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set enable_seqscan=off;
CREATE TABLE test_text (
i text
);
INSERT INTO test_text VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
CREATE INDEX idx_text ON test_text USING rum (i);
SELECT * FROM test_text WHERE i<'abc' ORDER BY i;
SELECT * FROM test_text WHERE i<='abc' ORDER BY i;
SELECT * FROM test_text WHERE i='abc' ORDER BY i;
SELECT * FROM test_text WHERE i>='abc' ORDER BY i;
SELECT * FROM test_text WHERE i>'abc' ORDER BY i;
CREATE TABLE test_text_o AS SELECT id::text, t FROM tsts;
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
CREATE INDEX test_text_o_idx ON test_text_o USING rum
(t rum_tsvector_addon_ops, id)
WITH (attach = 'id', to = 't');
RESET enable_indexscan;
RESET enable_indexonlyscan;
SET enable_bitmapscan=OFF;
SET enable_seqscan = off;
EXPLAIN (costs off)
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
EXPLAIN (costs off)
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
SELECT id FROM test_text_o WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
CREATE TABLE test_text_a AS SELECT id::text, t FROM tsts;
-- Should fail, temporarly it isn't allowed to order an index over pass-by-reference column
CREATE INDEX test_text_a_idx ON test_text_a USING rum
(t rum_tsvector_addon_ops, id)
WITH (attach = 'id', to = 't', order_by_attach='t');
EXPLAIN (costs off)
SELECT count(*) FROM test_text_a WHERE id < '400';
SELECT count(*) FROM test_text_a WHERE id < '400';
EXPLAIN (costs off)
SELECT id FROM test_text_a WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
SELECT id FROM test_text_a WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
EXPLAIN (costs off)
SELECT id FROM test_text_a WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
SELECT id FROM test_text_a WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
CREATE TABLE test_text_h_o AS SELECT id::text, t FROM tsts;
CREATE INDEX test_text_h_o_idx ON test_text_h_o USING rum
(t rum_tsvector_hash_addon_ops, id)
WITH (attach = 'id', to = 't');
EXPLAIN (costs off)
SELECT id FROM test_text_h_o WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
SELECT id FROM test_text_h_o WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
EXPLAIN (costs off)
SELECT id FROM test_text_h_o WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
SELECT id FROM test_text_h_o WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
CREATE TABLE test_text_h_a AS SELECT id::text, t FROM tsts;
-- Should fail, temporarly it isn't allowed to order an index over pass-by-reference column
CREATE INDEX test_text_h_a_idx ON test_text_h_a USING rum
(t rum_tsvector_hash_addon_ops, id)
WITH (attach = 'id', to = 't', order_by_attach='t');
EXPLAIN (costs off)
SELECT count(*) FROM test_text_h_a WHERE id < '400';
SELECT count(*) FROM test_text_h_a WHERE id < '400';
EXPLAIN (costs off)
SELECT id FROM test_text_h_a WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
SELECT id FROM test_text_h_a WHERE t @@ 'wr&qh' AND id <= '400' ORDER BY id;
EXPLAIN (costs off)
SELECT id FROM test_text_h_a WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
SELECT id FROM test_text_h_a WHERE t @@ 'wr&qh' AND id >= '400' ORDER BY id;
|
