摘要：
mysql count group by统计条数方法
mysql 分组之后如何统计记录条数? gourp by 之后的 count，把group by查询结果当成一个表再count一次
select count(*) as count from
(SELECT count(*) FROM 表名 WHERE 条件 GROUP BY id ) a;
实战例子：
select
count(*) as total
from (select count(*) from users group by user_id) u 阅读全文