Hello list,
I fight a strange behavior in mysql versions 5.1.49 and 5.1.51 -
maybe a fight against myself ;-)
The following query works exactly as assumed in version 5.1.41 with
the given testbed:
select * from test_nkomp_admin where host_id=6 and admin_id="yoda";
/* version 5.1.41 ubuntu 10.04 */
mysql> select * from test_nkomp_admin where host_id=6 and
admin_id="yoda" ;
+---------+----------+
| host_id | admin_id |
+---------+----------+
| 6 | yoda |
+---------+----------+
1 row in set (0.00 sec)
whereas in versions 5.1.49 (ubuntu 10.10) and 5.1.51 (package from
debian experimental,os ubuntu 10.10) the resultset is:
mysql> select * from test_nkomp_admin where host_id=6 and
admin_id="yoda" ;
Empty set (0.00 sec)
prove:
select * from test_nkomp_admin where host_id=6 ;
+---------+----------+
| host_id | admin_id |
+---------+----------+
| 6 | luke |
| 6 | yoda |
+---------+----------+
2 rows in set (0.00 sec)
Could anyone prove this behavior, or can give hint what the problem
might be ?
/* testbed */
drop table if exists test_nkomp_admin;
drop table if exists test_nkomp;
drop table if exists test_admin;
create table test_nkomp
(
host_id int unsigned auto_increment not null primary key
)engine=innodb;
create table test_admin
(
admin_id varchar(15) not null primary key
)engine=innodb;
create table test_nkomp_admin
(
host_id int unsigned,
admin_id varchar(15),
foreign key (host_id) references test_nkomp (host_id) on delete
cascade on update cascade,
foreign key (admin_id) references test_admin (admin_id) on delete
cascade on update cascade
)engine=innodb;
insert into test_nkomp (host_id) values (1),(2),(3),(4),(5),(6);
insert into test_admin (admin_id) values
('luke'),('yoda'),('anakin'),('leia'),('r2'),('obi'),('han');
insert into test_nkomp_admin (host_id,admin_id) values
(1,'luke'),(1,'yoda'),(1,'anakin'),(1,'leia'),(1,'r2'),(1,'obi'),(1,'han');
insert into test_nkomp_admin (host_id,admin_id) values
(2,'luke'),(2,'yoda'),(2,'anakin'),(2,'leia'),(2,'r2'),(2,'obi');
insert into test_nkomp_admin (host_id,admin_id) values
(3,'luke'),(3,'yoda'),(3,'anakin'),(3,'leia'),(3,'r2');
insert into test_nkomp_admin (host_id,admin_id) values
(4,'luke'),(4,'yoda'),(4,'anakin'),(4,'leia');
insert into test_nkomp_admin (host_id,admin_id) values
(5,'luke'),(5,'yoda'),(5,'anakin');
insert into test_nkomp_admin (host_id,admin_id) values
(6,'luke'),(6,'yoda');
cheers
gregor
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