create table t1 (c1 int, c2 geometry not null, spatial index (c2))engine=innodb ROW_FORMAT=COMPRESSED;
insert into t1 values(1, Point(1,1));
insert into t1 values(2, Point(2,2));
insert into t1 values(3, Point(3,3));
insert into t1 values(4, Point(4,4));
insert into t1 values(5, Point(5,5));
insert into t1 values(6, Point(6,6));
insert into t1 values(7, Point(7,7));
insert into t1 values(8, Point(8,8));
insert into t1 values(9, Point(9,9));
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
insert into t1 select * from t1;
start transaction;
insert into t1 select * from t1;
select count(*) from t1;
count(*)
18432
rollback;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
select count(*) from t1;
count(*)
9216
set @g1 = ST_GeomFromText('Polygon((0 0,0 100,100 100,100 0,0 0))');
select count(*) from t1 where MBRWithin(t1.c2, @g1);
count(*)
9216
set @g1 = ST_GeomFromText('Polygon((10 10,10 800,800 800,800 10,10 10))');
select count(*) from t1 where MBRWithin(t1.c2, @g1);
count(*)
0
SET @saved_dbug = @@SESSION.debug_dbug;
SET DEBUG='+d,page_copy_rec_list_start_compress_fail';
Warnings:
Warning	1287	'@@debug' is deprecated and will be removed in a future release. Please use '@@debug_dbug' instead
delete from t1;
select count(*) from t1 where MBRWithin(t1.c2, @g1);
count(*)
0
SET debug_dbug = @saved_dbug;
InnoDB		0 transactions not purged
drop table t1;