I had to repair some special characters by hand though. I couldn't do
the exporting, editing and importing thing since it resulted in a
"duplicate entry" error.

Thanks and cheers,

Till


On 9/22/2016 5:11 PM, Till Kraemer wrote:
> I'm sorry to hear that, Jasmine :( Maybe you can get help on Stack
> Overflow or Server Fault?
> 
> With the help of this article at
> https://confluence.atlassian.com/crowdkb/unable-to-perform-administrative-functions-in-crowd-console-due-to-error-illegal-mix-of-collations-179077288.html
> I entered:
> 
> SELECT * FROM information_schema.TABLES WHERE table_schema =
> 'centralauth' AND table_collation != 'utf8_bin';
> 
> ...and I noticed that most of the tables use engine MyISAM.
> 
> I changed that using ALTER TABLE globaluser ENGINE=INNODB; and then I
> was able to do things like:
> 
> ALTER TABLE globaluser CONVERT TO CHARACTER SET utf8 COLLATE utf8_bin;
> 
> Everything works perfectly now.
> 
> Have a nice evening!
> 
> Thanks and cheers,
> 
> Till
> 
> 
> On 9/22/2016 4:29 PM, Jasmine Smith wrote:
>> Sadly, there is virtually no help for CentralAuth. You'll likely get told to 
>> use a shared users table.
>>
>> I had an issue months ago that no one helped with.
>>
>>> On 22 Sep 2016, at 03:22 pm, "Till Kraemer" <i...@till-kraemer.com> wrote:
>>>
>>> P.S.: I also created the user User on the datawiki and tried to rename
>>> him to টিল via Special:RenameUser but that resulted in the same error :/
>>>
>>>
>>>> On 9/21/2016 5:33 PM, Till Kraemer wrote:
>>>> Hi,
>>>>
>>>> I'm running a little pool wiki for files, a data wiki for, well data,
>>>> and several language wikis (MediaWiki 1.27.1).
>>>>
>>>> Users টিল and Till have accounts on enwiki. I can create a local user
>>>> টিল on poolwiki via createLocalAccount.php with no problems. I also can
>>>> create a local user Till on datawiki without any trouble, but when I try
>>>> to create টিল on datawiki, I'm getting the following error:
>>>>
>>>> A database query error has occurred.
>>>> Query: SELECT
>>>> gu_id,gu_name,lu_wiki,gu_salt,gu_password,gu_auth_token,gu_locked,gu_hidden,gu_registration,gu_email,gu_email_authenticated,gu_home_db,gu_cas_token
>>>> FROM `globaluser` LEFT OUTER JOIN `localuser` ON ((gu_name=lu_name) AND
>>>> lu_wiki = 'datawiki')  WHERE gu_name = 'টিল'  LIMIT 1
>>>> Function: CentralAuthUser::loadState
>>>> Error: 1267 Illegal mix of collations (latin1_bin,IMPLICIT) and
>>>> (utf8_general_ci,COERCIBLE) for operation '=' (127.0.0.1)
>>>>
>>>> Table globaluser on database centralauth looks like this:
>>>>
>>>> | Field                        | Type             | Collation         |
>>>> +------------------------------+------------------+-------------------+
>>>> | gu_id                        | int(11)          | NULL              |
>>>> | gu_name                      | varchar(255)     | latin1_bin        |
>>>> | gu_enabled                   | varchar(14)      | latin1_swedish_ci |
>>>> | gu_enabled_method            | enum('opt-in',   | latin1_swedish_ci |
>>>> |                              |'batch','auto',   |                   |
>>>> |                              |'admin')          |                   |
>>>> | gu_home_db                   | varchar(255)     | latin1_bin        |
>>>> | gu_email                     | varchar(255)     | latin1_bin        |
>>>> | gu_email_authenticated       | char(14)         | latin1_bin        |
>>>> | gu_salt                      | varchar(16)      | latin1_bin        |
>>>> | gu_password                  | tinyblob         | NULL              |
>>>> | gu_locked                    | tinyint(1)       | NULL              |
>>>> | gu_hidden                    | varbinary(255)   | NULL              |
>>>> | gu_registration              | varchar(14)      | latin1_bin        |
>>>> | gu_password_reset_key        | tinyblob         | NULL              |
>>>> | gu_password_reset_expiration | varchar(14)      | latin1_bin        |
>>>> | gu_auth_token                | varbinary(32)    | NULL              |
>>>> | gu_cas_token                 | int(10) unsigned | NULL              |
>>>>
>>>> I tried to do things like ALTER TABLE `globaluser` MODIFY
>>>> `gu_password_reset_expiration` varchar(14) CHARACTER SET utf8 COLLATE
>>>> utf8_bin; but that doesn't work with gu_name:
>>>>
>>>> ERROR 1071 (42000): Specified key was too long; max key length is 1000 
>>>> bytes
>>>>
>>>> I can do gu_name varchar(200), but I'm probably not supposed to do that.
>>>>
>>>> I also can change gu_name varchar(255) to utf8_bin in a freshly created
>>>> centralauth database, but not in the one that is already populated with
>>>> my users.
>>>>
>>>> Exporting the old centralauth database, changing gu_name to utf8_bin in
>>>> an editor and importing it, doesn't work either: same error as mentioned
>>>> above.
>>>>
>>>> How can I fix this?
>>>>
>>>> I'm running MariaDB 10.0.25 which seem to use XtraDB by default. Would
>>>> it help to switch to InnoDB?
>>>>
>>>> And: my latest language wikis have $wgDBTableOptions = "ENGINE=InnoDB,
>>>> DEFAULT CHARSET=binary"; so I changed the old wikis from
>>>> $wgDBTableOptions   = "TYPE=InnoDB"; in LocalSettings.php to the
>>>> settings of the new wikis. I don't know if that's a problem.
>>>>
>>>> Aside from the problems mentioned above, should I change every database
>>>> and table of the old wikis from latin1_bin to utf8_bin, so that they are
>>>> in line with the new MediaWiki installations?
>>>>
>>>> Any help is more than welcome!
>>>>
>>>> Thanks and cheers,
>>>>
>>>> Till

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