使用count（*）的SQL查询

Question

我想列出名字和他们完成某项行动的次数。然后我想要最多次订购这些名字。

到目前为止，我有以下代码，但我一直收到错误：

select name, count(*) as NoOfTimes
from CustName
group by count(*);
order by count(*) asc;

Answer 1

我应该注意，如果你想在结果集的开头有大多数次，你想要一个降序排序：

select name, count(*) as NoOfTimes
from CustName
group by name
order by count(*) desc;

Answer 2

要按名称显示计数，您必须按名称分组

select name, count(*) as NoOfTimes
from CustName
group by name
order by NoOfTimes desc

Answer 3

按索引排序也是一个好主意：

select name, count(*) as NoOfTimes
from CustName
group by name
order by 2 DESC