-- -- POLYGON -- -- polygon logic -- CREATE TABLE POLYGON_TBL(f1 polygon); INSERT INTO POLYGON_TBL(f1) VALUES ('(2.0,0.0),(2.0,4.0),(0.0,0.0)'); INSERT INTO POLYGON_TBL(f1) VALUES ('(3.0,1.0),(3.0,3.0),(1.0,0.0)'); -- degenerate polygons INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,0.0)'); INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,1.0),(0.0,1.0)'); -- bad polygon input strings INSERT INTO POLYGON_TBL(f1) VALUES ('0.0'); ERROR: invalid input syntax for type polygon: "0.0" LINE 1: INSERT INTO POLYGON_TBL(f1) VALUES ('0.0'); ^ INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0 0.0'); ERROR: invalid input syntax for type polygon: "(0.0 0.0" LINE 1: INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0 0.0'); ^ INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2)'); ERROR: invalid input syntax for type polygon: "(0,1,2)" LINE 1: INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2)'); ^ INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2,3'); ERROR: invalid input syntax for type polygon: "(0,1,2,3" LINE 1: INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2,3'); ^ INSERT INTO POLYGON_TBL(f1) VALUES ('asdf'); ERROR: invalid input syntax for type polygon: "asdf" LINE 1: INSERT INTO POLYGON_TBL(f1) VALUES ('asdf'); ^ SELECT '' AS four, * FROM POLYGON_TBL; four | f1 ------+--------------------- | ((2,0),(2,4),(0,0)) | ((3,1),(3,3),(1,0)) | ((0,0)) | ((0,1),(0,1)) (4 rows) -- overlap SELECT '' AS three, p.* FROM POLYGON_TBL p WHERE p.f1 && '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; three | f1 -------+--------------------- | ((2,0),(2,4),(0,0)) | ((3,1),(3,3),(1,0)) (2 rows) -- left overlap SELECT '' AS four, p.* FROM POLYGON_TBL p WHERE p.f1 &< '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; four | f1 ------+--------------------- | ((2,0),(2,4),(0,0)) | ((3,1),(3,3),(1,0)) | ((0,0)) | ((0,1),(0,1)) (4 rows) -- right overlap SELECT '' AS two, p.* FROM POLYGON_TBL p WHERE p.f1 &> '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; two | f1 -----+--------------------- | ((3,1),(3,3),(1,0)) (1 row) -- left of SELECT '' AS one, p.* FROM POLYGON_TBL p WHERE p.f1 << '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; one | f1 -----+--------------- | ((0,0)) | ((0,1),(0,1)) (2 rows) -- right of SELECT '' AS zero, p.* FROM POLYGON_TBL p WHERE p.f1 >> '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; zero | f1 ------+---- (0 rows) -- contained SELECT '' AS one, p.* FROM POLYGON_TBL p WHERE p.f1 <@ polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; one | f1 -----+--------------------- | ((3,1),(3,3),(1,0)) (1 row) -- same SELECT '' AS one, p.* FROM POLYGON_TBL p WHERE p.f1 ~= polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; one | f1 -----+--------------------- | ((3,1),(3,3),(1,0)) (1 row) -- contains SELECT '' AS one, p.* FROM POLYGON_TBL p WHERE p.f1 @> polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)'; one | f1 -----+--------------------- | ((3,1),(3,3),(1,0)) (1 row) -- -- polygon logic -- -- left of SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' << polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) -- left overlap SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' << polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS true; true ------ f (1 row) -- right overlap SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' &> polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) -- right of SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' >> polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) -- contained in SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' <@ polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) -- contains SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' @> polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) SELECT '((0,4),(6,4),(1,2),(6,0),(0,0))'::polygon @> '((2,1),(2,3),(3,3),(3,1))'::polygon AS "false"; false ------- f (1 row) SELECT '((0,4),(6,4),(3,2),(6,0),(0,0))'::polygon @> '((2,1),(2,3),(3,3),(3,1))'::polygon AS "true"; true ------ t (1 row) SELECT '((1,1),(1,4),(5,4),(5,3),(2,3),(2,2),(5,2),(5,1))'::polygon @> '((3,2),(3,3),(4,3),(4,2))'::polygon AS "false"; false ------- f (1 row) SELECT '((0,0),(0,3),(3,3),(3,0))'::polygon @> '((2,1),(2,2),(3,2),(3,1))'::polygon AS "true"; true ------ t (1 row) -- same SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' ~= polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS false; false ------- f (1 row) -- overlap SELECT polygon '(2.0,0.0),(2.0,4.0),(0.0,0.0)' && polygon '(3.0,1.0),(3.0,3.0),(1.0,0.0)' AS true; true ------ t (1 row) SELECT '((0,4),(6,4),(1,2),(6,0),(0,0))'::polygon && '((2,1),(2,3),(3,3),(3,1))'::polygon AS "true"; true ------ t (1 row) SELECT '((1,4),(1,1),(4,1),(4,2),(2,2),(2,4),(1,4))'::polygon && '((3,3),(4,3),(4,4),(3,4),(3,3))'::polygon AS "false"; false ------- f (1 row) SELECT '((200,800),(800,800),(800,200),(200,200))' && '(1000,1000,0,0)'::polygon AS "true"; true ------ t (1 row) -- distance from a point SELECT '(0,0)'::point <-> '((0,0),(1,2),(2,1))'::polygon as on_corner, '(1,1)'::point <-> '((0,0),(2,2),(1,3))'::polygon as on_segment, '(2,2)'::point <-> '((0,0),(1,4),(3,1))'::polygon as inside, '(3,3)'::point <-> '((0,2),(2,0),(2,2))'::polygon as near_corner, '(4,4)'::point <-> '((0,0),(0,3),(4,0))'::polygon as near_segment; on_corner | on_segment | inside | near_corner | near_segment -----------+------------+--------+-----------------+-------------- 0 | 0 | 0 | 1.4142135623731 | 3.2 (1 row) -- -- Test the SP-GiST index -- CREATE TABLE quad_poly_tbl (id int, p polygon); INSERT INTO quad_poly_tbl SELECT (x - 1) * 100 + y, polygon(circle(point(x * 10, y * 10), 1 + (x + y) % 10)) FROM generate_series(1, 100) x, generate_series(1, 100) y; INSERT INTO quad_poly_tbl SELECT i, polygon '((200, 300),(210, 310),(230, 290))' FROM generate_series(10001, 11000) AS i; INSERT INTO quad_poly_tbl VALUES (11001, NULL), (11002, NULL), (11003, NULL); CREATE INDEX quad_poly_tbl_idx ON quad_poly_tbl USING spgist(p); -- get reference results for ORDER BY distance from seq scan SET enable_seqscan = ON; SET enable_indexscan = OFF; SET enable_bitmapscan = OFF; CREATE TABLE quad_poly_tbl_ord_seq1 AS SELECT rank() OVER (ORDER BY p <-> point '123,456') n, p <-> point '123,456' dist, id FROM quad_poly_tbl; CREATE TABLE quad_poly_tbl_ord_seq2 AS SELECT rank() OVER (ORDER BY p <-> point '123,456') n, p <-> point '123,456' dist, id FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))'; -- check results results from index scan SET enable_seqscan = OFF; SET enable_indexscan = OFF; SET enable_bitmapscan = ON; EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p << polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p << '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p << '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p << polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 3890 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p &< polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p &< '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p &< '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p &< polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 7900 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p && polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p && '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p && '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p && polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 977 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p &> polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p &> '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p &> '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p &> polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 7000 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p >> polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p >> '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p >> '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p >> polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 2990 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p <<| polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN ---------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p <<| '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p <<| '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p <<| polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 1890 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p &<| polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN ---------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p &<| '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p &<| '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p &<| polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 6900 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p |&> polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN ---------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p |&> '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p |&> '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p |&> polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 9000 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p |>> polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN ---------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p |>> '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p |>> '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p |>> polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 3990 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))'; QUERY PLAN --------------------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p <@ '((300,300),(400,600),(600,500),(700,200))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p <@ '((300,300),(400,600),(600,500),(700,200))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p <@ polygon '((300,300),(400,600),(600,500),(700,200))'; count ------- 831 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p @> polygon '((340,550),(343,552),(341,553))'; QUERY PLAN ----------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p @> '((340,550),(343,552),(341,553))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p @> '((340,550),(343,552),(341,553))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p @> polygon '((340,550),(343,552),(341,553))'; count ------- 1 (1 row) EXPLAIN (COSTS OFF) SELECT count(*) FROM quad_poly_tbl WHERE p ~= polygon '((200, 300),(210, 310),(230, 290))'; QUERY PLAN ----------------------------------------------------------------------------- Aggregate -> Bitmap Heap Scan on quad_poly_tbl Recheck Cond: (p ~= '((200,300),(210,310),(230,290))'::polygon) -> Bitmap Index Scan on quad_poly_tbl_idx Index Cond: (p ~= '((200,300),(210,310),(230,290))'::polygon) (5 rows) SELECT count(*) FROM quad_poly_tbl WHERE p ~= polygon '((200, 300),(210, 310),(230, 290))'; count ------- 1000 (1 row) RESET enable_seqscan; RESET enable_indexscan; RESET enable_bitmapscan;