  ) SERVER s0 OPTIONS (delimiter ',', quote '"', "be quoted" 'value');
  COMMENT ON FOREIGN TABLE ft1 IS 'ft1';
  COMMENT ON COLUMN ft1.c1 IS 'ft1.c1';
  \d+ ft1
  \det+
  CREATE INDEX id_ft1_c2 ON ft1 (c2);                             -- ERROR
  SELECT * FROM ft1;                                              -- ERROR
  EXPLAIN SELECT * FROM ft1;                                      -- ERROR
  
  -- ALTER FOREIGN TABLE
  COMMENT ON FOREIGN TABLE ft1 IS 'foreign table';
  COMMENT ON FOREIGN TABLE ft1 IS NULL;
  COMMENT ON COLUMN ft1.c1 IS 'foreign column';
  COMMENT ON COLUMN ft1.c1 IS NULL;
  
  ALTER FOREIGN TABLE ft1 ADD COLUMN c4 integer;
  ALTER FOREIGN TABLE ft1 ADD COLUMN c5 integer DEFAULT 0;        -- ERROR
  ALTER FOREIGN TABLE ft1 ADD COLUMN c6 integer;
  ALTER FOREIGN TABLE ft1 ADD COLUMN c7 integer NOT NULL;
  ALTER FOREIGN TABLE ft1 ADD COLUMN c8 integer;
  ALTER FOREIGN TABLE ft1 ADD COLUMN c9 integer;
  ALTER FOREIGN TABLE ft1 ADD COLUMN c10 integer OPTIONS (p1 'v1');
  
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c4 SET DEFAULT 0;          -- ERROR
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c5 DROP DEFAULT;           -- ERROR
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c6 SET NOT NULL;
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c7 DROP NOT NULL;
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE char(10) USING '0'; -- ERROR
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE char(10);
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 SET DATA TYPE text;
  ALTER FOREIGN TABLE ft1 ALTER COLUMN xmin OPTIONS (ADD p1 'v1'); -- ERROR
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c7 OPTIONS (ADD p1 'v1', ADD p2 'v2'),
                          ALTER COLUMN c8 OPTIONS (ADD p1 'v1', ADD p2 'v2');
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 OPTIONS (SET p2 'V2', DROP p1);
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c1 SET STATISTICS 10000;
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c1 SET (n_distinct = 100);
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 SET STATISTICS -1;
  \d+ ft1
  -- can't change the column type if it's used elsewhere
  CREATE TABLE use_ft1_column_type (x ft1);
  ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 SET DATA TYPE integer;	-- ERROR
  DROP TABLE use_ft1_column_type;
  ALTER FOREIGN TABLE ft1 ADD CONSTRAINT ft1_c9_check CHECK (c9 < 0); -- ERROR
  ALTER FOREIGN TABLE ft1 DROP CONSTRAINT no_const;               -- ERROR
  ALTER FOREIGN TABLE ft1 DROP CONSTRAINT IF EXISTS no_const;
  ALTER FOREIGN TABLE ft1 DROP CONSTRAINT ft1_c1_check;
  ALTER FOREIGN TABLE ft1 SET WITH OIDS;                          -- ERROR
  ALTER FOREIGN TABLE ft1 OWNER TO regress_test_role;
  ALTER FOREIGN TABLE ft1 OPTIONS (DROP delimiter, SET quote '~', ADD escape '@');
  ALTER FOREIGN TABLE ft1 DROP COLUMN no_column;                  -- ERROR
  ALTER FOREIGN TABLE ft1 DROP COLUMN IF EXISTS no_column;
  ALTER FOREIGN TABLE ft1 DROP COLUMN c9;
  ALTER FOREIGN TABLE ft1 SET SCHEMA foreign_schema;
  ALTER FOREIGN TABLE ft1 SET TABLESPACE ts;                      -- ERROR
  ALTER FOREIGN TABLE foreign_schema.ft1 RENAME c1 TO foreign_column_1;
  ALTER FOREIGN TABLE foreign_schema.ft1 RENAME TO foreign_table_1;
  \d foreign_schema.foreign_table_1
  
  -- alter noexisting table
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c4 integer;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c6 integer;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c7 integer NOT NULL;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c8 integer;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c9 integer;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c10 integer OPTIONS (p1 'v1');
  
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c6 SET NOT NULL;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c7 DROP NOT NULL;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c8 TYPE char(10);
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c8 SET DATA TYPE text;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c7 OPTIONS (ADD p1 'v1', ADD p2 'v2'),
                          ALTER COLUMN c8 OPTIONS (ADD p1 'v1', ADD p2 'v2');
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ALTER COLUMN c8 OPTIONS (SET p2 'V2', DROP p1);
  
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP CONSTRAINT IF EXISTS no_const;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP CONSTRAINT ft1_c1_check;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 OWNER TO regress_test_role;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 OPTIONS (DROP delimiter, SET quote '~', ADD escape '@');
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP COLUMN IF EXISTS no_column;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP COLUMN c9;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 SET SCHEMA foreign_schema;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 RENAME c1 TO foreign_column_1;
  ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 RENAME TO foreign_table_1;
  
  -- Information schema
  
  SELECT * FROM information_schema.foreign_data_wrappers ORDER BY 1, 2;
  SELECT * FROM information_schema.foreign_data_wrapper_options ORDER BY 1, 2, 3;
  SELECT * FROM information_schema.foreign_servers ORDER BY 1, 2;
  SELECT * FROM information_schema.foreign_server_options ORDER BY 1, 2, 3;
  SELECT * FROM information_schema.user_mappings ORDER BY lower(authorization_identifier), 2, 3;
  SELECT * FROM information_schema.user_mapping_options ORDER BY lower(authorization_identifier), 2, 3, 4;
  SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
  SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
  SELECT * FROM information_schema.foreign_tables ORDER BY 1, 2, 3;
  SELECT * FROM information_schema.foreign_table_options ORDER BY 1, 2, 3, 4;
  SET ROLE regress_test_role;
  SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;
  SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
  SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
  DROP USER MAPPING FOR current_user SERVER t1;
  SET ROLE regress_test_role2;
  SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;
  RESET ROLE;
  
  
  -- has_foreign_data_wrapper_privilege
  SELECT has_foreign_data_wrapper_privilege('regress_test_role',
      (SELECT oid FROM pg_foreign_data_wrapper WHERE fdwname='foo'), 'USAGE');
  SELECT has_foreign_data_wrapper_privilege('regress_test_role', 'foo', 'USAGE');
  SELECT has_foreign_data_wrapper_privilege(
      (SELECT oid FROM pg_roles WHERE rolname='regress_test_role'),
      (SELECT oid FROM pg_foreign_data_wrapper WHERE fdwname='foo'), 'USAGE');
  SELECT has_foreign_data_wrapper_privilege(
      (SELECT oid FROM pg_foreign_data_wrapper WHERE fdwname='foo'), 'USAGE');
  SELECT has_foreign_data_wrapper_privilege(
      (SELECT oid FROM pg_roles WHERE rolname='regress_test_role'), 'foo', 'USAGE');
  SELECT has_foreign_data_wrapper_privilege('foo', 'USAGE');
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_role;
  SELECT has_foreign_data_wrapper_privilege('regress_test_role', 'foo', 'USAGE');
  
  -- has_server_privilege
  SELECT has_server_privilege('regress_test_role',
      (SELECT oid FROM pg_foreign_server WHERE srvname='s8'), 'USAGE');
  SELECT has_server_privilege('regress_test_role', 's8', 'USAGE');
  SELECT has_server_privilege(
      (SELECT oid FROM pg_roles WHERE rolname='regress_test_role'),
      (SELECT oid FROM pg_foreign_server WHERE srvname='s8'), 'USAGE');
  SELECT has_server_privilege(
      (SELECT oid FROM pg_foreign_server WHERE srvname='s8'), 'USAGE');
  SELECT has_server_privilege(
      (SELECT oid FROM pg_roles WHERE rolname='regress_test_role'), 's8', 'USAGE');
  SELECT has_server_privilege('s8', 'USAGE');
  GRANT USAGE ON FOREIGN SERVER s8 TO regress_test_role;
  SELECT has_server_privilege('regress_test_role', 's8', 'USAGE');
  REVOKE USAGE ON FOREIGN SERVER s8 FROM regress_test_role;
  
  GRANT USAGE ON FOREIGN SERVER s4 TO regress_test_role;
  DROP USER MAPPING FOR public SERVER s4;
  ALTER SERVER s6 OPTIONS (DROP host, DROP dbname);
  ALTER USER MAPPING FOR regress_test_role SERVER s6 OPTIONS (DROP username);
  ALTER FOREIGN DATA WRAPPER foo VALIDATOR postgresql_fdw_validator;
  
  -- Privileges
  SET ROLE unprivileged_role;
  CREATE FOREIGN DATA WRAPPER foobar;                             -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (gotcha 'true');         -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OWNER TO unprivileged_role;      -- ERROR
  DROP FOREIGN DATA WRAPPER foo;                                  -- ERROR
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_role;   -- ERROR
  CREATE SERVER s9 FOREIGN DATA WRAPPER foo;                      -- ERROR
  ALTER SERVER s4 VERSION '0.5';                                  -- ERROR
  ALTER SERVER s4 OWNER TO unprivileged_role;                     -- ERROR
  DROP SERVER s4;                                                 -- ERROR
  GRANT USAGE ON FOREIGN SERVER s4 TO regress_test_role;          -- ERROR
  CREATE USER MAPPING FOR public SERVER s4;                       -- ERROR
  ALTER USER MAPPING FOR regress_test_role SERVER s6 OPTIONS (gotcha 'true'); -- ERROR
  DROP USER MAPPING FOR regress_test_role SERVER s6;              -- ERROR
  RESET ROLE;
  
  GRANT USAGE ON FOREIGN DATA WRAPPER postgresql TO unprivileged_role;
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO unprivileged_role WITH GRANT OPTION;
  SET ROLE unprivileged_role;
  CREATE FOREIGN DATA WRAPPER foobar;                             -- ERROR
  ALTER FOREIGN DATA WRAPPER foo OPTIONS (gotcha 'true');         -- ERROR
  DROP FOREIGN DATA WRAPPER foo;                                  -- ERROR
  GRANT USAGE ON FOREIGN DATA WRAPPER postgresql TO regress_test_role; -- WARNING
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_role;
  CREATE SERVER s9 FOREIGN DATA WRAPPER postgresql;
  ALTER SERVER s6 VERSION '0.5';                                  -- ERROR
  DROP SERVER s6;                                                 -- ERROR
  GRANT USAGE ON FOREIGN SERVER s6 TO regress_test_role;          -- ERROR
  GRANT USAGE ON FOREIGN SERVER s9 TO regress_test_role;
  CREATE USER MAPPING FOR public SERVER s6;                       -- ERROR
  CREATE USER MAPPING FOR public SERVER s9;
  ALTER USER MAPPING FOR regress_test_role SERVER s6 OPTIONS (gotcha 'true'); -- ERROR
  DROP USER MAPPING FOR regress_test_role SERVER s6;              -- ERROR
  RESET ROLE;
  
  REVOKE USAGE ON FOREIGN DATA WRAPPER foo FROM unprivileged_role; -- ERROR
  REVOKE USAGE ON FOREIGN DATA WRAPPER foo FROM unprivileged_role CASCADE;
  SET ROLE unprivileged_role;
  GRANT USAGE ON FOREIGN DATA WRAPPER foo TO regress_test_role;   -- ERROR
  CREATE SERVER s10 FOREIGN DATA WRAPPER foo;                     -- ERROR
  ALTER SERVER s9 VERSION '1.1';
  GRANT USAGE ON FOREIGN SERVER s9 TO regress_test_role;
  CREATE USER MAPPING FOR current_user SERVER s9;
  DROP SERVER s9 CASCADE;
  RESET ROLE;
  CREATE SERVER s9 FOREIGN DATA WRAPPER foo;
  GRANT USAGE ON FOREIGN SERVER s9 TO unprivileged_role;
  SET ROLE unprivileged_role;
  ALTER SERVER s9 VERSION '1.2';                                  -- ERROR
  GRANT USAGE ON FOREIGN SERVER s9 TO regress_test_role;          -- WARNING
  CREATE USER MAPPING FOR current_user SERVER s9;
  DROP SERVER s9 CASCADE;                                         -- ERROR
  RESET ROLE;
  
  -- DROP FOREIGN TABLE
  DROP FOREIGN TABLE no_table;                                    -- ERROR
  DROP FOREIGN TABLE IF EXISTS no_table;
  DROP FOREIGN TABLE foreign_schema.foreign_table_1;
  
  -- Cleanup
  DROP SCHEMA foreign_schema CASCADE;
  DROP ROLE regress_test_role;                                -- ERROR
  DROP SERVER s5 CASCADE;
  DROP SERVER t1 CASCADE;
  DROP SERVER t2;
  DROP USER MAPPING FOR regress_test_role SERVER s6;
  -- This test causes some order dependent cascade detail output,
  -- so switch to terse mode for it.
  \set VERBOSITY terse
  DROP FOREIGN DATA WRAPPER foo CASCADE;
  \set VERBOSITY default
  DROP SERVER s8 CASCADE;
  DROP ROLE regress_test_indirect;
  DROP ROLE regress_test_role;
  DROP ROLE unprivileged_role;                                -- ERROR
  REVOKE ALL ON FOREIGN DATA WRAPPER postgresql FROM unprivileged_role;
  DROP ROLE unprivileged_role;
  DROP ROLE regress_test_role2;
  DROP FOREIGN DATA WRAPPER postgresql CASCADE;
  DROP FOREIGN DATA WRAPPER dummy CASCADE;
  \c
  DROP ROLE foreign_data_user;
  
  -- At this point we should have no wrappers, no servers, and no mappings.
  SELECT fdwname, fdwhandler, fdwvalidator, fdwoptions FROM pg_foreign_data_wrapper;
  SELECT srvname, srvoptions FROM pg_foreign_server;
  SELECT * FROM pg_user_mapping;
  