Database error...
SELECT
count( DISTINCT `competitions_membership`.`id` ) as `count`
FROM
`competitions_membership`
JOIN `competitions_cats` ON `competitions_cats`.`id` = `competitions_membership`.`id_category`
JOIN `disciplines` ON `disciplines`.`id` = `competitions_cats`.`id_discipline`
JOIN `sportsmen_competition` s ON s.`id` = `competitions_membership`.`id_sportsmen`
LEFT JOIN `geo_countries` ON `geo_countries`.`id` = s.`id_country`
LEFT JOIN `geo_provinces` ON `geo_provinces`.`id` = s.`id_province`
WHERE
`competitions_membership`.`id_trainer` =