select sum(value) as value,case when age<3 then 0 when age <6 then 1 when age <8 then 2 when age <16 then 3 when age<31 then 4 else 5 end as name from (
select count(*) as value, datediff (res.end_time,res.create_time) as age from xm_question res
select sum(value) as value,case when age<3 then 0 when age <6 then 1 when age <8 then 2 when age <16 then 3 when age<31 then 4 else 5 end as name from (
select count(*) as value, datediff (res.end_time,res.start_time) as age from xm_task res