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Ensure plan stability in contrib/btree_gist regression test.

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Buildfarm member skink failed with symptoms suggesting that an
auto-analyze had happened and changed the plan displayed for a
test query.  Although this is evidently of low probability,
regression tests that sometimes fail are no fun, so add commands
to force a bitmap scan to be chosen.
This commit is contained in:
Tom Lane 2016-05-12 20:04:12 -04:00
parent 6e6e4f1659
commit a2c1bc36da
2 changed files with 6 additions and 0 deletions
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2
contrib/btree_gist/expected/not_equal.out
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@ -9,6 +9,7 @@ INSERT INTO test_ne SELECT '2009-01-01', 10.7 FROM generate_series(1,1000);
INSERT INTO test_ne VALUES('2007-02-03', -91.3); INSERT INTO test_ne VALUES('2007-02-03', -91.3);
INSERT INTO test_ne VALUES('2011-09-01', 43.7); INSERT INTO test_ne VALUES('2011-09-01', 43.7);
INSERT INTO test_ne SELECT '2009-01-01', 10.7 FROM generate_series(1,1000); INSERT INTO test_ne SELECT '2009-01-01', 10.7 FROM generate_series(1,1000);
SET enable_indexscan to false;
EXPLAIN (COSTS OFF) SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7; EXPLAIN (COSTS OFF) SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7;
QUERY PLAN QUERY PLAN
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
@ -25,6 +26,7 @@ SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7;
Thu Sep 01 00:00:00 2011 | 43.7 Thu Sep 01 00:00:00 2011 | 43.7
(2 rows) (2 rows)
RESET enable_indexscan;
-- test search for "not equals" using an exclusion constraint -- test search for "not equals" using an exclusion constraint
CREATE TABLE zoo ( CREATE TABLE zoo (
cage INTEGER, cage INTEGER,

4
contrib/btree_gist/sql/not_equal.sql
View File

@ -14,10 +14,14 @@ INSERT INTO test_ne VALUES('2007-02-03', -91.3);
INSERT INTO test_ne VALUES('2011-09-01', 43.7); INSERT INTO test_ne VALUES('2011-09-01', 43.7);
INSERT INTO test_ne SELECT '2009-01-01', 10.7 FROM generate_series(1,1000); INSERT INTO test_ne SELECT '2009-01-01', 10.7 FROM generate_series(1,1000);
SET enable_indexscan to false;
EXPLAIN (COSTS OFF) SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7; EXPLAIN (COSTS OFF) SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7;
SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7; SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7;
RESET enable_indexscan;
-- test search for "not equals" using an exclusion constraint -- test search for "not equals" using an exclusion constraint
CREATE TABLE zoo ( CREATE TABLE zoo (