平面设计和建设网站的区别,建设商务网站需要哪些步骤,百度商店应用市场,响应式旅游网站模板此图关键在于去重后使用having count查询出大于5的值
select class from courses group by class having count(distinct student) 5;
此图关键在于去重后使用having count查询出大于5的值
select class from courses group by class having count(distinct student) 5;
