Internal error

A database error has occurred
Query: SELECT page_id,page_title,page_namespace,page_len,page_is_redirect,cl_sortkey,cat_id,cat_title,cat_subcats,cat_pages,cat_files,cl_sortkey_prefix FROM page INNER JOIN categorylinks ON ((cl_from = page_id)) LEFT JOIN category ON ((cat_title = page_title AND page_namespace = 14)) WHERE cl_to = 'EEG_Formats' AND cl_type = 'page' ORDER BY cl_sortkey LIMIT 201
Function: CategoryViewer::doCategoryQuery
Error: 1 ERROR: column "cl_sortkey_prefix" does not exist
LINE 1: ...,cat_id,cat_title,cat_subcats,cat_pages,cat_files,cl_sortkey...
^

Backtrace:

#0 /home/srv/mediawiki/mediawiki-trunk/includes/db/Database.php(534): DatabasePostgres->reportQueryError('ERROR: column ...', 1, 'SELECT page_id...', 'CategoryViewer:...', false)
#1 /home/srv/mediawiki/mediawiki-trunk/includes/db/Database.php(833): DatabaseBase->query('SELECT page_id...', 'CategoryViewer:...')
#2 /home/srv/mediawiki/mediawiki-trunk/includes/CategoryPage.php(293): DatabaseBase->select(Array, Array, Array, 'CategoryViewer:...', Array, Array)
#3 /home/srv/mediawiki/mediawiki-trunk/includes/CategoryPage.php(111): CategoryViewer->doCategoryQuery()
#4 /home/srv/mediawiki/mediawiki-trunk/includes/CategoryPage.php(72): CategoryViewer->getHTML()
#5 /home/srv/mediawiki/mediawiki-trunk/includes/CategoryPage.php(39): CategoryPage->closeShowCategory()
#6 /home/srv/mediawiki/mediawiki-trunk/includes/Wiki.php(499): CategoryPage->view()
#7 /home/srv/mediawiki/mediawiki-trunk/includes/Wiki.php(69): MediaWiki->performAction(Object(OutputPage), Object(CategoryTreeCategoryPage), Object(Title), Object(User), Object(WebRequest))
#8 /home/srv/mediawiki/mediawiki-trunk/index.php(115): MediaWiki->performRequestForTitle(Object(Title), Object(CategoryTreeCategoryPage), Object(OutputPage), Object(User), Object(WebRequest))
#9 /home/srv/mediawiki/mediawiki-trunk/index.php5(1): require('/home/srv/media...')
#10 {main}