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|
set enable_seqscan=off;
CREATE TABLE test_int2 (
i int2
);
INSERT INTO test_int2 VALUES (-2),(-1),(0),(1),(2),(3);
CREATE INDEX idx_int2 ON test_int2 USING gin (i);
SELECT * FROM test_int2 WHERE i<1::int2 ORDER BY i;
i
----
-2
-1
0
(3 rows)
SELECT * FROM test_int2 WHERE i<=1::int2 ORDER BY i;
i
----
-2
-1
0
1
(4 rows)
SELECT * FROM test_int2 WHERE i=1::int2 ORDER BY i;
i
---
1
(1 row)
SELECT * FROM test_int2 WHERE i>=1::int2 ORDER BY i;
i
---
1
2
3
(3 rows)
SELECT * FROM test_int2 WHERE i>1::int2 ORDER BY i;
i
---
2
3
(2 rows)
explain (costs off)
SELECT * FROM test_int2 WHERE i<1::int4 ORDER BY i;
QUERY PLAN
-------------------------------------------
Sort
Sort Key: i
-> Bitmap Heap Scan on test_int2
Recheck Cond: (i < 1)
-> Bitmap Index Scan on idx_int2
Index Cond: (i < 1)
(6 rows)
SELECT * FROM test_int2 WHERE i<1::int4 ORDER BY i;
i
----
-2
-1
0
(3 rows)
SELECT * FROM test_int2 WHERE i<=1::int4 ORDER BY i;
i
----
-2
-1
0
1
(4 rows)
SELECT * FROM test_int2 WHERE i=1::int4 ORDER BY i;
i
---
1
(1 row)
SELECT * FROM test_int2 WHERE i>=1::int4 ORDER BY i;
i
---
1
2
3
(3 rows)
SELECT * FROM test_int2 WHERE i>1::int4 ORDER BY i;
i
---
2
3
(2 rows)
explain (costs off)
SELECT * FROM test_int2 WHERE i<1::int8 ORDER BY i;
QUERY PLAN
---------------------------------------------
Sort
Sort Key: i
-> Bitmap Heap Scan on test_int2
Recheck Cond: (i < '1'::bigint)
-> Bitmap Index Scan on idx_int2
Index Cond: (i < '1'::bigint)
(6 rows)
SELECT * FROM test_int2 WHERE i<1::int8 ORDER BY i;
i
----
-2
-1
0
(3 rows)
SELECT * FROM test_int2 WHERE i<=1::int8 ORDER BY i;
i
----
-2
-1
0
1
(4 rows)
SELECT * FROM test_int2 WHERE i=1::int8 ORDER BY i;
i
---
1
(1 row)
SELECT * FROM test_int2 WHERE i>=1::int8 ORDER BY i;
i
---
1
2
3
(3 rows)
SELECT * FROM test_int2 WHERE i>1::int8 ORDER BY i;
i
---
2
3
(2 rows)
-- Check endpoint and out-of-range cases
INSERT INTO test_int2 VALUES ((-32768)::int2),(32767);
SELECT gin_clean_pending_list('idx_int2');
gin_clean_pending_list
------------------------
1
(1 row)
SELECT * FROM test_int2 WHERE i<(-32769)::int4 ORDER BY i;
i
---
(0 rows)
SELECT * FROM test_int2 WHERE i<=(-32769)::int4 ORDER BY i;
i
---
(0 rows)
SELECT * FROM test_int2 WHERE i=(-32769)::int4 ORDER BY i;
i
---
(0 rows)
SELECT * FROM test_int2 WHERE i>=(-32769)::int4 ORDER BY i;
i
--------
-32768
-2
-1
0
1
2
3
32767
(8 rows)
SELECT * FROM test_int2 WHERE i>(-32769)::int4 ORDER BY i;
i
--------
-32768
-2
-1
0
1
2
3
32767
(8 rows)
SELECT * FROM test_int2 WHERE i<32768::int4 ORDER BY i;
i
--------
-32768
-2
-1
0
1
2
3
32767
(8 rows)
SELECT * FROM test_int2 WHERE i<=32768::int4 ORDER BY i;
i
--------
-32768
-2
-1
0
1
2
3
32767
(8 rows)
SELECT * FROM test_int2 WHERE i=32768::int4 ORDER BY i;
i
---
(0 rows)
SELECT * FROM test_int2 WHERE i>=32768::int4 ORDER BY i;
i
---
(0 rows)
SELECT * FROM test_int2 WHERE i>32768::int4 ORDER BY i;
i
---
(0 rows)
|
