技術標籤：SQL server 筆記sql資料庫sqlserver

資料，建立表，檢視資料表（程式碼）~

1、按成績(不分科目)進行排序，並顯示排名，Score 重複時保留名次空缺

select *,RANK()over(order by score desc)名次 from SC 

2、按成績(不分科目)進行排序，並顯示排名，Score 重複時合併名次(並列第…)

select *,DENSE_RANK()over(order by score desc)名次 from SC

3、按各科成績（分科目）進行排序，並顯示排名，Score 重複時保留名次空缺

--ways 1
 

select * ,
(select count(score)+1 from 
SC B where B.C# = A.C# and B.score > A.score) 名次 from 
SC A order by C#,名次

--ways 2
select *,RANK()over(order by score desc)名次 from SC where C# ='01' union all
select *,RANK()over(order by score desc)名次 from SC where C# ='02' union all
select *,RANK()over(order
 
 by score desc)名次 from SC where C# ='03' 

3、按各科成績（分科目）進行排序，並顯示排名，重複時合併名次(並列第…)

--ways 1
select * ,
(select count(distinct score)+1 from 
SC B where B.C# = A.C# and B.score > A.score) 名次 from 
SC A order by C#,名次

--ways 2
select *,DENSE_RANK()over(order by score desc)名次 from 
SC where C# ='01' union all
 

select *,DENSE_RANK()over(order by score desc)名次 from 
SC where C# ='02' union all
select *,DENSE_RANK()over(order by score desc)名次 from 
SC where C# ='03'