还是求sql语句啊，问题，还是没有搞定


如图，有三个表，a1，a2，c1

我希望通过sql语句，可以得到如表D1那样的结果，

后面的字段count是表示出现了几次的计数

[解决办法]

Java code

select Name,sum(case when id<5 then 1 else 0 end) as count1,sum(case when id>=5 and id<6 then 1 else 0 end) as count2,sum(case when id>6 then 1 else 0 end) as count3from tbgroup by name