MYSQL|count()函数使用条件分别统计

需求

SQL语句

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_ok=2 or null) as count2#不合格数
from `class2`
join `class1` on class2_class1_id=class1_id
left join `run` on run_class2_id=class2_id and date(run_addtime) between '$s_date1' and '$s_date2'
group by class2_id
order by class1_id,class2_id

运行结果

扩展参考
生成需求中的表格
ThinkPHP表格动态rowspan