select c.id ,c.title ,ct.title as sub_title ,case when c.start_date is NULL or c.start_date="0000-00-00 00:00:00" then now() else c.start_date end as start_date ,case when c.end_date is NULL or c.end_date="0000-00-00 00:00:00" then now() else c.end_date end as end_date ,case when c.start_date is NULL or c.start_date="0000-00-00 00:00:00" then 1 else 0 end as start_is_null ,case when c.end_date is NULL or c.end_date="0000-00-00 00:00:00" then 1 else 0 end as end_is_null ,DATE_FORMAT(now(),"%Y%m%d") = DATE_FORMAT(c.start_date,"%Y%m%d") as is_show_now ,published ,c.full_content from systems_contents sc left join contents c on c.id = sc.contents_id left join contents_type ct on ct.type_id="0" where sc.systems_id="4" and c.calendar_show="1" -- and (c.end_date >= now() or c.end_date is NULL or c.end_date="0000-00-00 00:00:00") and (c.end_date >= now()) and c.end_date <= CURDATE() + INTERVAL 1 YEAR and c.published = 1 order by start_date limit 10
rec is 0