PHP速学视频免费教程(入门到精通)
PHP怎么学习?PHP怎么入门?PHP在哪学?PHP怎么学才快?不用担心,这里为大家提供了PHP速学教程(入门到精通),有需要的小伙伴保存下载就能学习啦!
在sqlserver中group by 不能作为子句查询: 如:select * from (select deptno,count(*) counts from emp group by deptno) 上面在sqlserver中运行会报错,说明sqlserver中group by 不能作为子句 下面sql语句为查找人数最多的部门以及该部门号: select * fr
在sqlserver中group by 不能作为子句查询:
如:select * from (select deptno,count(*) counts from emp group by deptno)
上面在sqlserver中运行会报错,说明sqlserver中group by 不能作为子句
下面sql语句为查找人数最多的部门以及该部门号:
select * from (select deptno,count(*) counts from emp group by deptno) where counts = (select max(count) from (select deptno,count(*) count from emp group by deptno));
人数最多的专业在sqlserver中查询:
select classID,COUNT(*) from student group by classID having
COUNT(*)=(select top 1 COUNT(*) as 人数 from student group by classID order by COUNT(*))
or
COUNT(*)=(select top 1 COUNT(*) as 人数 from student group by classID order by COUNT(*) desc)
已抢5911个
抢已抢83543个
抢已抢13561个
抢已抢48002个
抢已抢182609个
抢已抢84054个
抢