計數範圍之間的日期

Question

我正在計算範圍之間的日期。我看過here但這不適合我。

這裏是我的表的樣本

repo | revision | date   | author 

test | 1   | 01/01/2011 | chris 
test | 2   | 01/01/2011 | chris 
test | 3   | 01/02/2011 | chris 

所以我想算對等同的回購日期...所以在這種情況下，它會返回2爲01/01/2011和1爲01/02/2011

這裏是我想我已經得到辦成這個最接近...

select date, count(*) 
from SVNLogEntry 
where repo = 'test' and date between '01/01/2011' and '01/01/2017' 
group by date; 

Answer 1

如果你婉牛逼不同日期的數量，然後使用count(distinct)：

select repo, count(distinct date) 
from SVNLogEntry 
where repo = 'test' and date between '2011-01-01' and '2017-01-01' 
group by repo; 

爲了讓他們每repo，然後用group by repo，不group by date。