Database Error; SQL: SELECT
DISTINCT
`t`.*
FROM `wp_posts` AS `t`
LEFT JOIN `wp_postmeta` AS `discipline` ON
`discipline`.`meta_key` = 'discipline'
AND `discipline`.`post_id` = `t`.`ID`
WHERE ( ( t.post_title LIKE "%%" OR `discipline`.`meta_value` LIKE "%%" ) AND ( `t`.`post_type` = 'athletes' ) AND ( `t`.`post_status` IN ( 'publish' ) ) ) AND ( `t`.`nationality` = 'Mexican' OR `t`.`nationality` LIKE '%"Mexican"%' )
ORDER BY `t`.`menu_order` ASC, `t`.`menu_order`, `t`.`post_title`, `t`.`post_date`
LIMIT 0, 20; Response: Unknown column 't.nationality' in 'where clause' 
