Publications

Database Error; SQL: SELECT DISTINCT `t`.* FROM `wp_posts` AS `t` LEFT JOIN `wp_postmeta` AS `publication_date` ON `publication_date`.`meta_key` = 'publication_date' AND `publication_date`.`post_id` = `t`.`ID` WHERE ( ( publication_type = 'Conference Paper' ) AND ( `t`.`post_type` = "publication" ) AND ( `t`.`post_status` IN ( "publish" ) ) ) ORDER BY `publication_date`.`meta_value` DESC, `t`.`menu_order`, `t`.`post_title`, `t`.`post_date` LIMIT 0, 15; Response: Unknown column 'publication_type' in 'where clause'