--source include/have_innodb.inc set session transaction isolation level read committed; create table innodb_bug52663 (what varchar(5), id integer, count integer, primary key (what, id)) engine=innodb; insert into innodb_bug52663 values ('total', 0, 0); begin; connect (addconroot, localhost, root,,); connection addconroot; set session transaction isolation level read committed; begin; connection default; update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0; select * from innodb_bug52663; connection addconroot; --error ER_LOCK_WAIT_TIMEOUT update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0; select * from innodb_bug52663; connection default; commit; connection addconroot; update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0; commit; select * from innodb_bug52663; connection default; select * from innodb_bug52663; drop table innodb_bug52663;