On ArchWiki, specifying rdnamespace to any value (for example [this query](https://wiki.archlinux.org/api.php?action=query&titles=Main%20page&prop=redirects&rdnamespace=0)) results in internal database query error:
{
"error": {
"code": "internal_api_error_DBQueryError",
"info": "[e0c8b223] Database query error"
}
}
I've been able to reproduce this on localhost on my testing wiki by simply upgrading from 1.22 to 1.25 (ArchWiki upgraded to 1.25 from 1.23). With `$wgShowSQLErrors = true;` the info is the following:
Exception Caught: A database error has occurred. Did you forget to run maintenance/update.php after upgrading? See: https://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script
Query: SELECT rd_from,rd_namespace AS bl_namespace,rd_title AS bl_title,page_id,page_title,page_namespace FROM `redirect`,`page` WHERE rd_from_namespace = '0' AND (rd_from = page_id) AND (rd_interwiki = '' OR rd_interwiki IS NULL) AND ((rd_namespace = '0' AND rd_title = 'Main_page')) ORDER BY rd_from LIMIT 11
Function: ApiQueryBacklinksprop::run
Error: 1054 Unknown column 'rd_from_namespace' in 'where clause' (localhost)
The update script has been run after the upgrade (running it again does not help).