On 10/28/2010 03:34 PM, misiaQ wrote:
Works fine on 5.0.87 (rows returned as expected).
Confirmed on 5.1.51-log.
Most likely problem with VARCHAR behavior, because this one works fine:
select * from test_nkomp_admin where host_id=6 and trim(admin_id)='luke';
The thing with the varchar was also my first guess, what could be wrong
after dumping the database.
So I tested it like this (just to be sure not having whitespaces in the
data):
mysql> select * into outfile "/tmp/out.txt" fields enclosed by "'" from
test_nkomp_admin where host_id=6;
Query OK, 2 rows affected (0.00 sec)
shell> cat /tmp/out.txt
'6' 'luke'
'6' 'yoda'
yes, this one works also for me.
And this one:
mysql> select * from test_nkomp_admin where host_id=6 and admin_id like
'luke%';
+---------+----------+
| host_id | admin_id |
+---------+----------+
| 6 | luke |
+---------+----------+
1 row in set (0.00 sec)
And this one:
mysql> select * from test_nkomp_admin where host_id=6 and admin_id like
'%luke';
+---------+----------+
| host_id | admin_id |
+---------+----------+
| 6 | luke |
+---------+----------+
1 row in set (0.00 sec)
But not this one:
mysql> select * from test_nkomp_admin where host_id=6 and admin_id like
'luke';
Empty set (0.00 sec)
So I guess, I should bag a bugreport ...
cheers
gregor
Regards,
m
-----Original Message-----
From: gregor kling [mailto:gregor.kl...@dvz.fh-giessen.de]
Sent: Thursday, October 28, 2010 1:54 PM
To: mysql@lists.mysql.com
Subject: strange behavior in mysql-server 5.1.49 and 5.1.51
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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