blob: d6dbcb423921df3f33b93c39a80bbb0b019016a1 (
plain)
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
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
-- enum check
create type rainbow as enum ('r','o','y','g','b','i','v');
CREATE TABLE enumtmp (a rainbow);
\copy enumtmp from 'data/enum.data'
SET enable_seqscan=on;
select a, count(*) from enumtmp group by a order by 1;
SELECT count(*) FROM enumtmp WHERE a < 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a <= 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a = 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a >= 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a > 'g'::rainbow;
SET client_min_messages = DEBUG1;
CREATE INDEX enumidx ON enumtmp USING gist ( a );
CREATE INDEX enumidx_b ON enumtmp USING gist ( a ) WITH (buffering=on);
DROP INDEX enumidx_b;
RESET client_min_messages;
SET enable_seqscan=off;
SELECT count(*) FROM enumtmp WHERE a < 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a <= 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a = 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a >= 'g'::rainbow;
SELECT count(*) FROM enumtmp WHERE a > 'g'::rainbow;
EXPLAIN (COSTS OFF)
SELECT count(*) FROM enumtmp WHERE a >= 'g'::rainbow;
|
