diff options
Diffstat (limited to 'contrib/postgres_fdw/expected/postgres_fdw.out')
| -rw-r--r-- | contrib/postgres_fdw/expected/postgres_fdw.out | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/expected/postgres_fdw.out b/contrib/postgres_fdw/expected/postgres_fdw.out index 866a09bea52..b471c674af6 100644 --- a/contrib/postgres_fdw/expected/postgres_fdw.out +++ b/contrib/postgres_fdw/expected/postgres_fdw.out @@ -343,6 +343,76 @@ SELECT 'fixed', NULL FROM ft1 t1 WHERE c1 = 1; fixed | (1 row) +-- Test forcing the remote server to produce sorted data for a merge join. +SET enable_hashjoin TO false; +SET enable_nestloop TO false; +-- inner join; expressions in the clauses appear in the equivalence class list +EXPLAIN (VERBOSE, COSTS false) + SELECT t1.c1, t2."C 1" FROM ft2 t1 JOIN "S 1"."T 1" t2 ON (t1.c1 = t2."C 1") OFFSET 100 LIMIT 10; + QUERY PLAN +---------------------------------------------------------------------------- + Limit + Output: t1.c1, t2."C 1" + -> Merge Join + Output: t1.c1, t2."C 1" + Merge Cond: (t1.c1 = t2."C 1") + -> Foreign Scan on public.ft2 t1 + Output: t1.c1 + Remote SQL: SELECT "C 1" FROM "S 1"."T 1" ORDER BY "C 1" ASC + -> Index Only Scan using t1_pkey on "S 1"."T 1" t2 + Output: t2."C 1" +(10 rows) + +SELECT t1.c1, t2."C 1" FROM ft2 t1 JOIN "S 1"."T 1" t2 ON (t1.c1 = t2."C 1") OFFSET 100 LIMIT 10; + c1 | C 1 +-----+----- + 101 | 101 + 102 | 102 + 103 | 103 + 104 | 104 + 105 | 105 + 106 | 106 + 107 | 107 + 108 | 108 + 109 | 109 + 110 | 110 +(10 rows) + +-- outer join; expressions in the clauses do not appear in equivalence class +-- list but no output change as compared to the previous query +EXPLAIN (VERBOSE, COSTS false) + SELECT t1.c1, t2."C 1" FROM ft2 t1 LEFT JOIN "S 1"."T 1" t2 ON (t1.c1 = t2."C 1") OFFSET 100 LIMIT 10; + QUERY PLAN +---------------------------------------------------------------------------- + Limit + Output: t1.c1, t2."C 1" + -> Merge Left Join + Output: t1.c1, t2."C 1" + Merge Cond: (t1.c1 = t2."C 1") + -> Foreign Scan on public.ft2 t1 + Output: t1.c1 + Remote SQL: SELECT "C 1" FROM "S 1"."T 1" ORDER BY "C 1" ASC + -> Index Only Scan using t1_pkey on "S 1"."T 1" t2 + Output: t2."C 1" +(10 rows) + +SELECT t1.c1, t2."C 1" FROM ft2 t1 LEFT JOIN "S 1"."T 1" t2 ON (t1.c1 = t2."C 1") OFFSET 100 LIMIT 10; + c1 | C 1 +-----+----- + 101 | 101 + 102 | 102 + 103 | 103 + 104 | 104 + 105 | 105 + 106 | 106 + 107 | 107 + 108 | 108 + 109 | 109 + 110 | 110 +(10 rows) + +RESET enable_hashjoin; +RESET enable_nestloop; -- =================================================================== -- WHERE with remotely-executable conditions -- =================================================================== @@ -3538,6 +3608,101 @@ select tableoid::regclass, * from bar order by 1,2; bar2 | 7 | 177 (6 rows) +-- Test forcing the remote server to produce sorted data for a merge join, +-- but the foreign table is an inheritance child. +truncate table loct1; +truncate table only foo; +\set num_rows_foo 2000 +insert into loct1 select generate_series(0, :num_rows_foo, 2), generate_series(0, :num_rows_foo, 2), generate_series(0, :num_rows_foo, 2); +insert into foo select generate_series(1, :num_rows_foo, 2), generate_series(1, :num_rows_foo, 2); +SET enable_hashjoin to false; +SET enable_nestloop to false; +alter foreign table foo2 options (use_remote_estimate 'true'); +create index i_loct1_f1 on loct1(f1); +create index i_foo_f1 on foo(f1); +analyze foo; +analyze loct1; +-- inner join; expressions in the clauses appear in the equivalence class list +explain (verbose, costs off) + select foo.f1, loct1.f1 from foo join loct1 on (foo.f1 = loct1.f1) order by foo.f2 offset 10 limit 10; + QUERY PLAN +--------------------------------------------------------------------------------------- + Limit + Output: foo.f1, loct1.f1, foo.f2 + -> Sort + Output: foo.f1, loct1.f1, foo.f2 + Sort Key: foo.f2 + -> Merge Join + Output: foo.f1, loct1.f1, foo.f2 + Merge Cond: (foo.f1 = loct1.f1) + -> Merge Append + Sort Key: foo.f1 + -> Index Scan using i_foo_f1 on public.foo + Output: foo.f1, foo.f2 + -> Foreign Scan on public.foo2 + Output: foo2.f1, foo2.f2 + Remote SQL: SELECT f1, f2 FROM public.loct1 ORDER BY f1 ASC + -> Index Only Scan using i_loct1_f1 on public.loct1 + Output: loct1.f1 +(17 rows) + +select foo.f1, loct1.f1 from foo join loct1 on (foo.f1 = loct1.f1) order by foo.f2 offset 10 limit 10; + f1 | f1 +----+---- + 20 | 20 + 22 | 22 + 24 | 24 + 26 | 26 + 28 | 28 + 30 | 30 + 32 | 32 + 34 | 34 + 36 | 36 + 38 | 38 +(10 rows) + +-- outer join; expressions in the clauses do not appear in equivalence class +-- list but no output change as compared to the previous query +explain (verbose, costs off) + select foo.f1, loct1.f1 from foo left join loct1 on (foo.f1 = loct1.f1) order by foo.f2 offset 10 limit 10; + QUERY PLAN +--------------------------------------------------------------------------------------- + Limit + Output: foo.f1, loct1.f1, foo.f2 + -> Sort + Output: foo.f1, loct1.f1, foo.f2 + Sort Key: foo.f2 + -> Merge Left Join + Output: foo.f1, loct1.f1, foo.f2 + Merge Cond: (foo.f1 = loct1.f1) + -> Merge Append + Sort Key: foo.f1 + -> Index Scan using i_foo_f1 on public.foo + Output: foo.f1, foo.f2 + -> Foreign Scan on public.foo2 + Output: foo2.f1, foo2.f2 + Remote SQL: SELECT f1, f2 FROM public.loct1 ORDER BY f1 ASC + -> Index Only Scan using i_loct1_f1 on public.loct1 + Output: loct1.f1 +(17 rows) + +select foo.f1, loct1.f1 from foo left join loct1 on (foo.f1 = loct1.f1) order by foo.f2 offset 10 limit 10; + f1 | f1 +----+---- + 10 | 10 + 11 | + 12 | 12 + 13 | + 14 | 14 + 15 | + 16 | 16 + 17 | + 18 | 18 + 19 | +(10 rows) + +RESET enable_hashjoin; +RESET enable_nestloop; -- Test that WHERE CURRENT OF is not supported begin; declare c cursor for select * from bar where f1 = 7; |