/
githubmirror
/
postgres
Обзор
Документация
Войти
/
githubmirror
/
postgres
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
contrib/btree_gist/sql/text.sql
40 строк
33 KB
Heikki Linnakangas
Revert "Add sortsupport for gist_btree opclasses, for faster index builds."
07 апр 2021, 14:33
07 апр 2021, 14:33
d92b1cd
Код
Авторство
О чём код?
-- text check CREATE TABLE texttmp (a text); \copy texttmp from 'data/text.data' \copy texttmp from 'data/char.data' SET enable_seqscan=on; SELECT count(*) FROM texttmp WHERE a < '31b0'; SELECT count(*) FROM texttmp WHERE a <= '31b0'; SELECT count(*) FROM texttmp WHERE a = '31b0'; SELECT count(*) FROM texttmp WHERE a >= '31b0'; SELECT count(*) FROM texttmp WHERE a > '31b0'; CREATE INDEX textidx ON texttmp USING GIST ( a ); SET enable_seqscan=off; SELECT count(*) FROM texttmp WHERE a < '31b0'::text; SELECT count(*) FROM texttmp WHERE a <= '31b0'::text; SELECT count(*) FROM texttmp WHERE a = '31b0'::text; SELECT count(*) FROM texttmp WHERE a >= '31b0'::text; SELECT count(*) FROM texttmp WHERE a > '31b0'::text; SELECT count(*) FROM texttmp WHERE a = '2eb2c961c1cbf6 cf8d7b68cb9a2f36 7bbedb4ae7 06ec46c55611a466eb7e3edcc009ca6 e 5ed9cd0ea5a4e55d601027c56a 64cacf3a42afc 90e63000c34506993345355640 79bce 173bb7 … [Строка слишком длинная. Вы можете скачать файл] -- Test index-only scans SET enable_bitmapscan=off; EXPLAIN (COSTS OFF) SELECT * FROM texttmp WHERE a BETWEEN '31a' AND '31c'; SELECT * FROM texttmp WHERE a BETWEEN '31a' AND '31c';