选择yearBrth，其中count（yearBrth）＆gt; 4

Question

如何从表列yearBrth中选择count（yearBrth）大于4（例如）

select 
    yearBrth
from 
    users 
where 
    count(yearBrth) > 4
-- group by yearBrth
;

Answer 1

使用having

select yearBrth
from users 
group by yearBrth having count(yearBrth) > 3