mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-25 03:37:19 +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
35 lines
840 B
SQL
35 lines
840 B
SQL
-- oid check
|
|
|
|
SET enable_seqscan=on;
|
|
|
|
CREATE TEMPORARY TABLE oidtmp (oid oid);
|
|
INSERT INTO oidtmp SELECT g.i::oid FROM generate_series(1, 1000) g(i);
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid < 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid <= 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid = 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid >= 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid > 17;
|
|
|
|
SET client_min_messages = DEBUG1;
|
|
CREATE INDEX oididx ON oidtmp USING gist ( oid );
|
|
CREATE INDEX oididx_b ON oidtmp USING gist ( oid ) WITH (buffering=on);
|
|
DROP INDEX oididx_b;
|
|
RESET client_min_messages;
|
|
|
|
SET enable_seqscan=off;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid < 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid <= 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid = 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid >= 17;
|
|
|
|
SELECT count(*) FROM oidtmp WHERE oid > 17;
|