1 files changed, 41 insertions, 0 deletions
diff --git a/contrib/btree_gist/expected/not_equal.out b/contrib/btree_gist/expected/not_equal.out
new file mode 100644
index 0000000..85b1e86
--- /dev/null
+++ b/contrib/btree_gist/expected/not_equal.out
@@ -0,0 +1,41 @@
+SET enable_seqscan to false;
+-- test search for "not equals"
+CREATE TABLE test_ne (
+   a  TIMESTAMP,
+   b  NUMERIC
+);
+CREATE INDEX test_ne_idx ON test_ne USING gist (a, b);
+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('2011-09-01', 43.7);
+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;
+                                              QUERY PLAN                                              
+------------------------------------------------------------------------------------------------------
+ Bitmap Heap Scan on test_ne
+   Recheck Cond: ((a <> 'Thu Jan 01 00:00:00 2009'::timestamp without time zone) AND (b <> 10.7))
+   ->  Bitmap Index Scan on test_ne_idx
+         Index Cond: ((a <> 'Thu Jan 01 00:00:00 2009'::timestamp without time zone) AND (b <> 10.7))
+(4 rows)
+
+SELECT * FROM test_ne WHERE a <> '2009-01-01' AND b <> 10.7;
+            a             |   b   
+--------------------------+-------
+ Sat Feb 03 00:00:00 2007 | -91.3
+ Thu Sep 01 00:00:00 2011 |  43.7
+(2 rows)
+
+RESET enable_indexscan;
+-- test search for "not equals" using an exclusion constraint
+CREATE TABLE zoo (
+   cage   INTEGER,
+   animal TEXT,
+   EXCLUDE USING gist (cage WITH =, animal WITH <>)
+);
+INSERT INTO zoo VALUES(123, 'zebra');
+INSERT INTO zoo VALUES(123, 'zebra');
+INSERT INTO zoo VALUES(123, 'lion');
+ERROR:  conflicting key value violates exclusion constraint "zoo_cage_animal_excl"
+DETAIL:  Key (cage, animal)=(123, lion) conflicts with existing key (cage, animal)=(123, zebra).
+INSERT INTO zoo VALUES(124, 'lion');