Богуслав

SELECT DISTINCT a.id_cat, a.on_main, a.name_cat, a.comment_cat, a.link_cat, a.dt_begin FROM catalog AS a LEFT JOIN category_relation AS b ON (a.id_cat=b.id_obj) WHERE a.type_cat='object_halls_testing' AND a.visibility_cat='1' AND a.dt_begin < '2018-04-21 22' AND a.dt_end > '2018-04-21 22' AND a.rn_id=156 ORDER BY a.dt_begin DESC LIMIT 300