143 lines
5.1 KiB
SQL
143 lines
5.1 KiB
SQL
--
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-- POLYGON
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--
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-- polygon logic
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--
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CREATE TABLE POLYGON_TBL(f1 polygon);
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INSERT INTO POLYGON_TBL(f1) VALUES ('(2.0,0.0),(2.0,4.0),(0.0,0.0)');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(3.0,1.0),(3.0,3.0),(1.0,0.0)');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(1,2),(3,4),(5,6),(7,8)');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(7,8),(5,6),(3,4),(1,2)'); -- Reverse
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INSERT INTO POLYGON_TBL(f1) VALUES ('(1,2),(7,8),(5,6),(3,-4)');
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-- degenerate polygons
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INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,0.0)');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,1.0),(0.0,1.0)');
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-- bad polygon input strings
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INSERT INTO POLYGON_TBL(f1) VALUES ('0.0');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0 0.0');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2)');
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INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2,3');
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INSERT INTO POLYGON_TBL(f1) VALUES ('asdf');
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SELECT '' AS four, * FROM POLYGON_TBL;
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--
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-- Test the SP-GiST index
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--
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CREATE TABLE quad_poly_tbl (id int, p polygon);
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INSERT INTO quad_poly_tbl
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SELECT (x - 1) * 100 + y, polygon(circle(point(x * 10, y * 10), 1 + (x + y) % 10))
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FROM generate_series(1, 100) x,
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generate_series(1, 100) y;
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INSERT INTO quad_poly_tbl
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SELECT i, polygon '((200, 300),(210, 310),(230, 290))'
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FROM generate_series(10001, 11000) AS i;
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INSERT INTO quad_poly_tbl
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VALUES
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(11001, NULL),
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(11002, NULL),
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(11003, NULL);
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CREATE INDEX quad_poly_tbl_idx ON quad_poly_tbl USING spgist(p);
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-- get reference results for ORDER BY distance from seq scan
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SET enable_seqscan = ON;
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SET enable_indexscan = OFF;
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SET enable_bitmapscan = OFF;
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CREATE TEMP TABLE quad_poly_tbl_ord_seq2 AS
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SELECT rank() OVER (ORDER BY p <-> point '123,456') n, p <-> point '123,456' dist, id
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FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))';
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-- check results from index scan
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SET enable_seqscan = OFF;
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SET enable_indexscan = OFF;
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SET enable_bitmapscan = ON;
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p << polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p << polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p &< polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p &< polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p && polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p && polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p &> polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p &> polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p >> polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p >> polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p <<| polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p <<| polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p &<| polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p &<| polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p |&> polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p |&> polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p |>> polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p |>> polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT count(*) FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p @> polygon '((340,550),(343,552),(341,553))';
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SELECT count(*) FROM quad_poly_tbl WHERE p @> polygon '((340,550),(343,552),(341,553))';
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM quad_poly_tbl WHERE p ~= polygon '((200, 300),(210, 310),(230, 290))';
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SELECT count(*) FROM quad_poly_tbl WHERE p ~= polygon '((200, 300),(210, 310),(230, 290))';
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-- test ORDER BY distance
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SET enable_indexscan = ON;
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SET enable_bitmapscan = OFF;
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EXPLAIN (COSTS OFF)
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SELECT rank() OVER (ORDER BY p <-> point '123,456') n, p <-> point '123,456' dist, id
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FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))';
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CREATE TEMP TABLE quad_poly_tbl_ord_idx2 AS
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SELECT rank() OVER (ORDER BY p <-> point '123,456') n, p <-> point '123,456' dist, id
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FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))';
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SELECT *
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FROM quad_poly_tbl_ord_seq2 seq FULL JOIN quad_poly_tbl_ord_idx2 idx
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ON seq.n = idx.n AND seq.id = idx.id AND
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(seq.dist = idx.dist OR seq.dist IS NULL AND idx.dist IS NULL)
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WHERE seq.id IS NULL OR idx.id IS NULL;
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RESET enable_seqscan;
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RESET enable_indexscan;
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RESET enable_bitmapscan;
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