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|
set enable_seqscan=off;
CREATE TABLE test_oid (
i oid
);
INSERT INTO test_oid VALUES (0),(1),(2),(3),(4),(5);
CREATE INDEX idx_oid ON test_oid USING rum (i);
SELECT * FROM test_oid WHERE i<3::oid ORDER BY i;
i
---
0
1
2
(3 rows)
SELECT * FROM test_oid WHERE i<=3::oid ORDER BY i;
i
---
0
1
2
3
(4 rows)
SELECT * FROM test_oid WHERE i=3::oid ORDER BY i;
i
---
3
(1 row)
SELECT * FROM test_oid WHERE i>=3::oid ORDER BY i;
i
---
3
4
5
(3 rows)
SELECT * FROM test_oid WHERE i>3::oid ORDER BY i;
i
---
4
5
(2 rows)
EXPLAIN (costs off)
SELECT *, i <=> 0::oid FROM test_oid ORDER BY i <=> 0::oid;
QUERY PLAN
--------------------------------------
Index Scan using idx_oid on test_oid
Order By: (i <=> '0'::oid)
(2 rows)
SELECT *, i <=> 0::oid FROM test_oid ORDER BY i <=> 0::oid;
i | ?column?
---+----------
0 | 0
1 | 1
2 | 2
3 | 3
4 | 4
5 | 5
(6 rows)
EXPLAIN (costs off)
SELECT *, i <=> 1::oid FROM test_oid WHERE i<1::oid ORDER BY i <=> 1::oid;
QUERY PLAN
--------------------------------------
Index Scan using idx_oid on test_oid
Index Cond: (i < '1'::oid)
Order By: (i <=> '1'::oid)
(3 rows)
SELECT *, i <=> 1::oid FROM test_oid WHERE i<1::oid ORDER BY i <=> 1::oid;
i | ?column?
---+----------
0 | 1
(1 row)
|
