select pay_ability,concat(round(100*(over_num/(over_num+not_over_num)),1),"%") as "overdue_ratio" from( select mid_t1.pay_ability,over_num,not_over_num from( select pay_ability,coalesce(count(case when over_mark=1 then 1 end), 0) as "over_num" from( select pay_ability,...