1 create table bug47777(c2 linestring not null, primary key (c2(1))) engine=innodb;
2 insert into bug47777 values (geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)'));
3 select count(*) from bug47777 where c2 =geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)');
6 update bug47777 set c2=GeomFromText('POINT(1 1)');
7 select count(*) from bug47777 where c2 =geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)');
10 select count(*) from bug47777 where c2 = GeomFromText('POINT(1 1)');