MYSQL|count()函数使用条件分别统计

需求 SQL语句web select class1_id ,class1_name ,class2_id ,class2_name ,run_id ,count(run_id) as count_all#提交数 ,count(run_ok>0 or null) as count_done#处理数 ,count(run_ok=1 or null) as count1#合格数 ,count(run_o

>>阅读原文<<