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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2014-12-12 12:41:49 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2014-12-12 12:41:49 -0500 |
| commit | 8ec8760fc87ecde0516e511f1c55aec627b01ea7 (patch) | |
| tree | 5c7130c19b17f0b9e5f56f1d64969e961bdb6d54 /contrib/postgres_fdw/expected/postgres_fdw.out | |
| parent | 237a8824430c607fce1eafde0c625744d50a455c (diff) | |
| download | postgresql-8ec8760fc87ecde0516e511f1c55aec627b01ea7.tar.gz postgresql-8ec8760fc87ecde0516e511f1c55aec627b01ea7.zip | |
Revert misguided change to postgres_fdw FOR UPDATE/SHARE code.
In commit 462bd95705a0c23ba0b0ba60a78d32566a0384c1, I changed postgres_fdw
to rely on get_plan_rowmark() instead of get_parse_rowmark(). I still
think that's a good idea in the long run, but as Etsuro Fujita pointed out,
it doesn't work today because planner.c forces PlanRowMarks to have
markType = ROW_MARK_COPY for all foreign tables. There's no urgent reason
to change this in the back branches, so let's just revert that part of
yesterday's commit rather than trying to design a better solution under
time pressure.
Also, add a regression test case showing what postgres_fdw does with FOR
UPDATE/SHARE. I'd blithely assumed there was one already, else I'd have
realized yesterday that this code didn't work.
Diffstat (limited to 'contrib/postgres_fdw/expected/postgres_fdw.out')
| -rw-r--r-- | contrib/postgres_fdw/expected/postgres_fdw.out | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/expected/postgres_fdw.out b/contrib/postgres_fdw/expected/postgres_fdw.out index c7ba042cb7f..a335e56a9df 100644 --- a/contrib/postgres_fdw/expected/postgres_fdw.out +++ b/contrib/postgres_fdw/expected/postgres_fdw.out @@ -237,6 +237,39 @@ SELECT * FROM ft1 t1 WHERE t1.c1 = 101 AND t1.c6 = '1' AND t1.c7 >= '1'; 101 | 1 | 00101 | Fri Jan 02 00:00:00 1970 PST | Fri Jan 02 00:00:00 1970 | 1 | 1 | foo (1 row) +-- with FOR UPDATE/SHARE +EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c1 = 101 FOR UPDATE; + QUERY PLAN +---------------------------------------------------------------------------------------------------------------- + LockRows + Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.* + -> Foreign Scan on public.ft1 t1 + Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.* + Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 101)) FOR UPDATE +(5 rows) + +SELECT * FROM ft1 t1 WHERE c1 = 101 FOR UPDATE; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 +-----+----+-------+------------------------------+--------------------------+----+------------+----- + 101 | 1 | 00101 | Fri Jan 02 00:00:00 1970 PST | Fri Jan 02 00:00:00 1970 | 1 | 1 | foo +(1 row) + +EXPLAIN (VERBOSE, COSTS false) SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE; + QUERY PLAN +--------------------------------------------------------------------------------------------------------------- + LockRows + Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.* + -> Foreign Scan on public.ft1 t1 + Output: c1, c2, c3, c4, c5, c6, c7, c8, t1.* + Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" WHERE (("C 1" = 102)) FOR SHARE +(5 rows) + +SELECT * FROM ft1 t1 WHERE c1 = 102 FOR SHARE; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 +-----+----+-------+------------------------------+--------------------------+----+------------+----- + 102 | 2 | 00102 | Sat Jan 03 00:00:00 1970 PST | Sat Jan 03 00:00:00 1970 | 2 | 2 | foo +(1 row) + -- aggregate SELECT COUNT(*) FROM ft1 t1; count |