postgresql/contrib/btree_gist/sql/interval.sql

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2023-05-09 21:11:15 +00:00
-- interval check
CREATE TABLE intervaltmp (a interval);
\copy intervaltmp from 'data/interval.data'
SET enable_seqscan=on;
SELECT count(*) FROM intervaltmp WHERE a < '199 days 21:21:23';
SELECT count(*) FROM intervaltmp WHERE a <= '199 days 21:21:23';
SELECT count(*) FROM intervaltmp WHERE a = '199 days 21:21:23';
SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23';
SELECT count(*) FROM intervaltmp WHERE a > '199 days 21:21:23';
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
CREATE INDEX intervalidx ON intervaltmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM intervaltmp WHERE a < '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a <= '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a = '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a > '199 days 21:21:23'::interval;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
SET enable_indexonlyscan=off;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;