SELECT t2.pay_ability, CONCAT(ROUND( COUNT( DISTINCT IF (t1.if_yuqi > 0, t1.customer_id, NULL) ) * 100.0 / COUNT(DISTINCT t1.customer_id),1),'%') AS overdue_ratio FROM ( SELECT customer_id, SUM(IF (overdue_days > 0, 1, 0)) AS if_yuqi FROM loan_tb GROUP BY customer_id ) t1 LEFT JOIN ( SELECT DI...