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postgres_fdw: Perform the (FINAL, NULL) upperrel operations remotely.
The upper-planner pathification allows FDWs to arrange to push down different types of upper-stage operations to the remote side. This commit teaches postgres_fdw to do it for the (FINAL, NULL) upperrel, which is responsible for doing LockRows, LIMIT, and/or ModifyTable. This provides the ability for postgres_fdw to handle SELECT commands so that it 1) skips the LockRows step (if any) (note that this is safe since it performs early locking) and 2) pushes down the LIMIT and/or OFFSET restrictions (if any) to the remote side. This doesn't handle the INSERT/UPDATE/DELETE cases. Author: Etsuro Fujita Reviewed-By: Antonin Houska and Jeff Janes Discussion: https://postgr.es/m/87pnz1aby9.fsf@news-spur.riddles.org.uk
This commit is contained in:
Etsuro Fujita
@ -236,11 +236,10 @@ ALTER FOREIGN TABLE ft2 OPTIONS (use_remote_estimate 'true');
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-- ===================================================================
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-- single table without alias
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EXPLAIN (COSTS OFF) SELECT * FROM ft1 ORDER BY c3, c1 OFFSET 100 LIMIT 10;
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QUERY PLAN
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---------------------------
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Limit
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-> Foreign Scan on ft1
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(2 rows)
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QUERY PLAN
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---------------------
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Foreign Scan on ft1
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(1 row)
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SELECT * FROM ft1 ORDER BY c3, c1 OFFSET 100 LIMIT 10;
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c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
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@ -288,14 +287,12 @@ SELECT * FROM ft1 t1 ORDER BY t1.c3, t1.c1, t1.tableoid OFFSET 100 LIMIT 10;
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-- whole-row reference
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EXPLAIN (VERBOSE, COSTS OFF) SELECT t1 FROM ft1 t1 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10;
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan on public.ft1 t1
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Output: t1.*, c3, c1
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-> Foreign Scan on public.ft1 t1
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Output: t1.*, c3, c1
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c3 ASC NULLS LAST, "C 1" ASC NULLS LAST
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(5 rows)
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c3 ASC NULLS LAST, "C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint
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(3 rows)
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SELECT t1 FROM ft1 t1 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10;
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t1
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@ -335,14 +332,12 @@ SELECT * FROM ft1 t1 WHERE t1.c1 = 101 AND t1.c6 = '1' AND t1.c7 >= '1';
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-- with FOR UPDATE/SHARE
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EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 = 101 FOR UPDATE;
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QUERY PLAN
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----------------------------------------------------------------------------------------------------------------
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LockRows
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QUERY PLAN
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----------------------------------------------------------------------------------------------------------
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Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.*
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-> Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.*
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 101)) FOR UPDATE
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(5 rows)
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 101)) FOR UPDATE
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(3 rows)
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SELECT * FROM ft1 t1 WHERE c1 = 101 FOR UPDATE;
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c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
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@ -351,14 +346,12 @@ SELECT * FROM ft1 t1 WHERE c1 = 101 FOR UPDATE;
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(1 row)
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EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE;
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QUERY PLAN
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---------------------------------------------------------------------------------------------------------------
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LockRows
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QUERY PLAN
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---------------------------------------------------------------------------------------------------------
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Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.*
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-> Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.*
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 102)) FOR SHARE
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(5 rows)
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 102)) FOR SHARE
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(3 rows)
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SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE;
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c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
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@ -968,6 +961,25 @@ SELECT count(c3) FROM ft1 t1 WHERE t1.c1 === t1.c2;
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9
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(1 row)
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-- ORDER BY can be shipped, though
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT * FROM ft1 t1 WHERE t1.c1 === t1.c2 order by t1.c2 limit 1;
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QUERY PLAN
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----------------------------------------------------------------------------------------------------------
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Limit
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Output: c1, c2, c3, c4, c5, c6, c7, c8
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-> Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8
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Filter: (t1.c1 === t1.c2)
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c2 ASC NULLS LAST
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(6 rows)
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SELECT * FROM ft1 t1 WHERE t1.c1 === t1.c2 order by t1.c2 limit 1;
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c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
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----+----+-------+------------------------------+--------------------------+----+------------+-----
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1 | 1 | 00001 | Fri Jan 02 00:00:00 1970 PST | Fri Jan 02 00:00:00 1970 | 1 | 1 | foo
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(1 row)
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-- but let's put them in an extension ...
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ALTER EXTENSION postgres_fdw ADD FUNCTION postgres_fdw_abs(int);
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ALTER EXTENSION postgres_fdw ADD OPERATOR === (int, int);
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@ -1005,6 +1017,22 @@ SELECT count(c3) FROM ft1 t1 WHERE t1.c1 === t1.c2;
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9
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(1 row)
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-- and both ORDER BY and LIMIT can be shipped
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT * FROM ft1 t1 WHERE t1.c1 === t1.c2 order by t1.c2 limit 1;
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan on public.ft1 t1
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Output: c1, c2, c3, c4, c5, c6, c7, c8
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Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" OPERATOR(public.===) c2)) ORDER BY c2 ASC NULLS LAST LIMIT 1::bigint
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(3 rows)
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SELECT * FROM ft1 t1 WHERE t1.c1 === t1.c2 order by t1.c2 limit 1;
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c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
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----+----+-------+------------------------------+--------------------------+----+------------+-----
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1 | 1 | 00001 | Fri Jan 02 00:00:00 1970 PST | Fri Jan 02 00:00:00 1970 | 1 | 1 | foo
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(1 row)
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-- ===================================================================
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-- JOIN queries
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-- ===================================================================
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@ -1015,15 +1043,13 @@ ANALYZE ft5;
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-- join two tables
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EXPLAIN (VERBOSE, COSTS OFF)
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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;
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c1, t1.c3
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-> Foreign Scan
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Output: t1.c1, t2.c1, t1.c3
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Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
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Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST
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(6 rows)
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Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
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Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint
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(4 rows)
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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;
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c1 | c1
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@ -1043,18 +1069,13 @@ SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t
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-- join three tables
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EXPLAIN (VERBOSE, COSTS OFF)
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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;
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QUERY PLAN
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---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c2, t3.c3, t1.c3
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-> Sort
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Output: t1.c1, t2.c2, t3.c3, t1.c3
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Sort Key: t1.c3, t1.c1
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-> Foreign Scan
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Output: t1.c1, t2.c2, t3.c3, t1.c3
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Relations: ((public.ft1 t1) INNER JOIN (public.ft2 t2)) INNER JOIN (public.ft4 t3)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3, r1.c3 FROM (("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) INNER JOIN "S 1"."T 3" r4 ON (((r1."C 1" = r4.c1))))
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(9 rows)
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Relations: ((public.ft1 t1) INNER JOIN (public.ft2 t2)) INNER JOIN (public.ft4 t3)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3, r1.c3 FROM (("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) INNER JOIN "S 1"."T 3" r4 ON (((r1."C 1" = r4.c1)))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 10::bigint
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(4 rows)
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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;
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c1 | c2 | c3
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@ -1074,15 +1095,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) JOIN ft4 t
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-- left outer join
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EXPLAIN (VERBOSE, COSTS OFF)
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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;
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QUERY PLAN
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c1
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-> Foreign Scan
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Output: t1.c1, t2.c1
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Relations: (public.ft4 t1) LEFT JOIN (public.ft5 t2)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r1 LEFT JOIN "S 1"."T 4" r2 ON (((r1.c1 = r2.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST
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(6 rows)
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Relations: (public.ft4 t1) LEFT JOIN (public.ft5 t2)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r1 LEFT JOIN "S 1"."T 4" r2 ON (((r1.c1 = r2.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST LIMIT 10::bigint OFFSET 10::bigint
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(4 rows)
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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;
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c1 | c1
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@ -1102,15 +1121,13 @@ SELECT t1.c1, t2.c1 FROM ft4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.
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-- left outer join three tables
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c2, t3.c3
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-> Foreign Scan
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Output: t1.c1, t2.c2, t3.c3
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Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
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(6 rows)
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Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
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(4 rows)
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SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
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c1 | c2 | c3
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@ -1175,15 +1192,13 @@ SELECT t1.c1, t1.c2, t2.c1, t2.c2 FROM ft4 t1 LEFT JOIN (SELECT * FROM ft5 WHERE
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-- right outer join
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EXPLAIN (VERBOSE, COSTS OFF)
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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;
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QUERY PLAN
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c1
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-> Foreign Scan
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Output: t1.c1, t2.c1
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Relations: (public.ft4 t2) LEFT JOIN (public.ft5 t1)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r2 LEFT JOIN "S 1"."T 4" r1 ON (((r1.c1 = r2.c1)))) ORDER BY r2.c1 ASC NULLS LAST, r1.c1 ASC NULLS LAST
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(6 rows)
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Relations: (public.ft4 t2) LEFT JOIN (public.ft5 t1)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r2 LEFT JOIN "S 1"."T 4" r1 ON (((r1.c1 = r2.c1)))) ORDER BY r2.c1 ASC NULLS LAST, r1.c1 ASC NULLS LAST LIMIT 10::bigint OFFSET 10::bigint
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(4 rows)
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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;
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c1 | c1
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@ -1203,15 +1218,13 @@ SELECT t1.c1, t2.c1 FROM ft5 t1 RIGHT JOIN ft4 t2 ON (t1.c1 = t2.c1) ORDER BY t2
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-- right outer join three tables
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
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QUERY PLAN
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c2, t3.c3
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-> Foreign Scan
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Output: t1.c1, t2.c2, t3.c3
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Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1"))))
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(6 rows)
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Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
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Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) LIMIT 10::bigint OFFSET 10::bigint
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(4 rows)
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SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
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c1 | c2 | c3
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@ -1231,15 +1244,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGH
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-- full outer join
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EXPLAIN (VERBOSE, COSTS OFF)
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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;
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QUERY PLAN
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: t1.c1, t2.c1
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-> Foreign Scan
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Output: t1.c1, t2.c1
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Relations: (public.ft4 t1) FULL JOIN (public.ft5 t2)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r1 FULL JOIN "S 1"."T 4" r2 ON (((r1.c1 = r2.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST
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(6 rows)
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Relations: (public.ft4 t1) FULL JOIN (public.ft5 t2)
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Remote SQL: SELECT r1.c1, r2.c1 FROM ("S 1"."T 3" r1 FULL JOIN "S 1"."T 4" r2 ON (((r1.c1 = r2.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST LIMIT 10::bigint OFFSET 45::bigint
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(4 rows)
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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;
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c1 | c1
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@ -1283,15 +1294,13 @@ SELECT t1.c1, t2.c1 FROM (SELECT c1 FROM ft4 WHERE c1 between 50 and 60) t1 FULL
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||||
EXPLAIN (VERBOSE, COSTS OFF)
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||||
SELECT 1 FROM (SELECT c1 FROM ft4 WHERE c1 between 50 and 60) t1 FULL JOIN (SELECT c1 FROM ft5 WHERE c1 between 50 and 60) t2 ON (TRUE) OFFSET 10 LIMIT 10;
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Limit
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QUERY PLAN
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Foreign Scan
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Output: 1
|
||||
-> Foreign Scan
|
||||
Output: 1
|
||||
Relations: (public.ft4) FULL JOIN (public.ft5)
|
||||
Remote SQL: SELECT NULL FROM ((SELECT NULL FROM "S 1"."T 3" WHERE ((c1 >= 50)) AND ((c1 <= 60))) s4 FULL JOIN (SELECT NULL FROM "S 1"."T 4" WHERE ((c1 >= 50)) AND ((c1 <= 60))) s5 ON (TRUE))
|
||||
(6 rows)
|
||||
Relations: (public.ft4) FULL JOIN (public.ft5)
|
||||
Remote SQL: SELECT NULL FROM ((SELECT NULL FROM "S 1"."T 3" WHERE ((c1 >= 50)) AND ((c1 <= 60))) s4 FULL JOIN (SELECT NULL FROM "S 1"."T 4" WHERE ((c1 >= 50)) AND ((c1 <= 60))) s5 ON (TRUE)) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT 1 FROM (SELECT c1 FROM ft4 WHERE c1 between 50 and 60) t1 FULL JOIN (SELECT c1 FROM ft5 WHERE c1 between 50 and 60) t2 ON (TRUE) OFFSET 10 LIMIT 10;
|
||||
?column?
|
||||
@ -1406,15 +1415,13 @@ SELECT t1.c1, ss.a, ss.b FROM (SELECT c1 FROM "S 1"."T 3" WHERE c1 = 50) t1 INNE
|
||||
-- full outer join + inner join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c1, t3.c1 FROM ft4 t1 INNER JOIN ft5 t2 ON (t1.c1 = t2.c1 + 1 and t1.c1 between 50 and 60) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) ORDER BY t1.c1, t2.c1, t3.c1 LIMIT 10;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1, t3.c1
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c1, t3.c1
|
||||
Relations: ((public.ft4 t1) INNER JOIN (public.ft5 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1.c1, r2.c1, r4.c1 FROM (("S 1"."T 3" r1 INNER JOIN "S 1"."T 4" r2 ON (((r1.c1 = (r2.c1 + 1))) AND ((r1.c1 >= 50)) AND ((r1.c1 <= 60)))) FULL JOIN "S 1"."T 3" r4 ON (((r2.c1 = r4.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST, r4.c1 ASC NULLS LAST
|
||||
(6 rows)
|
||||
Relations: ((public.ft4 t1) INNER JOIN (public.ft5 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1.c1, r2.c1, r4.c1 FROM (("S 1"."T 3" r1 INNER JOIN "S 1"."T 4" r2 ON (((r1.c1 = (r2.c1 + 1))) AND ((r1.c1 >= 50)) AND ((r1.c1 <= 60)))) FULL JOIN "S 1"."T 3" r4 ON (((r2.c1 = r4.c1)))) ORDER BY r1.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST, r4.c1 ASC NULLS LAST LIMIT 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c1, t3.c1 FROM ft4 t1 INNER JOIN ft5 t2 ON (t1.c1 = t2.c1 + 1 and t1.c1 between 50 and 60) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) ORDER BY t1.c1, t2.c1, t3.c1 LIMIT 10;
|
||||
c1 | c1 | c1
|
||||
@ -1434,15 +1441,13 @@ SELECT t1.c1, t2.c1, t3.c1 FROM ft4 t1 INNER JOIN ft5 t2 ON (t1.c1 = t2.c1 + 1 a
|
||||
-- full outer join three tables
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1462,15 +1467,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL
|
||||
-- full outer join + right outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1"))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft4 t3) LEFT JOIN (public.ft2 t2)) LEFT JOIN (public.ft2 t1)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 3" r4 LEFT JOIN "S 1"."T 1" r2 ON (((r2."C 1" = r4.c1)))) LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1490,15 +1493,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT
|
||||
-- right outer join + full outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1518,15 +1519,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL
|
||||
-- full outer join + left outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft2 t1) FULL JOIN (public.ft2 t2)) LEFT JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1546,15 +1545,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT
|
||||
-- left outer join + full outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft2 t1) LEFT JOIN (public.ft2 t2)) FULL JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r1 LEFT JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) FULL JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1574,15 +1571,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL
|
||||
-- right outer join + left outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) LEFT JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: ((public.ft2 t2) LEFT JOIN (public.ft2 t1)) LEFT JOIN (public.ft4 t3)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM (("S 1"."T 1" r2 LEFT JOIN "S 1"."T 1" r1 ON (((r1."C 1" = r2."C 1")))) LEFT JOIN "S 1"."T 3" r4 ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1602,15 +1597,13 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT
|
||||
-- left outer join + right outer join
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t3.c3
|
||||
Relations: (public.ft4 t3) LEFT JOIN ((public.ft2 t1) INNER JOIN (public.ft2 t2))
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM ("S 1"."T 3" r4 LEFT JOIN ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ON (((r2."C 1" = r4.c1))))
|
||||
(6 rows)
|
||||
Relations: (public.ft4 t3) LEFT JOIN ((public.ft2 t1) INNER JOIN (public.ft2 t2))
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r4.c3 FROM ("S 1"."T 3" r4 LEFT JOIN ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ON (((r2."C 1" = r4.c1)))) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
|
||||
c1 | c2 | c3
|
||||
@ -1661,15 +1654,13 @@ SELECT t1.c1, t2.c1 FROM ft4 t1 FULL JOIN ft5 t2 ON (t1.c1 = t2.c1) WHERE (t1.c1
|
||||
-- full outer join + WHERE clause with shippable extensions set
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2, t1.c3 FROM ft1 t1 FULL JOIN ft2 t2 ON (t1.c1 = t2.c1) WHERE postgres_fdw_abs(t1.c1) > 0 OFFSET 10 LIMIT 10;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c2, t1.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c2, t1.c3
|
||||
Relations: (public.ft1 t1) FULL JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r1.c3 FROM ("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) WHERE ((public.postgres_fdw_abs(r1."C 1") > 0))
|
||||
(6 rows)
|
||||
Relations: (public.ft1 t1) FULL JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2.c2, r1.c3 FROM ("S 1"."T 1" r1 FULL JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) WHERE ((public.postgres_fdw_abs(r1."C 1") > 0)) LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
ALTER SERVER loopback OPTIONS (DROP extensions);
|
||||
-- full outer join + WHERE clause with shippable extensions not set
|
||||
@ -1691,37 +1682,13 @@ ALTER SERVER loopback OPTIONS (ADD extensions 'postgres_fdw');
|
||||
-- tests whole-row reference for row marks
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
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;
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> LockRows
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST FOR UPDATE OF r1
|
||||
-> Result
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Sort Key: t1.c3, t1.c1
|
||||
-> Merge Join
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Merge Cond: (t1.c1 = t2.c1)
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Sort Key: t1.c1
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR UPDATE
|
||||
-> Sort
|
||||
Output: t2.c1, t2.*
|
||||
Sort Key: t2.c1
|
||||
-> Foreign Scan on public.ft2 t2
|
||||
Output: t2.c1, t2.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1"
|
||||
(28 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint FOR UPDATE OF r1
|
||||
(4 rows)
|
||||
|
||||
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;
|
||||
c1 | c1
|
||||
@ -1740,37 +1707,13 @@ SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t
|
||||
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
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;
|
||||
QUERY PLAN
|
||||
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> LockRows
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST FOR UPDATE OF r1 FOR UPDATE OF r2
|
||||
-> Result
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Sort Key: t1.c3, t1.c1
|
||||
-> Merge Join
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Merge Cond: (t1.c1 = t2.c1)
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Sort Key: t1.c1
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR UPDATE
|
||||
-> Sort
|
||||
Output: t2.c1, t2.*
|
||||
Sort Key: t2.c1
|
||||
-> Foreign Scan on public.ft2 t2
|
||||
Output: t2.c1, t2.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR UPDATE
|
||||
(28 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint FOR UPDATE OF r1 FOR UPDATE OF r2
|
||||
(4 rows)
|
||||
|
||||
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;
|
||||
c1 | c1
|
||||
@ -1790,37 +1733,13 @@ SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t
|
||||
-- join two tables with FOR SHARE clause
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
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;
|
||||
QUERY PLAN
|
||||
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> LockRows
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST FOR SHARE OF r1
|
||||
-> Result
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Sort Key: t1.c3, t1.c1
|
||||
-> Merge Join
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Merge Cond: (t1.c1 = t2.c1)
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Sort Key: t1.c1
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR SHARE
|
||||
-> Sort
|
||||
Output: t2.c1, t2.*
|
||||
Sort Key: t2.c1
|
||||
-> Foreign Scan on public.ft2 t2
|
||||
Output: t2.c1, t2.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1"
|
||||
(28 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint FOR SHARE OF r1
|
||||
(4 rows)
|
||||
|
||||
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;
|
||||
c1 | c1
|
||||
@ -1839,37 +1758,13 @@ SELECT t1.c1, t2.c1 FROM ft1 t1 JOIN ft2 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c3, t
|
||||
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
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;
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> LockRows
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Foreign Scan
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST FOR SHARE OF r1 FOR SHARE OF r2
|
||||
-> Result
|
||||
Output: t1.c1, t2.c1, t1.c3, t1.*, t2.*
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Sort Key: t1.c3, t1.c1
|
||||
-> Merge Join
|
||||
Output: t1.c1, t1.c3, t1.*, t2.c1, t2.*
|
||||
Merge Cond: (t1.c1 = t2.c1)
|
||||
-> Sort
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Sort Key: t1.c1
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: t1.c1, t1.c3, t1.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR SHARE
|
||||
-> Sort
|
||||
Output: t2.c1, t2.*
|
||||
Sort Key: t2.c1
|
||||
-> Foreign Scan on public.ft2 t2
|
||||
Output: t2.c1, t2.*
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" FOR SHARE
|
||||
(28 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1", r1.c3, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint FOR SHARE OF r1 FOR SHARE OF r2
|
||||
(4 rows)
|
||||
|
||||
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;
|
||||
c1 | c1
|
||||
@ -1923,15 +1818,13 @@ WITH t (c1_1, c1_3, c2_1) AS MATERIALIZED (SELECT t1.c1, t1.c3, t2.c1 FROM ft1 t
|
||||
-- ctid with whole-row reference
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
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;
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.ctid, t1.*, t2.*, t1.c1, t1.c3
|
||||
-> Foreign Scan
|
||||
Output: t1.ctid, t1.*, t2.*, t1.c1, t1.c3
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1.ctid, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END, r1."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST
|
||||
(6 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1.ctid, CASE WHEN (r1.*)::text IS NOT NULL THEN ROW(r1."C 1", r1.c2, r1.c3, r1.c4, r1.c5, r1.c6, r1.c7, r1.c8) END, CASE WHEN (r2.*)::text IS NOT NULL THEN ROW(r2."C 1", r2.c2, r2.c3, r2.c4, r2.c5, r2.c6, r2.c7, r2.c8) END, r1."C 1", r1.c3 FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (((r1."C 1" = r2."C 1")))) ORDER BY r1.c3 ASC NULLS LAST, r1."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint
|
||||
(4 rows)
|
||||
|
||||
-- SEMI JOIN, not pushed down
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
@ -1999,27 +1892,16 @@ SELECT t1.c1 FROM ft1 t1 WHERE NOT EXISTS (SELECT 1 FROM ft2 t2 WHERE t1.c1 = t2
|
||||
119
|
||||
(10 rows)
|
||||
|
||||
-- CROSS JOIN, not pushed down
|
||||
-- CROSS JOIN can be pushed down
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c1 FROM ft1 t1 CROSS JOIN ft2 t2 ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10;
|
||||
QUERY PLAN
|
||||
---------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: t1.c1, t2.c1
|
||||
-> Sort
|
||||
Output: t1.c1, t2.c1
|
||||
Sort Key: t1.c1, t2.c1
|
||||
-> Nested Loop
|
||||
Output: t1.c1, t2.c1
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: t1.c1
|
||||
Remote SQL: SELECT "C 1" FROM "S 1"."T 1"
|
||||
-> Materialize
|
||||
Output: t2.c1
|
||||
-> Foreign Scan on public.ft2 t2
|
||||
Output: t2.c1
|
||||
Remote SQL: SELECT "C 1" FROM "S 1"."T 1"
|
||||
(15 rows)
|
||||
Relations: (public.ft1 t1) INNER JOIN (public.ft2 t2)
|
||||
Remote SQL: SELECT r1."C 1", r2."C 1" FROM ("S 1"."T 1" r1 INNER JOIN "S 1"."T 1" r2 ON (TRUE)) ORDER BY r1."C 1" ASC NULLS LAST, r2."C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 100::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c1 FROM ft1 t1 CROSS JOIN ft2 t2 ORDER BY t1.c1, t2.c1 OFFSET 100 LIMIT 10;
|
||||
c1 | c1
|
||||
@ -2462,15 +2344,13 @@ SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN v5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1
|
||||
ALTER VIEW v4 OWNER TO regress_view_owner;
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN v5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; -- can be pushed down
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: ft4.c1, ft5.c2, ft5.c1
|
||||
-> Foreign Scan
|
||||
Output: ft4.c1, ft5.c2, ft5.c1
|
||||
Relations: (public.ft4) LEFT JOIN (public.ft5)
|
||||
Remote SQL: SELECT r6.c1, r9.c2, r9.c1 FROM ("S 1"."T 3" r6 LEFT JOIN "S 1"."T 4" r9 ON (((r6.c1 = r9.c1)))) ORDER BY r6.c1 ASC NULLS LAST, r9.c1 ASC NULLS LAST
|
||||
(6 rows)
|
||||
Relations: (public.ft4) LEFT JOIN (public.ft5)
|
||||
Remote SQL: SELECT r6.c1, r9.c2, r9.c1 FROM ("S 1"."T 3" r6 LEFT JOIN "S 1"."T 4" r9 ON (((r6.c1 = r9.c1)))) ORDER BY r6.c1 ASC NULLS LAST, r9.c1 ASC NULLS LAST LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN v5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;
|
||||
c1 | c2
|
||||
@ -2527,15 +2407,13 @@ SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c
|
||||
ALTER VIEW v4 OWNER TO CURRENT_USER;
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10; -- can be pushed down
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: ft4.c1, t2.c2, t2.c1
|
||||
-> Foreign Scan
|
||||
Output: ft4.c1, t2.c2, t2.c1
|
||||
Relations: (public.ft4) LEFT JOIN (public.ft5 t2)
|
||||
Remote SQL: SELECT r6.c1, r2.c2, r2.c1 FROM ("S 1"."T 3" r6 LEFT JOIN "S 1"."T 4" r2 ON (((r6.c1 = r2.c1)))) ORDER BY r6.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST
|
||||
(6 rows)
|
||||
Relations: (public.ft4) LEFT JOIN (public.ft5 t2)
|
||||
Remote SQL: SELECT r6.c1, r2.c2, r2.c1 FROM ("S 1"."T 3" r6 LEFT JOIN "S 1"."T 4" r2 ON (((r6.c1 = r2.c1)))) ORDER BY r6.c1 ASC NULLS LAST, r2.c1 ASC NULLS LAST LIMIT 10::bigint OFFSET 10::bigint
|
||||
(4 rows)
|
||||
|
||||
SELECT t1.c1, t2.c2 FROM v4 t1 LEFT JOIN ft5 t2 ON (t1.c1 = t2.c1) ORDER BY t1.c1, t2.c1 OFFSET 10 LIMIT 10;
|
||||
c1 | c2
|
||||
@ -2580,6 +2458,22 @@ select count(c6), sum(c1), avg(c1), min(c2), max(c1), stddev(c2), sum(c1) * (ran
|
||||
100 | 50500 | 505.0000000000000000 | 0 | 1000 | 0 | 50500
|
||||
(5 rows)
|
||||
|
||||
explain (verbose, costs off)
|
||||
select count(c6), sum(c1), avg(c1), min(c2), max(c1), stddev(c2), sum(c1) * (random() <= 1)::int as sum2 from ft1 where c2 < 5 group by c2 order by 1, 2 limit 1;
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan
|
||||
Output: (count(c6)), (sum(c1)), (avg(c1)), (min(c2)), (max(c1)), (stddev(c2)), ((sum(c1)) * ((random() <= '1'::double precision))::integer), c2
|
||||
Relations: Aggregate on (public.ft1)
|
||||
Remote SQL: SELECT count(c6), sum("C 1"), avg("C 1"), min(c2), max("C 1"), stddev(c2), c2 FROM "S 1"."T 1" WHERE ((c2 < 5)) GROUP BY 7 ORDER BY count(c6) ASC NULLS LAST, sum("C 1") ASC NULLS LAST LIMIT 1::bigint
|
||||
(4 rows)
|
||||
|
||||
select count(c6), sum(c1), avg(c1), min(c2), max(c1), stddev(c2), sum(c1) * (random() <= 1)::int as sum2 from ft1 where c2 < 5 group by c2 order by 1, 2 limit 1;
|
||||
count | sum | avg | min | max | stddev | sum2
|
||||
-------+-------+----------------------+-----+-----+--------+-------
|
||||
100 | 49600 | 496.0000000000000000 | 1 | 991 | 0 | 49600
|
||||
(1 row)
|
||||
|
||||
-- Aggregate is not pushed down as aggregation contains random()
|
||||
explain (verbose, costs off)
|
||||
select sum(c1 * (random() <= 1)::int) as sum, avg(c1) from ft1;
|
||||
@ -4034,14 +3928,12 @@ SELECT * FROM ft1 t1 WHERE t1.tableoid = 'ft1'::regclass LIMIT 1;
|
||||
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT tableoid::regclass, * FROM ft1 t1 LIMIT 1;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------
|
||||
Limit
|
||||
Output: ((tableoid)::regclass), c1, c2, c3, c4, c5, c6, c7, c8
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: (tableoid)::regclass, c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1"
|
||||
(5 rows)
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------
|
||||
Foreign Scan on public.ft1 t1
|
||||
Output: (tableoid)::regclass, c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" LIMIT 1::bigint
|
||||
(3 rows)
|
||||
|
||||
SELECT tableoid::regclass, * FROM ft1 t1 LIMIT 1;
|
||||
tableoid | c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
|
||||
@ -4066,14 +3958,12 @@ SELECT * FROM ft1 t1 WHERE t1.ctid = '(0,2)';
|
||||
|
||||
EXPLAIN (VERBOSE, COSTS OFF)
|
||||
SELECT ctid, * FROM ft1 t1 LIMIT 1;
|
||||
QUERY PLAN
|
||||
-------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
-----------------------------------------------------------------------------------------------
|
||||
Foreign Scan on public.ft1 t1
|
||||
Output: ctid, c1, c2, c3, c4, c5, c6, c7, c8
|
||||
-> Foreign Scan on public.ft1 t1
|
||||
Output: ctid, c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8, ctid FROM "S 1"."T 1"
|
||||
(5 rows)
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8, ctid FROM "S 1"."T 1" LIMIT 1::bigint
|
||||
(3 rows)
|
||||
|
||||
SELECT ctid, * FROM ft1 t1 LIMIT 1;
|
||||
ctid | c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
|
||||
@ -4278,12 +4168,10 @@ INSERT INTO ft2 (c1,c2,c3) SELECT c1+1000,c2+100, c3 || c3 FROM ft2 LIMIT 20;
|
||||
Remote SQL: INSERT INTO "S 1"."T 1"("C 1", c2, c3, c4, c5, c6, c7, c8) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
|
||||
-> Subquery Scan on "*SELECT*"
|
||||
Output: "*SELECT*"."?column?", "*SELECT*"."?column?_1", NULL::integer, "*SELECT*"."?column?_2", NULL::timestamp with time zone, NULL::timestamp without time zone, NULL::character varying, 'ft2 '::character(10), NULL::user_enum
|
||||
-> Limit
|
||||
Output: ((ft2_1.c1 + 1000)), ((ft2_1.c2 + 100)), ((ft2_1.c3 || ft2_1.c3))
|
||||
-> Foreign Scan on public.ft2 ft2_1
|
||||
Output: (ft2_1.c1 + 1000), (ft2_1.c2 + 100), (ft2_1.c3 || ft2_1.c3)
|
||||
Remote SQL: SELECT "C 1", c2, c3 FROM "S 1"."T 1"
|
||||
(9 rows)
|
||||
-> Foreign Scan on public.ft2 ft2_1
|
||||
Output: (ft2_1.c1 + 1000), (ft2_1.c2 + 100), (ft2_1.c3 || ft2_1.c3)
|
||||
Remote SQL: SELECT "C 1", c2, c3 FROM "S 1"."T 1" LIMIT 20::bigint
|
||||
(7 rows)
|
||||
|
||||
INSERT INTO ft2 (c1,c2,c3) SELECT c1+1000,c2+100, c3 || c3 FROM ft2 LIMIT 20;
|
||||
INSERT INTO ft2 (c1,c2,c3)
|
||||
@ -6030,14 +5918,12 @@ VACUUM ANALYZE "S 1"."T 1";
|
||||
-- FIRST behavior here.
|
||||
-- ORDER BY DESC NULLS LAST options
|
||||
EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 ORDER BY c6 DESC NULLS LAST, c1 OFFSET 795 LIMIT 10;
|
||||
QUERY PLAN
|
||||
---------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
---------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
-> Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 DESC NULLS LAST, "C 1" ASC NULLS LAST
|
||||
(5 rows)
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 DESC NULLS LAST, "C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 795::bigint
|
||||
(3 rows)
|
||||
|
||||
SELECT * FROM ft1 ORDER BY c6 DESC NULLS LAST, c1 OFFSET 795 LIMIT 10;
|
||||
c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
|
||||
@ -6056,14 +5942,12 @@ SELECT * FROM ft1 ORDER BY c6 DESC NULLS LAST, c1 OFFSET 795 LIMIT 10;
|
||||
|
||||
-- ORDER BY DESC NULLS FIRST options
|
||||
EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 ORDER BY c6 DESC NULLS FIRST, c1 OFFSET 15 LIMIT 10;
|
||||
QUERY PLAN
|
||||
----------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
---------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
-> Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 DESC NULLS FIRST, "C 1" ASC NULLS LAST
|
||||
(5 rows)
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 DESC NULLS FIRST, "C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 15::bigint
|
||||
(3 rows)
|
||||
|
||||
SELECT * FROM ft1 ORDER BY c6 DESC NULLS FIRST, c1 OFFSET 15 LIMIT 10;
|
||||
c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
|
||||
@ -6082,14 +5966,12 @@ SELECT * FROM ft1 ORDER BY c6 DESC NULLS FIRST, c1 OFFSET 15 LIMIT 10;
|
||||
|
||||
-- ORDER BY ASC NULLS FIRST options
|
||||
EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 ORDER BY c6 ASC NULLS FIRST, c1 OFFSET 15 LIMIT 10;
|
||||
QUERY PLAN
|
||||
---------------------------------------------------------------------------------------------------------------------------------
|
||||
Limit
|
||||
QUERY PLAN
|
||||
--------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
-> Foreign Scan on public.ft1
|
||||
Output: c1, c2, c3, c4, c5, c6, c7, c8
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 ASC NULLS FIRST, "C 1" ASC NULLS LAST
|
||||
(5 rows)
|
||||
Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" ORDER BY c6 ASC NULLS FIRST, "C 1" ASC NULLS LAST LIMIT 10::bigint OFFSET 15::bigint
|
||||
(3 rows)
|
||||
|
||||
SELECT * FROM ft1 ORDER BY c6 ASC NULLS FIRST, c1 OFFSET 15 LIMIT 10;
|
||||
c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8
|
||||
|
||||
Reference in New Issue
Block a user