pagetriage_page_tags lacks a primary key
CREATE TABLE `pagetriage_page_tags` ( `ptrpt_page_id` int(10) unsigned NOT NULL, `ptrpt_tag_id` int(10) unsigned NOT NULL, `ptrpt_value` varbinary(255) NOT NULL, UNIQUE KEY `ptrpt_page_tag_id` (`ptrpt_page_id`,`ptrpt_tag_id`), KEY `ptrpt_tag_id_value` (`ptrpt_tag_id`,`ptrpt_value`) ) ENGINE=InnoDB DEFAULT CHARSET=binary