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|
--
-- 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)');
INSERT INTO POLYGON_TBL(f1) VALUES ('(1,2),(3,4),(5,6),(7,8)');
INSERT INTO POLYGON_TBL(f1) VALUES ('(7,8),(5,6),(3,4),(1,2)'); -- Reverse
INSERT INTO POLYGON_TBL(f1) VALUES ('(1,2),(7,8),(5,6),(3,-4)');
-- 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 * FROM POLYGON_TBL;
f1
----------------------------
((2,0),(2,4),(0,0))
((3,1),(3,3),(1,0))
((1,2),(3,4),(5,6),(7,8))
((7,8),(5,6),(3,4),(1,2))
((1,2),(7,8),(5,6),(3,-4))
((0,0))
((0,1),(0,1))
(7 rows)
--
-- 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 TEMP 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 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)
-- test ORDER BY distance
SET enable_indexscan = ON;
SET enable_bitmapscan = OFF;
EXPLAIN (COSTS OFF)
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))';
QUERY PLAN
---------------------------------------------------------------------------------
WindowAgg
-> Index Scan using quad_poly_tbl_idx on quad_poly_tbl
Index Cond: (p <@ '((300,300),(400,600),(600,500),(700,200))'::polygon)
Order By: (p <-> '(123,456)'::point)
(4 rows)
CREATE TEMP TABLE quad_poly_tbl_ord_idx2 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))';
SELECT *
FROM quad_poly_tbl_ord_seq2 seq FULL JOIN quad_poly_tbl_ord_idx2 idx
ON seq.n = idx.n AND seq.id = idx.id AND
(seq.dist = idx.dist OR seq.dist IS NULL AND idx.dist IS NULL)
WHERE seq.id IS NULL OR idx.id IS NULL;
n | dist | id | n | dist | id
---+------+----+---+------+----
(0 rows)
RESET enable_seqscan;
RESET enable_indexscan;
RESET enable_bitmapscan;
|
