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Add btree_gin support for enum types

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Reviewed by Tom Lane and Anastasia Lubennikova

Discussion:  http://postgr.es/m/56EA8A71.8060107@dunslane.net
This commit is contained in:
Andrew Dunstan
2017-03-21 11:04:17 -04:00
parent f7946a92b6
commit 4ad0f88c44
6 changed files with 199 additions and 11 deletions
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26
contrib/btree_gin/sql/enum.sql Normal file
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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);