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All the Perl that's Practical to Extract and Report

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More MySQL "fun" 5 Comments More | Login | Reply /

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  • BTW I tried to reproduce this and I cannot:

    mysql> show create table mail\G
    *************************** 1. row ***************************
    Table: mail
    Create Table: CREATE TABLE `mail` (
    `mail_id` int(11) unsigned NOT NULL auto_increment,
    `user` varchar(64) default NULL,
    `mail_type_id` int(10) unsigned NOT NULL,
    `domain_id` int(10) unsigned NOT NULL,
    PRIMARY KEY (`mail_id`),
    KEY `mail_type_id` (`mail_type_id`),
    KEY `domain_id` (`domain_id`,`user`)
    ) ENGINE=InnoDB AUTO_INCREMENT=25009 DEFAULT CHARSET=latin1
    1 row in set (0.00 sec)

    mysql> select * from mail;
    +---------+------+--------------+-----------+
    | mail_id | user | mail_type_id | domain_id |
    +---------+------+--------------+-----------+
    | 25006 | NULL | 6 | 28 |
    | 25008 | NULL | 6 | 3728 |
    +---------+------+--------------+-----------+
    2 rows in set (0.00 sec)

    mysql> select * from mail where mail_type_id = 6 and user = '';
    Empty set (0.00 sec)

    ilya@denmark:~$ mysql --version
    mysql Ver 14.12 Distrib 5.0.45, for pc-linux-gnu (i486) using readline 5.2

    Could it be you have a corrupted database? Have you tried 'REPAIR TABLE mail'?

    --

    Ilya Martynov (http://martynov.org/ [martynov.org])

    • It's certainly weird. The database is not corrupted - check table and even using the extended check it says all is ok.

      I can reproduce by the following:

      mysql> CREATE TABLE `foo` (
              -> `mail_id` int(11) unsigned NOT NULL auto_increment,
          `user` varchar(64) default NULL,
              -> `user` varchar(64) default NULL,
              -> `mail_type_id` int(10) unsigned NOT NULL,
              -> `domain_id`
      • Interesting. I tried exactly the same SQL statements and I get different result:

        mysql> CREATE TABLE `foo` (
            ->         `mail_id` int(11) unsigned NOT NULL auto_increment,
            ->         `user` varchar(64) default NULL,
            ->         `mail_type_id` int(10) unsigned NOT NULL,
            ->         `domain_id` int(10) unsigned NOT NULL,
            -> 

        --

        Ilya Martynov (http://martynov.org/ [martynov.org])

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