多个表条件查询数据，要求主表的数据不论其它表有没有关联数据都能显示

SELECT a.id,a.c_txt,count(c.wbcontent_id) as count,a.create_time,b.wb_name as typeName FROM wb_content a
Left Join wb_main b ON a.wb_id = b.wb_id
Left Join wb_content_hit c ON a.id = c.wbcontent_id
where c.hit_time>‘2020-05-05 08:57:41’ and c.state=1
GROUP BY a.id
order by count desc

把后面的where 改成and