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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=latin1
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)
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=latin1
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)
DROP TABLE t1;
End of 5.5 tests.
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