Sql 计算日期范围内的交易记录总数

我有以下数据： 离开

我想在一个特定的日子内归还所有的假期。 输出：

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您可以使用递归CTE展开日期，然后使用

分组依据

：

with cte as (
      select startdate as thedate, enddate
      from tb_leave
      union all
      select dateadd(day, 1, startdate), enddate
      from cte
      where startdate < enddate
)
select thedate, count(*)
from cte
group by thedate
with (MAXRECURSION 0);

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它必须是单个查询吗？在第一个查询中，我将终止该语句。在语句完成之前，已耗尽最大递归100。

total   |   Date
  1     |   01/02/2014
  3     |   01/03/2014
  3     |   01/04/2014
  3     |   01/05/2014
  2     |   01/06/2014
  2     |   01/07/2014
  1     |   01/09/2014

with cte as (
      select startdate as thedate, enddate
      from tb_leave
      union all
      select dateadd(day, 1, startdate), enddate
      from cte
      where startdate < enddate
)
select thedate, count(*)
from cte
group by thedate
with (MAXRECURSION 0);

select dateadd(day, v.number - 1, startdate) as thedate, count(*)
from tb_leave l join
     spt_values v
     on dateadd(day, v.number - 1, startdate) <= l.enddate
group by dateadd(day, v.number - 1, startdate)
order by 1;