SQL语句按年龄段分组统计人数_MySQL

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SQL语句按年龄段分组统计人数

 

Java代码    

create table #t(Uname varchar(10),age int)  

insert #t  

select '啊啊',19 union all   

select '信息',23 union all    

select '宝宝',31 union all    

select '喔喔',21 union all    

select '米米',6   

select nnd as '年龄段',count(*) as '人数' from(  

 select   

 case  

  when age>=1 and age

  when age>=11 and age

  when age>=21 and age

  when age>=31 and age

 end   

 as nnd,uname from #t  

)a group by nnd
 

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