1 files changed, 26 insertions, 0 deletions
diff --git a/contrib/btree_gin/sql/enum.sql b/contrib/btree_gin/sql/enum.sql
new file mode 100644
index 0000000..ec2a622
--- /dev/null
+++ b/contrib/btree_gin/sql/enum.sql
@@ -0,0 +1,26 @@
+set enable_seqscan=off;
+
+CREATE TYPE rainbow AS ENUM ('r','o','y','g','b','i','v');
+
+CREATE TABLE test_enum (
+   i rainbow
+);
+
+INSERT INTO test_enum VALUES ('v'),('y'),('r'),('g'),('o'),('i'),('b');
+
+CREATE INDEX idx_enum ON test_enum USING gin (i);
+
+SELECT * FROM test_enum WHERE i<'g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i<='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i>'g'::rainbow ORDER BY i;
+
+explain (costs off) SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+
+
+-- make sure we handle the non-evenly-numbered oid case for enums
+create type e as enum ('0', '2', '3');
+alter type e add value '1' after '0';
+create table t as select (i % 4)::text::e from generate_series(0, 100000) as i;
+create index on t using gin (e);