stringsql=$@"select a.*,u.Name as UserName,u.Photo,b.Sex from RB_Miai_Activity a
stringsql=$@"select a.*,u.Name as UserName,u.Photo,b.Sex,IFNULL(d.DianZanNum,0) as DianZanNum from RB_Miai_Activity a
left join rb_member_user u on a.UserId =u.Id
left join rb_miai_baseinfo b on a.UserId =b.UserId
LEFT JOIN (SELECT ActivityId,COUNT(*) DianZanNum from rb_miai_dianzan where `Status`=0 and ActivityId>0 and ActivityDiscussId=0 GROUP BY ActivityId) as d on d.ActivityId=a.Id