1create table bug47777(c2 linestring not null, primary key (c2(1))) engine=innodb; 2insert into bug47777 values (geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)')); 3select count(*) from bug47777 where c2 =geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)'); 4count(*) 51 6update bug47777 set c2=GeomFromText('linestring(1 1)'); 7select count(*) from bug47777 where c2 =geomfromtext('linestring(1 2,3 4,5 6,7 8,9 10)'); 8count(*) 90 10select count(*) from bug47777 where c2 = GeomFromText('linestring(1 1)'); 11count(*) 121 13drop table bug47777; 14