问题 mysql中
想按天统计当日用户做到这种结果
而我却是
select register_time as'日期',
count(DISTINCT user_id)
from 2tap_fun_test
GROUP BY
register_time

select substr(register_time,1,8) as'日期',count(*) from 2tap_fun_test
GROUP BY substr(register_time,1,8)

select date(register_time)'日期',count(user_id) '新增人数' from table group date(register_time)