diff options
Diffstat (limited to 'contrib/postgres_fdw/sql/postgres_fdw.sql')
| -rw-r--r-- | contrib/postgres_fdw/sql/postgres_fdw.sql | 213 |
1 files changed, 209 insertions, 4 deletions
diff --git a/contrib/postgres_fdw/sql/postgres_fdw.sql b/contrib/postgres_fdw/sql/postgres_fdw.sql index 1978e16cabc..b32e45a3680 100644 --- a/contrib/postgres_fdw/sql/postgres_fdw.sql +++ b/contrib/postgres_fdw/sql/postgres_fdw.sql @@ -11,12 +11,17 @@ DO $d$ OPTIONS (dbname '$$||current_database()||$$', port '$$||current_setting('port')||$$' )$$; + EXECUTE $$CREATE SERVER loopback2 FOREIGN DATA WRAPPER postgres_fdw + OPTIONS (dbname '$$||current_database()||$$', + port '$$||current_setting('port')||$$' + )$$; END; $d$; CREATE USER MAPPING FOR public SERVER testserver1 OPTIONS (user 'value', password 'value'); CREATE USER MAPPING FOR CURRENT_USER SERVER loopback; +CREATE USER MAPPING FOR CURRENT_USER SERVER loopback2; -- =================================================================== -- create objects used through FDW loopback server @@ -39,6 +44,18 @@ CREATE TABLE "S 1"."T 2" ( c2 text, CONSTRAINT t2_pkey PRIMARY KEY (c1) ); +CREATE TABLE "S 1"."T 3" ( + c1 int NOT NULL, + c2 int NOT NULL, + c3 text, + CONSTRAINT t3_pkey PRIMARY KEY (c1) +); +CREATE TABLE "S 1"."T 4" ( + c1 int NOT NULL, + c2 int NOT NULL, + c3 text, + CONSTRAINT t4_pkey PRIMARY KEY (c1) +); INSERT INTO "S 1"."T 1" SELECT id, @@ -54,9 +71,23 @@ INSERT INTO "S 1"."T 2" SELECT id, 'AAA' || to_char(id, 'FM000') FROM generate_series(1, 100) id; +INSERT INTO "S 1"."T 3" + SELECT id, + id + 1, + 'AAA' || to_char(id, 'FM000') + FROM generate_series(1, 100) id; +DELETE FROM "S 1"."T 3" WHERE c1 % 2 != 0; -- delete for outer join tests +INSERT INTO "S 1"."T 4" + SELECT id, + id + 1, + 'AAA' || to_char(id, 'FM000') + FROM generate_series(1, 100) id; +DELETE FROM "S 1"."T 4" WHERE c1 % 3 != 0; -- delete for outer join tests ANALYZE "S 1"."T 1"; ANALYZE "S 1"."T 2"; +ANALYZE "S 1"."T 3"; +ANALYZE "S 1"."T 4"; -- =================================================================== -- create foreign tables @@ -87,6 +118,24 @@ CREATE FOREIGN TABLE ft2 ( ) SERVER loopback; ALTER FOREIGN TABLE ft2 DROP COLUMN cx; +CREATE FOREIGN TABLE ft4 ( + c1 int NOT NULL, + c2 int NOT NULL, + c3 text +) SERVER loopback OPTIONS (schema_name 'S 1', table_name 'T 3'); + +CREATE FOREIGN TABLE ft5 ( + c1 int NOT NULL, + c2 int NOT NULL, + c3 text +) SERVER loopback OPTIONS (schema_name 'S 1', table_name 'T 4'); + +CREATE FOREIGN TABLE ft6 ( + c1 int NOT NULL, + c2 int NOT NULL, + c3 text +) SERVER loopback2 OPTIONS (schema_name 'S 1', table_name 'T 4'); + -- =================================================================== -- tests for validator -- =================================================================== @@ -168,8 +217,6 @@ EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE; SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE; -- aggregate SELECT COUNT(*) FROM ft1 t1; --- join two tables -SELECT t1.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; -- subquery SELECT * FROM ft1 t1 WHERE t1.c3 IN (SELECT c3 FROM ft2 t2 WHERE c1 <= 10) ORDER BY c1; -- subquery+MAX @@ -208,10 +255,11 @@ EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c1 = ANY(ARRAY[c2, 1, EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c1 = (ARRAY[c1,c2,3])[1]; -- ArrayRef EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c6 = E'foo''s\\bar'; -- check special chars EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c8 = 'foo'; -- can't be sent to remote --- parameterized remote path +-- parameterized remote path for foreign table EXPLAIN (VERBOSE, COSTS false) - SELECT * FROM ft2 a, ft2 b WHERE a.c1 = 47 AND b.c1 = a.c2; + SELECT * FROM "S 1"."T 1" a, ft2 b WHERE a."C 1" = 47 AND b.c1 = a.c2; SELECT * FROM ft2 a, ft2 b WHERE a.c1 = 47 AND b.c1 = a.c2; + -- check both safe and unsafe join conditions EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft2 a, ft2 b @@ -271,6 +319,158 @@ EXPLAIN (VERBOSE, COSTS false) SELECT count(c3) FROM ft1 t1 WHERE t1.c1 === t1.c2; -- =================================================================== +-- JOIN queries +-- =================================================================== +-- Analyze ft4 and ft5 so that we have better statistics. These tables do not +-- have use_remote_estimate set. +ANALYZE ft4; +ANALYZE ft5; + +-- join two tables +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +-- join three tables +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c2, t3.c3 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) JOIN ft4 t3 ON (t3.c1 = t1.c1) ORDER BY t1.c3, t1.c1 OFFSET 10 LIMIT 10; +SELECT t1.c1, t2.c2, t3.c3 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) JOIN ft4 t3 ON (t3.c1 = t1.c1) ORDER BY t1.c3, t1.c1 OFFSET 10 LIMIT 10; +-- left outer join +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; +-- left outer join + placement of clauses. +-- clauses within the nullable side are not pulled up, but top level clause on +-- non-nullable side is pushed into non-nullable side +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE c1 < 10) t2 ON (t1.c1 = t2.c1) WHERE t1.c1 < 10; +SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE c1 < 10) t2 ON (t1.c1 = t2.c1) WHERE t1.c1 < 10; +-- clauses within the nullable side are not pulled up, but the top level clause +-- on nullable side is not pushed down into nullable side +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE c1 < 10) t2 ON (t1.c1 = t2.c1) + WHERE (t2.c1 < 10 OR t2.c1 IS NULL) AND t1.c1 < 10; +SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE c1 < 10) t2 ON (t1.c1 = t2.c1) + WHERE (t2.c1 < 10 OR t2.c1 IS NULL) AND t1.c1 < 10; +-- right outer join +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2.c1, t1.c1 OFFSET 10 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2.c1, t1.c1 OFFSET 10 LIMIT 10; +-- full outer join +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 45 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 45 LIMIT 10; +-- full outer join + WHERE clause, only matched rows +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) WHERE (t1.c1 = t2.c1 OR t1.c1 IS NULL) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) WHERE (t1.c1 = t2.c1 OR t1.c1 IS NULL) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; +-- join two tables with FOR UPDATE clause +-- tests whole-row reference for row marks +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR UPDATE OF t1; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR UPDATE OF t1; +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR UPDATE; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR UPDATE; +-- join two tables with FOR SHARE clause +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR SHARE OF t1; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR SHARE OF t1; +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR SHARE; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10 FOR SHARE; +-- join in CTE +EXPLAIN (COSTS false, VERBOSE) +WITH t (c1_1, c1_3, c2_1) AS (SELECT t1.c1, t1.c3, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1)) SELECT c1_1, c2_1 FROM t ORDER BY c1_3, c1_1 OFFSET 100 LIMIT 10; +WITH t (c1_1, c1_3, c2_1) AS (SELECT t1.c1, t1.c3, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1)) SELECT c1_1, c2_1 FROM t ORDER BY c1_3, c1_1 OFFSET 100 LIMIT 10; +-- ctid with whole-row reference +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.ctid, t1, t2, t1.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.ctid, t1, t2, t1.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +-- SEMI JOIN, not pushed down +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1 FROM ft1 t1 WHERE EXISTS (SELECT 1 FROM ft2 t2 WHERE t1.c1 = t2.c1) ORDER BY t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1 FROM ft1 t1 WHERE EXISTS (SELECT 1 FROM ft2 t2 WHERE t1.c1 = t2.c1) ORDER BY t1.c1 OFFSET 100 LIMIT 10; +-- ANTI JOIN, not pushed down +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1 FROM ft1 t1 WHERE NOT EXISTS (SELECT 1 FROM ft2 t2 WHERE t1.c1 = t2.c2) ORDER BY t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1 FROM ft1 t1 WHERE NOT EXISTS (SELECT 1 FROM ft2 t2 WHERE t1.c1 = t2.c2) ORDER BY t1.c1 OFFSET 100 LIMIT 10; +-- CROSS JOIN, not pushed down +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 CROSS JOIN ft2 t2 ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft1 t1 CROSS JOIN ft2 t2 ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +-- different server, not pushed down. No result expected. +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft5 t1 JOIN ft6 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft5 t1 JOIN ft6 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +-- unsafe join conditions (c8 has a UDT), not pushed down. Practically a CROSS +-- JOIN since c8 in both tables has same value. +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 LEFT JOIN ft2 t2 ON (t1.c8 = t2.c8) ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft1 t1 LEFT JOIN ft2 t2 ON (t1.c8 = t2.c8) ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +-- unsafe conditions on one side (c8 has a UDT), not pushed down. +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) WHERE t1.c8 = 'foo' ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft1 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) WHERE t1.c8 = 'foo' ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +-- join where unsafe to pushdown condition in WHERE clause has a column not +-- in the SELECT clause. In this test unsafe clause needs to have column +-- references from both joining sides so that the clause is not pushed down +-- into one of the joining sides. +EXPLAIN (COSTS false, VERBOSE) +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) WHERE t1.c8 = t2.c8 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) WHERE t1.c8 = t2.c8 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10; +-- Aggregate after UNION, for testing setrefs +EXPLAIN (COSTS false, VERBOSE) +SELECT t1c1, avg(t1c1 + t2c1) FROM (SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) UNION SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1)) AS t (t1c1, t2c1) GROUP BY t1c1 ORDER BY t1c1 OFFSET 100 LIMIT 10; +SELECT t1c1, avg(t1c1 + t2c1) FROM (SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) UNION SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1)) AS t (t1c1, t2c1) GROUP BY t1c1 ORDER BY t1c1 OFFSET 100 LIMIT 10; +-- join with lateral reference +EXPLAIN (COSTS false, VERBOSE) +SELECT t1."C 1" FROM "S 1"."T 1" t1, LATERAL (SELECT DISTINCT t2.c1, t3.c1 FROM ft1 t2, ft2 t3 WHERE t2.c1 = t3.c1 AND t2.c2 = t1.c2) q ORDER BY t1."C 1" OFFSET 10 LIMIT 10; +SELECT t1."C 1" FROM "S 1"."T 1" t1, LATERAL (SELECT DISTINCT t2.c1, t3.c1 FROM ft1 t2, ft2 t3 WHERE t2.c1 = t3.c1 AND t2.c2 = t1.c2) q ORDER BY t1."C 1" OFFSET 10 LIMIT 10; + +-- create another user for permission, user mapping, effective user tests +CREATE USER view_owner; +-- grant privileges on ft4 and ft5 to view_owner +GRANT ALL ON ft4 TO view_owner; +GRANT ALL ON ft5 TO view_owner; +-- prepare statement with current session user +PREPARE join_stmt AS SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; +EXPLAIN (COSTS OFF, VERBOSE) EXECUTE join_stmt; +EXECUTE join_stmt; +-- change the session user to view_owner and execute the statement. Because of +-- change in session user, the plan should get invalidated and created again. +-- While creating the plan, it should throw error since there is no user mapping +-- available for view_owner. +SET SESSION ROLE view_owner; +EXPLAIN (COSTS OFF, VERBOSE) EXECUTE join_stmt; +EXECUTE join_stmt; +RESET ROLE; +DEALLOCATE join_stmt; + +CREATE VIEW v_ft5 AS SELECT * FROM ft5; +-- change owner of v_ft5 to view_owner so that the effective user for scan on +-- ft5 is view_owner and not the current user. +ALTER VIEW v_ft5 OWNER TO view_owner; +-- create a public user mapping for loopback server +-- drop user mapping for current_user. +DROP USER MAPPING FOR CURRENT_USER SERVER loopback; +CREATE USER MAPPING FOR PUBLIC SERVER loopback; +-- different effective user for permission check, but same user mapping for the +-- joining sides, join pushed down, no result expected. +PREPARE join_stmt AS SELECT t1.c1, t2.c1 FROM ft5 t1 JOIN v_ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10; +EXPLAIN (COSTS false, VERBOSE) EXECUTE join_stmt; +EXECUTE join_stmt; +-- create user mapping for view_owner and execute the prepared statement +-- the join should not be pushed down since joining relations now use two +-- different user mappings +CREATE USER MAPPING FOR view_owner SERVER loopback; +EXPLAIN (COSTS false, VERBOSE) EXECUTE join_stmt; +EXECUTE join_stmt; + +-- recreate the dropped user mapping for further tests +CREATE USER MAPPING FOR CURRENT_USER SERVER loopback; +DROP USER MAPPING FOR PUBLIC SERVER loopback; + +-- =================================================================== -- parameterized queries -- =================================================================== -- simple join @@ -348,6 +548,7 @@ DROP FUNCTION f_test(int); -- =================================================================== ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE int; SELECT * FROM ft1 WHERE c1 = 1; -- ERROR +SELECT ft1.c1, ft2.c2, ft1.c8 FROM ft1, ft2 WHERE ft1.c1 = ft2.c1 AND ft1.c1 = 1; -- ERROR ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE user_enum; -- =================================================================== @@ -973,3 +1174,7 @@ WHERE ftrelid = 'table30000'::regclass AND ftoptions @> array['fetch_size=60000']; ROLLBACK; + +-- Cleanup +DROP OWNED BY view_owner; +DROP USER view_owner; |