mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-29 10:37:19 +02:00
9f984ba6d2
Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by
sorting all the data. This commit adds the sortsupport functions needed
to make use of that feature for btree_gist.
Author: Andrey Borodin
Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru
36 lines
1.2 KiB
SQL
36 lines
1.2 KiB
SQL
-- uuid check
|
|
|
|
CREATE TABLE uuidtmp (a uuid);
|
|
|
|
\copy uuidtmp from 'data/uuid.data'
|
|
|
|
SET enable_seqscan=on;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a < '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a <= '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a = '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a >= '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a > '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
|
|
|
|
SET client_min_messages = DEBUG1;
|
|
CREATE INDEX uuididx ON uuidtmp USING gist ( a );
|
|
CREATE INDEX uuididx_b ON uuidtmp USING gist ( a ) WITH (buffering=on);
|
|
DROP INDEX uuididx_b;
|
|
RESET client_min_messages;
|
|
|
|
SET enable_seqscan=off;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a < '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a <= '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a = '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a >= '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
|
|
|
|
SELECT count(*) FROM uuidtmp WHERE a > '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
|