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|
-- int8 check
CREATE TABLE int8tmp (a int8);
\copy int8tmp from 'data/int8.data'
SET enable_seqscan=on;
SELECT count(*) FROM int8tmp WHERE a < 464571291354841;
count
-------
276
(1 row)
SELECT count(*) FROM int8tmp WHERE a <= 464571291354841;
count
-------
277
(1 row)
SELECT count(*) FROM int8tmp WHERE a = 464571291354841;
count
-------
1
(1 row)
SELECT count(*) FROM int8tmp WHERE a >= 464571291354841;
count
-------
271
(1 row)
SELECT count(*) FROM int8tmp WHERE a > 464571291354841;
count
-------
270
(1 row)
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;
a | ?column?
-----------------+----------------
464571291354841 | 0
457257666629329 | 7313624725512
478227196042750 | 13655904687909
(3 rows)
CREATE INDEX int8idx ON int8tmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM int8tmp WHERE a < 464571291354841::int8;
count
-------
276
(1 row)
SELECT count(*) FROM int8tmp WHERE a <= 464571291354841::int8;
count
-------
277
(1 row)
SELECT count(*) FROM int8tmp WHERE a = 464571291354841::int8;
count
-------
1
(1 row)
SELECT count(*) FROM int8tmp WHERE a >= 464571291354841::int8;
count
-------
271
(1 row)
SELECT count(*) FROM int8tmp WHERE a > 464571291354841::int8;
count
-------
270
(1 row)
EXPLAIN (COSTS OFF)
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;
QUERY PLAN
-----------------------------------------------------
Limit
-> Index Only Scan using int8idx on int8tmp
Order By: (a <-> '464571291354841'::bigint)
(3 rows)
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;
a | ?column?
-----------------+----------------
464571291354841 | 0
457257666629329 | 7313624725512
478227196042750 | 13655904687909
(3 rows)
|
