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https://github.com/hanzoai/postgres.git
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Tom Lane
e74f7a5a34
Using the just-added infrastructure, extend btree_gin to support cross-type operators in its other opclasses. All of the cross-type comparison operators supported by the core btree opclasses for these datatypes are now available for btree_gin indexes as well. Author: Tom Lane <[email protected]> Reviewed-by: Arseniy Mukhin <[email protected]> Discussion: https://postgr.es/m/[email protected]
33 lines
1.2 KiB
SQL
33 lines
1.2 KiB
SQL
set enable_seqscan=off;
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CREATE TABLE test_name (
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i name
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);
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INSERT INTO test_name VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
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CREATE INDEX idx_name ON test_name USING gin (i);
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SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
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SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
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SELECT * FROM test_name WHERE i='abc' ORDER BY i;
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SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
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SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
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EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
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EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
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EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i='abc' ORDER BY i;
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EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
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EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
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explain (costs off)
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SELECT * FROM test_name WHERE i<'abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i<'abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i<='abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i='abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i>='abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i>'abc'::text ORDER BY i;
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SELECT * FROM test_name WHERE i<=repeat('abc', 100) ORDER BY i;
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