根据日期分组记录总数

Question

在我的SqlServer 2008中，我有一个名为Table1的表，其中一列名为IncDate，这是一个DateTime。

我需要运行一个查询，该查询返回该日期之前的记录总数。例如，我的表有这些记录：

IncDate
09/09/2012 16:21:51.547
09/09/2012 16:22:11.032
10/09/2012 13:51:33.327

我的查询需要输出：

Date................Total
09/09/2012...........2 
10/09/2012...........1

Answer 1

您需要CAST()日期为仅限日期。

SELECT Cast(incdate as date) DateOnly, Count(*) AS Total
FROM yourtable
GROUP BY Cast(incdate as date)

请参阅SQL Fiddle with Demo

如果您没有CAST()迄今为止的日期，那么计数将会被取消。

Answer 2

这是一种方式：

select cast(incdate as date) as date, count(*)
from table1
group by cast(incdate as date)
order by 1

Answer 3

尝试

SELECT cast(incdate as [date]) as [idate], count(incdate) totalCount
FROM table1
GROUP BY cast(incdate as [date])
ORDER BY totalCount