sql 计算年龄

SELECT pmi.patient_id,

pmi.name,

pmi.sex,

pmi.date_of_birth,

trunc(months_between(sysdate, pmi.date_of_birth) / 12) as age,

case

when floor(sysdate - pmi.date_of_birth) >= 365 then

concat(floor(months_between(sysdate, pmi.date_of_birth) / 12),

'岁')

when floor(sysdate - pmi.date_of_birth) < 365 and

floor(sysdate - pmi.date_of_birth) >= 30 then

concat(floor(months_between(sysdate, pmi.date_of_birth)), '月')

else

concat(floor(sysdate - pmi.date_of_birth), '天')

end as patient_age_desc

FROM pat_index pmi

order by pmi.create_date_time desc;