1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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);
|
