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2b3c01bcdf
Closes #3591 Closes https://github.com/postgis/postgis/pull/106 git-svn-id: http://svn.osgeo.org/postgis/trunk@15029 b70326c6-7e19-0410-871a-916f4a2858ee
124 lines
4.2 KiB
PL/PgSQL
124 lines
4.2 KiB
PL/PgSQL
--- build a larger database
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\i regress_lots_of_3dpoints.sql
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--- test some of the searching capabilities
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CREATE OR REPLACE FUNCTION qnodes(q text) RETURNS text
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LANGUAGE 'plpgsql' AS
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$$
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DECLARE
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exp TEXT;
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mat TEXT[];
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ret TEXT[];
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BEGIN
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FOR exp IN EXECUTE 'EXPLAIN ' || q
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LOOP
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--RAISE NOTICE 'EXP: %', exp;
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mat := regexp_matches(exp, ' *(?:-> *)?(.*Scan)');
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--RAISE NOTICE 'MAT: %', mat;
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IF mat IS NOT NULL THEN
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ret := array_append(ret, mat[1]);
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END IF;
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--RAISE NOTICE 'RET: %', ret;
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END LOOP;
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RETURN array_to_string(ret,',');
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END;
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$$;
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-- BRIN indexes
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-- 2D
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CREATE INDEX brin_2d on test using brin (the_geom) WITH (pages_per_range = 10);
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set enable_indexscan = off;
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set enable_bitmapscan = off;
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set enable_seqscan = on;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom && ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom && 'BOX(125 125,126 126)'::box2d order by num;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE ST_MakePoint(0,0) ~ the_geom');
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SELECT num, ST_astext(the_geom) FROM test WHERE 'BOX(125 125,126 126)'::box2d ~ the_geom order by num;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom @ ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom @ 'BOX(125 125,126 126)'::box2d order by num;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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set enable_indexscan = off;
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set enable_bitmapscan = on;
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set enable_seqscan = off;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom && ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom && 'BOX(125 125,126 126)'::box2d order by num;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE ST_MakePoint(0,0) ~ the_geom');
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SELECT num, ST_astext(the_geom) FROM test WHERE 'BOX(125 125,126 126)'::box2d ~ the_geom order by num;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom @ ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom @ 'BOX(125 125,126 126)'::box2d order by num;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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DROP INDEX brin_2d;
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-- 3D
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CREATE INDEX brin_3d on test using brin (the_geom brin_geometry_inclusion_ops_3d) WITH (pages_per_range = 10);
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set enable_indexscan = off;
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set enable_bitmapscan = off;
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set enable_seqscan = on;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom &&& ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom &&& 'BOX3D(125 125 125,126 126 126)'::box3d order by num;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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set enable_indexscan = off;
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set enable_bitmapscan = on;
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set enable_seqscan = off;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom &&& ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom &&& 'BOX3D(125 125 125,126 126 126)'::box3d order by num;
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SELECT 'scan_idx', qnodes('select COUNT(num) FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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DROP INDEX brin_3d;
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-- 4D
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CREATE INDEX brin_4d on test using brin (the_geom brin_geometry_inclusion_ops_4d) WITH (pages_per_range = 10);
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set enable_indexscan = off;
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set enable_bitmapscan = off;
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set enable_seqscan = on;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom &&& ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom &&& 'BOX3D(125 125 125,126 126 126)'::box3d order by num;
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SELECT 'scan_seq', qnodes('SELECT * FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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set enable_indexscan = off;
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set enable_bitmapscan = on;
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set enable_seqscan = off;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom &&& ST_MakePoint(0,0)');
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SELECT num, ST_astext(the_geom) FROM test WHERE the_geom &&& 'BOX3D(125 125 125,126 126 126)'::box3d order by num;
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SELECT 'scan_idx', qnodes('SELECT * FROM test WHERE the_geom IS NULL');
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SELECT COUNT(num) FROM test WHERE the_geom IS NULL;
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DROP INDEX brin_4d;
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-- cleanup
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DROP TABLE test;
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DROP FUNCTION qnodes(text);
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set enable_indexscan = on;
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set enable_bitmapscan = on;
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set enable_seqscan = on;
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