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Add sortsupport for gist_btree opclasses, for faster index builds.

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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
This commit is contained in:
Heikki Linnakangas
2021-04-07 13:22:05 +03:00
parent dd13ad9d39
commit 9f984ba6d2
77 changed files with 1530 additions and 3 deletions
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4
contrib/btree_gist/sql/float8.sql
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@ -18,7 +18,11 @@ SELECT count(*) FROM float8tmp WHERE a > -1890.0;
SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
SET client_min_messages = DEBUG1;
CREATE INDEX float8idx ON float8tmp USING gist ( a );
CREATE INDEX float8idx_b ON float8tmp USING gist ( a ) WITH (buffering=on);
DROP INDEX float8idx_b;
RESET client_min_messages;
SET enable_seqscan=off;