oracle sql 分组查询
发布网友
发布时间：2022-04-22 04:43
共1个回答
热心网友
时间：2022-04-08 01:17
select (select count(a) from test02 where a>500 and a<=1000) s1,
(select count(a) from test02 where a>300 and a<=500) s2,
(select count(a) from test02 where a<=300) s3
from al;
