38 lines
1.3 KiB
SQL
38 lines
1.3 KiB
SQL
-- timestamp check
|
|
|
|
CREATE TABLE timestamptmp (a timestamp);
|
|
|
|
\copy timestamptmp from 'data/timestamp.data'
|
|
|
|
SET enable_seqscan=on;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a < '2004-10-26 08:55:08';
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a <= '2004-10-26 08:55:08';
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a = '2004-10-26 08:55:08';
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08';
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08';
|
|
|
|
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
|
|
|
|
CREATE INDEX timestampidx ON timestamptmp USING gist ( a );
|
|
|
|
SET enable_seqscan=off;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a < '2004-10-26 08:55:08'::timestamp;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a <= '2004-10-26 08:55:08'::timestamp;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a = '2004-10-26 08:55:08'::timestamp;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08'::timestamp;
|
|
|
|
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08'::timestamp;
|
|
|
|
EXPLAIN (COSTS OFF)
|
|
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
|
|
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
|