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create table t1 (i int, i2 char(10), g geometry not null, primary key (i, i2), spatial index (g))engine=innodb;
insert into t1 values (1, "111", POINT(1,1));
insert into t1 values (2, "222", POINT(1.5,1.5));
insert into t1 values (3, "333", POINT(3,3));
insert into t1 values (4, "444", POINT(3.1,3.1));
insert into t1 values (5, "555", POINT(5,5));
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
set @g1 = ST_GeomFromText('Polygon((0 0,0 3,3 3,3 0,0 0))');
explain select ST_astext(t1.g) from t1 where MBRWithin(t1.g, @g1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range g g 34 NULL 5 Using where
select ST_astext(t1.g) from t1 where MBRWithin(t1.g, @g1);
ST_astext(t1.g)
POINT(1.5 1.5)
POINT(1 1)
set @g1 = ST_GeomFromText('Polygon((0 0,0 3,3 3,3 0,0 0))');
delete from t1 where MBRWithin(t1.g, @g1);
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select ST_astext(t1.g) from t1;
ST_astext(t1.g)
POINT(3 3)
POINT(3.1 3.1)
POINT(5 5)
set @g1 = ST_GeomFromText('Polygon((5 5,5 5,5 5,5 5,5 5))');
update t1 set g = POINT(2,2) where MBRWithin(t1.g, @g1);
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select ST_astext(t1.g) from t1;
ST_astext(t1.g)
POINT(3 3)
POINT(3.1 3.1)
POINT(2 2)
show indexes from t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Ignored
t1 0 PRIMARY 1 i A # NULL NULL BTREE NO
t1 0 PRIMARY 2 i2 A # NULL NULL BTREE NO
t1 1 g 1 g A # 32 NULL SPATIAL NO
drop table t1;
create table t1 (name VARCHAR(100), square GEOMETRY not null, spatial index (square))engine=innodb;
INSERT INTO t1 VALUES("small", ST_GeomFromText('POLYGON (( 0 0, 0 1, 1 1, 1 0, 0 0))'));
INSERT INTO t1 VALUES("big", ST_GeomFromText('POLYGON (( 0 0, 0 3, 3 3, 3 0, 0 0))'));
INSERT INTO t1 VALUES("up", ST_GeomFromText('POLYGON (( 0 1, 0 3, 2 3, 2 1, 0 1))'));
INSERT INTO t1 VALUES("up2", ST_GeomFromText('POLYGON (( 0 2, 0 4, 2 4, 2 2, 0 2))'));
INSERT INTO t1 VALUES("up3", ST_GeomFromText('POLYGON (( 0 3, 0 5, 2 5, 2 3, 0 3))'));
INSERT INTO t1 VALUES("down", ST_GeomFromText('POLYGON (( 0 -1, 0 1, 2 1, 2 -1, 0 -1))'));
INSERT INTO t1 VALUES("down2", ST_GeomFromText('POLYGON (( 0 -2, 0 0, 2 0, 2 -2, 0 -2))'));
INSERT INTO t1 VALUES("down3", ST_GeomFromText('POLYGON (( 0 -3, 0 -1, 2 -1, 2 -3, 0 -3))'));
INSERT INTO t1 VALUES("right", ST_GeomFromText('POLYGON (( 1 0, 1 2, 3 2, 3 0, 1 0))'));
INSERT INTO t1 VALUES("right2", ST_GeomFromText('POLYGON (( 2 0, 2 2, 4 2, 4 0, 2 0))'));
INSERT INTO t1 VALUES("right3", ST_GeomFromText('POLYGON (( 3 0, 3 2, 5 2, 5 0, 3 0))'));
INSERT INTO t1 VALUES("left", ST_GeomFromText('POLYGON (( -1 0, -1 2, 1 2, 1 0, -1 0))'));
INSERT INTO t1 VALUES("left2", ST_GeomFromText('POLYGON (( -2 0, -2 2, 0 2, 0 0, -2 0))'));
INSERT INTO t1 VALUES("left3", ST_GeomFromText('POLYGON (( -3 0, -3 2, -1 2, -1 0, -3 0))'));
SET @p = ST_GeomFromText('POLYGON (( 0 0, 0 2, 2 2, 2 0, 0 0))');
SELECT name, ST_AsText(square) from t1 where MBRContains(@p, square);
name ST_AsText(square)
small POLYGON((0 0,0 1,1 1,1 0,0 0))
SELECT name, ST_AsText(square) from t1 where MBRDisjoint(@p, square);
name ST_AsText(square)
down3 POLYGON((0 -3,0 -1,2 -1,2 -3,0 -3))
left3 POLYGON((-3 0,-3 2,-1 2,-1 0,-3 0))
right3 POLYGON((3 0,3 2,5 2,5 0,3 0))
up3 POLYGON((0 3,0 5,2 5,2 3,0 3))
SELECT name, ST_AsText(square) from t1 where MBREquals(@p, square);
name ST_AsText(square)
SELECT name, ST_AsText(square) from t1 where MBRIntersects(@p, square);
name ST_AsText(square)
right2 POLYGON((2 0,2 2,4 2,4 0,2 0))
right POLYGON((1 0,1 2,3 2,3 0,1 0))
up2 POLYGON((0 2,0 4,2 4,2 2,0 2))
up POLYGON((0 1,0 3,2 3,2 1,0 1))
big POLYGON((0 0,0 3,3 3,3 0,0 0))
small POLYGON((0 0,0 1,1 1,1 0,0 0))
down POLYGON((0 -1,0 1,2 1,2 -1,0 -1))
down2 POLYGON((0 -2,0 0,2 0,2 -2,0 -2))
left POLYGON((-1 0,-1 2,1 2,1 0,-1 0))
left2 POLYGON((-2 0,-2 2,0 2,0 0,-2 0))
SELECT name, ST_AsText(square) from t1 where MBROverlaps(@p, square);
name ST_AsText(square)
right POLYGON((1 0,1 2,3 2,3 0,1 0))
up POLYGON((0 1,0 3,2 3,2 1,0 1))
down POLYGON((0 -1,0 1,2 1,2 -1,0 -1))
left POLYGON((-1 0,-1 2,1 2,1 0,-1 0))
SELECT name, ST_AsText(square) from t1 where MBRTouches(@p, square);
name ST_AsText(square)
right2 POLYGON((2 0,2 2,4 2,4 0,2 0))
up2 POLYGON((0 2,0 4,2 4,2 2,0 2))
down2 POLYGON((0 -2,0 0,2 0,2 -2,0 -2))
left2 POLYGON((-2 0,-2 2,0 2,0 0,-2 0))
SELECT name, ST_AsText(square) from t1 where MBRWithin(@p, square);
name ST_AsText(square)
big POLYGON((0 0,0 3,3 3,3 0,0 0))
SELECT GROUP_CONCAT(a1.name ORDER BY a1.name) AS MBRoverlaps FROM t1 a1 WHERE MBROverlaps(a1.square, @vert1) GROUP BY a1.name;
MBRoverlaps
SELECT GROUP_CONCAT(a1.name ORDER BY a1.name) AS MBRoverlaps FROM t1 a1 WHERE MBROverlaps(a1.square, @horiz1) GROUP BY a1.name;
MBRoverlaps
SELECT MBROverlaps(@horiz1, @vert1) FROM DUAL;
MBROverlaps(@horiz1, @vert1)
NULL
SELECT MBROverlaps(@horiz1, @horiz2) FROM DUAL;
MBROverlaps(@horiz1, @horiz2)
NULL
SELECT MBROverlaps(@horiz1, @horiz3) FROM DUAL;
MBROverlaps(@horiz1, @horiz3)
NULL
SELECT MBROverlaps(@horiz1, @point1) FROM DUAL;
MBROverlaps(@horiz1, @point1)
NULL
SELECT MBROverlaps(@horiz1, @point2) FROM DUAL;
MBROverlaps(@horiz1, @point2)
NULL
DROP TABLE t1;
create table t1 (i int not null, g geometry not null)engine=innodb;
insert into t1 values (1, POINT(1,1));
insert into t1 values (2, POINT(1.5,1.5));
insert into t1 values (3, POINT(3,3));
insert into t1 values (4, POINT(3.1,3.1));
insert into t1 values (5, POINT(5,5));
alter table t1 add primary key(i), algorithm=inplace;
alter table t1 drop primary key;
create spatial index idx on t1(g) algorithm=inplace;
create spatial index idx2 on t1(g);
Warnings:
Note 1831 Duplicate index `idx2`. This is deprecated and will be disallowed in a future release
alter table t1 add primary key(i), algorithm=inplace;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`i` int(11) NOT NULL,
`g` geometry NOT NULL,
PRIMARY KEY (`i`),
SPATIAL KEY `idx` (`g`),
SPATIAL KEY `idx2` (`g`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
drop index idx on t1;
drop table t1;
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