with temp as (
	select '1' 标识,'2023-01-01' 日期,'a' 项目
	union all select '1','2023-01-01','a'  
	union all select '2','2023-01-01','a'  
	union all select '2','2023-01-01','b'  
	union all select '3','2023-01-01','a'  
	union all select '3','2023-01-01','b' 
	union all select '3','2023-01-01','c' 
	union all select '4','2023-01-01','a'  
	union all select '4','2023-01-01','b' 
	union all select '4','2023-01-01','c' 
	union all select '4','2023-01-01','c' 
	union all select '4','2023-01-02','c' 
)
select 
	*,
	--相同并列数字
	(DENSE_RANK() over(partition by 标识,日期  order by 项目)) DENSE_RANK相同并列数字,
	--此位有跳跃
	RANK() OVER(PARTITION BY 标识,日期 ORDER BY 项目 DESC) RANK此位有跳跃,
	--分组后依旧按照顺序
	(row_number() over(partition by 标识,日期  order by 项目)) row_number分组后依旧按照顺序
from 
	temp
order by
	标识,日期,项目

查询结果图，主键为“标识和日期”，排序为“项目”