mysql根據出生日期統計年齡段
阿新 • • 發佈：2019-01-28
select nnd as '年齡段',count(*) as '人數' from(
select
case
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<20 then '20以下'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=20 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<30 then '20-30'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=30 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<40 then '30-40'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=40 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<50 then '40-50'
end
as nnd from td_lz_leader
)a group by nnd;
select
case
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<20 then '20以下'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=20 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<30 then '20-30'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=30 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<40 then '30-40'
when (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )>=40 and (year(now())-year(birthday)-1) + ( DATE_FORMAT(birthday, '%m%d') <= DATE_FORMAT(NOW(), '%m%d') )<50 then '40-50'
end
as nnd from td_lz_leader
)a group by nnd;