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contrib/btree_gist/sql/date.sql
37 строк
1022 B
Heikki Linnakangas
Revert "Add sortsupport for gist_btree opclasses, for faster index builds."
07 апр 2021, 14:33
07 апр 2021, 14:33
d92b1cd
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-- date check CREATE TABLE datetmp (a date); \copy datetmp from 'data/date.data' SET enable_seqscan=on; SELECT count(*) FROM datetmp WHERE a < '2001-02-13'; SELECT count(*) FROM datetmp WHERE a <= '2001-02-13'; SELECT count(*) FROM datetmp WHERE a = '2001-02-13'; SELECT count(*) FROM datetmp WHERE a >= '2001-02-13'; SELECT count(*) FROM datetmp WHERE a > '2001-02-13'; SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3; CREATE INDEX dateidx ON datetmp USING gist ( a ); SET enable_seqscan=off; SELECT count(*) FROM datetmp WHERE a < '2001-02-13'::date; SELECT count(*) FROM datetmp WHERE a <= '2001-02-13'::date; SELECT count(*) FROM datetmp WHERE a = '2001-02-13'::date; SELECT count(*) FROM datetmp WHERE a >= '2001-02-13'::date; SELECT count(*) FROM datetmp WHERE a > '2001-02-13'::date; EXPLAIN (COSTS OFF) SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3; SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;