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Add SP-GiST (space-partitioned GiST) index access method.

Browse Source 
SP-GiST is comparable to GiST in flexibility, but supports non-balanced
partitioned search structures rather than balanced trees.  As described at
PGCon 2011, this new indexing structure can beat GiST in both index build
time and query speed for search problems that it is well matched to.

There are a number of areas that could still use improvement, but at this
point the code seems committable.

Teodor Sigaev and Oleg Bartunov, with considerable revisions by Tom Lane
This commit is contained in:
Tom Lane
2011-12-17 16:41:16 -05:00
parent 19fc0fe3ae
commit 8daeb5ddd6
46 changed files with 10395 additions and 101 deletions
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290
src/test/regress/sql/create_index.sql
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@@ -92,6 +92,36 @@ CREATE INDEX ggpolygonind ON gpolygon_tbl USING gist (f1);
CREATE INDEX ggcircleind ON gcircle_tbl USING gist (f1);
--
-- SP-GiST
--
CREATE TABLE quad_point_tbl AS
SELECT point(unique1,unique2) AS p FROM tenk1;
INSERT INTO quad_point_tbl
SELECT '(333.0,400.0)'::point FROM generate_series(1,1000);
CREATE INDEX sp_quad_ind ON quad_point_tbl USING spgist (p);
CREATE TABLE kd_point_tbl AS SELECT * FROM quad_point_tbl;
CREATE INDEX sp_kd_ind ON kd_point_tbl USING spgist (p kd_point_ops);
CREATE TABLE suffix_text_tbl AS
SELECT name AS t FROM road;
INSERT INTO suffix_text_tbl
SELECT '0123456789abcdef' FROM generate_series(1,1000);
INSERT INTO suffix_text_tbl VALUES ('0123456789abcde');
INSERT INTO suffix_text_tbl VALUES ('0123456789abcdefF');
CREATE INDEX sp_suff_ind ON suffix_text_tbl USING spgist (t);
--
-- Test GiST and SP-GiST indexes
--
-- get non-indexed results for comparison purposes
SET enable_seqscan = ON;
@@ -142,9 +172,50 @@ SELECT * FROM point_tbl WHERE f1 IS NOT NULL ORDER BY f1 <-> '0,1';
SELECT * FROM point_tbl WHERE f1 <@ '(-10,-10),(10,10)':: box ORDER BY f1 <-> '0,1';
SELECT count(*) FROM quad_point_tbl WHERE p <@ box '(200,200,1000,1000)';
SELECT count(*) FROM quad_point_tbl WHERE box '(200,200,1000,1000)' @> p;
SELECT count(*) FROM quad_point_tbl WHERE p << '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >> '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p <^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p ~= '(4585, 365)';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdef';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcde';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdefF';
SELECT count(*) FROM suffix_text_tbl WHERE t < 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t <= 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<=~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t >= 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>=~ 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t > 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>~ 'Worth St ';
-- Now check the results from plain indexscan
SET enable_seqscan = OFF;
SET enable_indexscan = ON;
SET enable_bitmapscan = ON;
SET enable_bitmapscan = OFF;
EXPLAIN (COSTS OFF)
SELECT * FROM fast_emp4000
@@ -234,6 +305,115 @@ EXPLAIN (COSTS OFF)
SELECT * FROM point_tbl WHERE f1 <@ '(-10,-10),(10,10)':: box ORDER BY f1 <-> '0,1';
SELECT * FROM point_tbl WHERE f1 <@ '(-10,-10),(10,10)':: box ORDER BY f1 <-> '0,1';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p <@ box '(200,200,1000,1000)';
SELECT count(*) FROM quad_point_tbl WHERE p <@ box '(200,200,1000,1000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE box '(200,200,1000,1000)' @> p;
SELECT count(*) FROM quad_point_tbl WHERE box '(200,200,1000,1000)' @> p;
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p << '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p << '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p >> '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >> '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p <^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p <^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p >^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p ~= '(4585, 365)';
SELECT count(*) FROM quad_point_tbl WHERE p ~= '(4585, 365)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p <@ box '(200,200,1000,1000)';
SELECT count(*) FROM kd_point_tbl WHERE p <@ box '(200,200,1000,1000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE box '(200,200,1000,1000)' @> p;
SELECT count(*) FROM kd_point_tbl WHERE box '(200,200,1000,1000)' @> p;
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p << '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p << '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p >> '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p >> '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p <^ '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p <^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p >^ '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p >^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p ~= '(4585, 365)';
SELECT count(*) FROM kd_point_tbl WHERE p ~= '(4585, 365)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdef';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdef';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcde';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcde';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdefF';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdefF';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t < 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t < 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~<~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<~ 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t <= 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t <= 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~<=~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<=~ 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t >= 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t >= 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~>=~ 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>=~ 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t > 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t > 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~>~ 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>~ 'Worth St ';
-- Now check the results from bitmap indexscan
SET enable_seqscan = OFF;
SET enable_indexscan = OFF;
SET enable_bitmapscan = ON;
@@ -242,6 +422,114 @@ EXPLAIN (COSTS OFF)
SELECT * FROM point_tbl WHERE f1 <@ '(-10,-10),(10,10)':: box ORDER BY f1 <-> '0,1';
SELECT * FROM point_tbl WHERE f1 <@ '(-10,-10),(10,10)':: box ORDER BY f1 <-> '0,1';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p <@ box '(200,200,1000,1000)';
SELECT count(*) FROM quad_point_tbl WHERE p <@ box '(200,200,1000,1000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE box '(200,200,1000,1000)' @> p;
SELECT count(*) FROM quad_point_tbl WHERE box '(200,200,1000,1000)' @> p;
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p << '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p << '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p >> '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >> '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p <^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p <^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p >^ '(5000, 4000)';
SELECT count(*) FROM quad_point_tbl WHERE p >^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM quad_point_tbl WHERE p ~= '(4585, 365)';
SELECT count(*) FROM quad_point_tbl WHERE p ~= '(4585, 365)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p <@ box '(200,200,1000,1000)';
SELECT count(*) FROM kd_point_tbl WHERE p <@ box '(200,200,1000,1000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE box '(200,200,1000,1000)' @> p;
SELECT count(*) FROM kd_point_tbl WHERE box '(200,200,1000,1000)' @> p;
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p << '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p << '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p >> '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p >> '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p <^ '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p <^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p >^ '(5000, 4000)';
SELECT count(*) FROM kd_point_tbl WHERE p >^ '(5000, 4000)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM kd_point_tbl WHERE p ~= '(4585, 365)';
SELECT count(*) FROM kd_point_tbl WHERE p ~= '(4585, 365)';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdef';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdef';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcde';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcde';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdefF';
SELECT count(*) FROM suffix_text_tbl WHERE t = '0123456789abcdefF';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t < 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t < 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~<~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<~ 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t <= 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t <= 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~<=~ 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~<=~ 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Aztec Ct ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Aztec Ct ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t = 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t >= 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t >= 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~>=~ 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>=~ 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t > 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t > 'Worth St ';
EXPLAIN (COSTS OFF)
SELECT count(*) FROM suffix_text_tbl WHERE t ~>~ 'Worth St ';
SELECT count(*) FROM suffix_text_tbl WHERE t ~>~ 'Worth St ';
RESET enable_seqscan;
RESET enable_indexscan;
RESET enable_bitmapscan;