sql-server - 分区上的 row_number

Question

似乎无法获得正确的行号，当模板相同时我可以让它计数，但如果模板更改则无法继续计数

create table #temp
(
question varchar(max)
,rvdt datetime
,name varchar(20)
,cdt datetime
,template varchar(max)
)

insert into #temp
(question ,rvdt ,name ,cdt ,template)
values
('question 1', '11/11/2014 10:56:27 PM', 'Joe', '10/11/2014 11:56:27 PM', 'Tempalte 1'),
('question 2', '11/11/2014 10:56:27 PM', 'Joe', '10/11/2014 11:56:27 PM', 'Tempalte 1'),
('question 3', '11/11/2014 10:56:27 PM', 'Joe', '10/11/2014 11:56:27 PM', 'Tempalte 1'),
('question 11', '11/12/2014 10:56:27 PM', 'Joe', '10/12/2014 11:56:27 PM', 'Tempalte 2'),
('question 22', '11/12/2014 10:56:27 PM', 'Joe', '10/12/2014 11:56:27 PM', 'Tempalte 2'),
('question 32', '11/12/2014 10:56:27 PM', 'Joe', '10/12/2014 11:56:27 PM', 'Tempalte 2'),
('question 1', '11/13/2014 10:56:27 PM', 'Joe', '10/13/2014 11:56:27 PM', 'Tempalte 1'),
('question 2', '11/13/2014 10:56:27 PM', 'Joe', '10/13/2014 11:56:27 PM', 'Tempalte 1'),
('question 3', '11/13/2014 10:56:27 PM', 'Joe', '10/13/2014 11:56:27 PM', 'Tempalte 1'),
('question 11', '11/14/2014 10:56:27 PM', 'Mike', '10/14/2014 11:56:27 PM', 'Tempalte 2'),
('question 22', '11/14/2014 10:56:27 PM', 'Mike', '10/14/2014 11:56:27 PM', 'Tempalte 2'),
('question 33', '11/14/2014 10:56:27 PM', 'Mike', '10/14/2014 11:56:27 PM', 'Tempalte 2')

Select 
ROW_NUMBER() over (partition by name, rvdt order by rvdt )'rv#'
,rvdt
,cdt
,name
,template   
from 
#temp
order by rvdt
drop table #temp

我尝试了与partitin中的内容不同的组合，但我似乎无法得到正确的组合

Answer 1

使用Dense_Rank() 排名函数

SELECT Dense_rank()OVER (partition BY name ORDER BY cdt) Rn,
       rvdt,
       cdt,
       name,
       template
FROM   #temp 

输出:

Rn  rvdt                    cdt                     name    template
--  ----------------------- ----------------------- ----    ----------
1   2014-11-11 22:56:27.000 2014-10-11 23:56:27.000 Joe     Tempalte 1
1   2014-11-11 22:56:27.000 2014-10-11 23:56:27.000 Joe     Tempalte 1
1   2014-11-11 22:56:27.000 2014-10-11 23:56:27.000 Joe     Tempalte 1
2   2014-11-12 22:56:27.000 2014-10-12 23:56:27.000 Joe     Tempalte 2
2   2014-11-12 22:56:27.000 2014-10-12 23:56:27.000 Joe     Tempalte 2
2   2014-11-12 22:56:27.000 2014-10-12 23:56:27.000 Joe     Tempalte 2
3   2014-11-13 22:56:27.000 2014-10-13 23:56:27.000 Joe     Tempalte 1
3   2014-11-13 22:56:27.000 2014-10-13 23:56:27.000 Joe     Tempalte 1
3   2014-11-13 22:56:27.000 2014-10-13 23:56:27.000 Joe     Tempalte 1
1   2014-11-14 22:56:27.000 2014-10-14 23:56:27.000 Mike    Tempalte 2
1   2014-11-14 22:56:27.000 2014-10-14 23:56:27.000 Mike    Tempalte 2
1   2014-11-14 22:56:27.000 2014-10-14 23:56:27.000 Mike    Tempalte 2