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contrib/btree_gin/expected/enum.out
63 строки
1 KB
Andrew Dunstan
Add btree_gin support for enum types
21 мар 2017, 18:04
21 мар 2017, 18:04
4ad0f88
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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; i --- r o y (3 rows) SELECT * FROM test_enum WHERE i<='g'::rainbow ORDER BY i; i --- r o y g (4 rows) SELECT * FROM test_enum WHERE i='g'::rainbow ORDER BY i; i --- g (1 row) SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i; i --- g b i v (4 rows) SELECT * FROM test_enum WHERE i>'g'::rainbow ORDER BY i; i --- b i v (3 rows) explain (costs off) SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i; QUERY PLAN ----------------------------------------------- Sort Sort Key: i -> Bitmap Heap Scan on test_enum Recheck Cond: (i >= 'g'::rainbow) -> Bitmap Index Scan on idx_enum Index Cond: (i >= 'g'::rainbow) (6 rows) -- 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);