1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
fid INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
g GEOMETRY NOT NULL,
SPATIAL KEY(g)
) ENGINE=MyISAM;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`fid` int(11) NOT NULL AUTO_INCREMENT,
`g` geometry NOT NULL,
PRIMARY KEY (`fid`),
SPATIAL KEY `g` (`g`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
SELECT count(*) FROM t1;
count(*)
150
EXPLAIN SELECT fid, AsText(g) FROM t1 WHERE ST_Within(g, GeomFromText('Polygon((140 140,160 140,160 160,140 140))'));
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range g g 34 NULL 8 Using where
SELECT fid, AsText(g) FROM t1 WHERE ST_Within(g, GeomFromText('Polygon((140 140,160 140,160 160,140 160,140 140))'));
fid AsText(g)
1 LINESTRING(150 150,150 150)
3 LINESTRING(148 148,152 152)
4 LINESTRING(147 147,153 153)
5 LINESTRING(146 146,154 154)
6 LINESTRING(145 145,155 155)
7 LINESTRING(144 144,156 156)
8 LINESTRING(143 143,157 157)
9 LINESTRING(142 142,158 158)
10 LINESTRING(141 141,159 159)
11 LINESTRING(140 140,160 160)
2 LINESTRING(149 149,151 151)
DROP TABLE t1;
CREATE TABLE t1 (
fid INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
g GEOMETRY NOT NULL
) ENGINE=MyISAM;
ALTER TABLE t1 ADD SPATIAL KEY(g);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`fid` int(11) NOT NULL AUTO_INCREMENT,
`g` geometry NOT NULL,
PRIMARY KEY (`fid`),
SPATIAL KEY `g` (`g`)
) ENGINE=MyISAM AUTO_INCREMENT=101 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
SELECT count(*) FROM t1;
count(*)
100
EXPLAIN SELECT fid, AsText(g) FROM t1 WHERE ST_Within(g,
GeomFromText('Polygon((40 40,60 40,60 60,40 40))'));
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range g g 34 NULL 4 Using where
SELECT fid, AsText(g) FROM t1 WHERE ST_Within(g,
GeomFromText('Polygon((40 40,60 40,60 60,40 40))'));
fid AsText(g)
46 LINESTRING(51 41,60 50)
56 LINESTRING(41 41,50 50)
45 LINESTRING(51 51,60 60)
DROP TABLE t1;
End of 5.5 tests.
CREATE TABLE t1 (
coordinate point NOT NULL,
SPATIAL KEY coordinate (coordinate)
) ENGINE=Aria DEFAULT CHARSET=ascii PAGE_CHECKSUM=1;
SHOW COLUMNS FROM t1;
Field Type Null Key Default Extra
coordinate point NO MUL NULL
INSERT INTO t1 (coordinate) VALUES(ST_PointFromText("POINT(0 0)"));
INSERT INTO t1 (coordinate) VALUES(ST_PointFromText("POINT(10 0)"));
INSERT INTO t1 (coordinate) VALUES(ST_PointFromText("POINT(10 10)"));
INSERT INTO t1 (coordinate) VALUES(ST_PointFromText("POINT(0 10)"));
INSERT INTO t1 (coordinate) VALUES(ST_PointFromText("POINT(5 5)"));
SELECT astext(coordinate) FROM t1 WHERE ST_Intersects(ST_LineFromText("LINESTRING(0 0, 10 0, 10 10, 0 10)"), coordinate);
astext(coordinate)
POINT(0 0)
POINT(10 0)
POINT(10 10)
POINT(0 10)
SHOW COLUMNS FROM t1;
Field Type Null Key Default Extra
coordinate point NO MUL NULL
DROP TABLE t1;
|
