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|
CREATE TABLE atstsh (id int, t tsvector, d timestamp);
\copy atstsh from 'data/tsts.data'
CREATE INDEX atstsh_idx ON atstsh USING rum (t rum_tsvector_hash_addon_ops, d)
WITH (attach = 'd', to = 't', order_by_attach='t');
ERROR: doesn't support order index over pass-by-reference column
INSERT INTO atstsh VALUES (-1, 't1 t2', '2016-05-02 02:24:22.326724');
INSERT INTO atstsh VALUES (-2, 't1 t2 t3', '2016-05-02 02:26:22.326724');
SELECT count(*) FROM atstsh WHERE t @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
SET enable_indexscan=OFF;
SET enable_indexonlyscan=OFF;
SET enable_bitmapscan=OFF;
SELECT id, d, d <=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=> '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
355 | Mon May 16 14:21:22.326724 2016 | 2.673276
354 | Mon May 16 13:21:22.326724 2016 | 3602.673276
371 | Tue May 17 06:21:22.326724 2016 | 57597.326724
406 | Wed May 18 17:21:22.326724 2016 | 183597.326724
415 | Thu May 19 02:21:22.326724 2016 | 215997.326724
(5 rows)
SELECT id, d, d <=| '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=| '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
355 | Mon May 16 14:21:22.326724 2016 | 2.673276
354 | Mon May 16 13:21:22.326724 2016 | 3602.673276
252 | Thu May 12 07:21:22.326724 2016 | 370802.673276
232 | Wed May 11 11:21:22.326724 2016 | 442802.673276
168 | Sun May 08 19:21:22.326724 2016 | 673202.673276
(5 rows)
SELECT id, d, d |=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d |=> '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
371 | Tue May 17 06:21:22.326724 2016 | 57597.326724
406 | Wed May 18 17:21:22.326724 2016 | 183597.326724
415 | Thu May 19 02:21:22.326724 2016 | 215997.326724
428 | Thu May 19 15:21:22.326724 2016 | 262797.326724
457 | Fri May 20 20:21:22.326724 2016 | 367197.326724
(5 rows)
SELECT count(*) FROM atstsh WHERE d < '2016-05-16 14:21:25';
count
-------
357
(1 row)
SELECT count(*) FROM atstsh WHERE d > '2016-05-16 14:21:25';
count
-------
153
(1 row)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d <= '2016-05-16 14:21:25' ORDER BY d;
id | d
-----+---------------------------------
16 | Mon May 02 11:21:22.326724 2016
39 | Tue May 03 10:21:22.326724 2016
71 | Wed May 04 18:21:22.326724 2016
135 | Sat May 07 10:21:22.326724 2016
168 | Sun May 08 19:21:22.326724 2016
232 | Wed May 11 11:21:22.326724 2016
252 | Thu May 12 07:21:22.326724 2016
354 | Mon May 16 13:21:22.326724 2016
355 | Mon May 16 14:21:22.326724 2016
(9 rows)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d >= '2016-05-16 14:21:25' ORDER BY d;
id | d
-----+---------------------------------
371 | Tue May 17 06:21:22.326724 2016
406 | Wed May 18 17:21:22.326724 2016
415 | Thu May 19 02:21:22.326724 2016
428 | Thu May 19 15:21:22.326724 2016
457 | Fri May 20 20:21:22.326724 2016
458 | Fri May 20 21:21:22.326724 2016
484 | Sat May 21 23:21:22.326724 2016
496 | Sun May 22 11:21:22.326724 2016
(8 rows)
-- Test bitmap index scan
SET enable_bitmapscan=on;
SET enable_seqscan = off;
EXPLAIN (costs off)
SELECT count(*) FROM atstsh WHERE t @@ 'wr|qh';
QUERY PLAN
---------------------------------------------------
Aggregate
-> Seq Scan on atstsh
Filter: (t @@ '''wr'' | ''qh'''::tsquery)
(3 rows)
SELECT count(*) FROM atstsh WHERE t @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM atstsh WHERE t @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
EXPLAIN (costs off)
SELECT count(*) FROM atstsh WHERE d < '2016-05-16 14:21:25';
QUERY PLAN
-------------------------------------------------------------------------------
Aggregate
-> Seq Scan on atstsh
Filter: (d < 'Mon May 16 14:21:25 2016'::timestamp without time zone)
(3 rows)
SELECT count(*) FROM atstsh WHERE d < '2016-05-16 14:21:25';
count
-------
357
(1 row)
EXPLAIN (costs off)
SELECT count(*) FROM atstsh WHERE d > '2016-05-16 14:21:25';
QUERY PLAN
-------------------------------------------------------------------------------
Aggregate
-> Seq Scan on atstsh
Filter: (d > 'Mon May 16 14:21:25 2016'::timestamp without time zone)
(3 rows)
SELECT count(*) FROM atstsh WHERE d > '2016-05-16 14:21:25';
count
-------
153
(1 row)
-- Test index scan
SET enable_indexscan=on;
SET enable_indexonlyscan=on;
SET enable_bitmapscan=off;
EXPLAIN (costs off)
SELECT id, d, d <=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=> '2016-05-16 14:21:25' LIMIT 5;
QUERY PLAN
-------------------------------------------------------------------------------------
Limit
-> Sort
Sort Key: ((d <=> 'Mon May 16 14:21:25 2016'::timestamp without time zone))
-> Seq Scan on atstsh
Filter: (t @@ '''wr'' & ''qh'''::tsquery)
(5 rows)
SELECT id, d, d <=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=> '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
355 | Mon May 16 14:21:22.326724 2016 | 2.673276
354 | Mon May 16 13:21:22.326724 2016 | 3602.673276
371 | Tue May 17 06:21:22.326724 2016 | 57597.326724
406 | Wed May 18 17:21:22.326724 2016 | 183597.326724
415 | Thu May 19 02:21:22.326724 2016 | 215997.326724
(5 rows)
EXPLAIN (costs off)
SELECT id, d, d <=| '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=| '2016-05-16 14:21:25' LIMIT 5;
QUERY PLAN
-------------------------------------------------------------------------------------
Limit
-> Sort
Sort Key: ((d <=| 'Mon May 16 14:21:25 2016'::timestamp without time zone))
-> Seq Scan on atstsh
Filter: (t @@ '''wr'' & ''qh'''::tsquery)
(5 rows)
SELECT id, d, d <=| '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d <=| '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
355 | Mon May 16 14:21:22.326724 2016 | 2.673276
354 | Mon May 16 13:21:22.326724 2016 | 3602.673276
252 | Thu May 12 07:21:22.326724 2016 | 370802.673276
232 | Wed May 11 11:21:22.326724 2016 | 442802.673276
168 | Sun May 08 19:21:22.326724 2016 | 673202.673276
(5 rows)
EXPLAIN (costs off)
SELECT id, d, d |=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d |=> '2016-05-16 14:21:25' LIMIT 5;
QUERY PLAN
-------------------------------------------------------------------------------------
Limit
-> Sort
Sort Key: ((d |=> 'Mon May 16 14:21:25 2016'::timestamp without time zone))
-> Seq Scan on atstsh
Filter: (t @@ '''wr'' & ''qh'''::tsquery)
(5 rows)
SELECT id, d, d |=> '2016-05-16 14:21:25' FROM atstsh WHERE t @@ 'wr&qh' ORDER BY d |=> '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+---------------
371 | Tue May 17 06:21:22.326724 2016 | 57597.326724
406 | Wed May 18 17:21:22.326724 2016 | 183597.326724
415 | Thu May 19 02:21:22.326724 2016 | 215997.326724
428 | Thu May 19 15:21:22.326724 2016 | 262797.326724
457 | Fri May 20 20:21:22.326724 2016 | 367197.326724
(5 rows)
EXPLAIN (costs off)
SELECT id, d, d <=> '2016-05-16 14:21:25' FROM atstsh ORDER BY d <=> '2016-05-16 14:21:25' LIMIT 5;
QUERY PLAN
-------------------------------------------------------------------------------------
Limit
-> Sort
Sort Key: ((d <=> 'Mon May 16 14:21:25 2016'::timestamp without time zone))
-> Seq Scan on atstsh
(4 rows)
SELECT id, d, d <=> '2016-05-16 14:21:25' FROM atstsh ORDER BY d <=> '2016-05-16 14:21:25' LIMIT 5;
id | d | ?column?
-----+---------------------------------+-------------
355 | Mon May 16 14:21:22.326724 2016 | 2.673276
356 | Mon May 16 15:21:22.326724 2016 | 3597.326724
354 | Mon May 16 13:21:22.326724 2016 | 3602.673276
357 | Mon May 16 16:21:22.326724 2016 | 7197.326724
353 | Mon May 16 12:21:22.326724 2016 | 7202.673276
(5 rows)
EXPLAIN (costs off)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d <= '2016-05-16 14:21:25' ORDER BY d;
QUERY PLAN
------------------------------------------------------------------------------------------------------------------------
Sort
Sort Key: d
-> Seq Scan on atstsh
Filter: ((t @@ '''wr'' & ''qh'''::tsquery) AND (d <= 'Mon May 16 14:21:25 2016'::timestamp without time zone))
(4 rows)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d <= '2016-05-16 14:21:25' ORDER BY d;
id | d
-----+---------------------------------
16 | Mon May 02 11:21:22.326724 2016
39 | Tue May 03 10:21:22.326724 2016
71 | Wed May 04 18:21:22.326724 2016
135 | Sat May 07 10:21:22.326724 2016
168 | Sun May 08 19:21:22.326724 2016
232 | Wed May 11 11:21:22.326724 2016
252 | Thu May 12 07:21:22.326724 2016
354 | Mon May 16 13:21:22.326724 2016
355 | Mon May 16 14:21:22.326724 2016
(9 rows)
EXPLAIN (costs off)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d >= '2016-05-16 14:21:25' ORDER BY d;
QUERY PLAN
------------------------------------------------------------------------------------------------------------------------
Sort
Sort Key: d
-> Seq Scan on atstsh
Filter: ((t @@ '''wr'' & ''qh'''::tsquery) AND (d >= 'Mon May 16 14:21:25 2016'::timestamp without time zone))
(4 rows)
SELECT id, d FROM atstsh WHERE t @@ 'wr&qh' AND d >= '2016-05-16 14:21:25' ORDER BY d;
id | d
-----+---------------------------------
371 | Tue May 17 06:21:22.326724 2016
406 | Wed May 18 17:21:22.326724 2016
415 | Thu May 19 02:21:22.326724 2016
428 | Thu May 19 15:21:22.326724 2016
457 | Fri May 20 20:21:22.326724 2016
458 | Fri May 20 21:21:22.326724 2016
484 | Sat May 21 23:21:22.326724 2016
496 | Sun May 22 11:21:22.326724 2016
(8 rows)
|
