sql - 根据日期分组记录总数

Question

在我SqlServer 2008的表中，我有一个名为 Table1 的表，其中有一列名为IncDateDateTime。

我需要运行一个查询，返回该日期的记录总数。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

score 4 · Accepted Answer

您需要CAST()将日期设置为仅日期。

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

见SQL Fiddle with Demo

如果您没有CAST()仅日期到日期，则计数将关闭。

score 0 · Accepted Answer

这是一种方法：

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

score 0 · Accepted Answer

尝试

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