row_number() over(partition by clause order by filed asc|desc )----连续的从1开始到n的排序号
[sql] view plain copy
rank() over ( partition by clause order by filed asc|desc)---不连续的可以出现重复排序号
[sql] view plain copy
dense_rank() over (partition by clause order by filed asc|desc)--连续的可以出现重复排序号
[sql] view plain copy
ntile (integer_expression) over (partition by clause order by filed asc|desc )--连续的可以分组排序并且排序号是连续的
[sql] view plain copy
----案例
create table tb (
[year] [int] NOT NULL,
[week] [int] NOT NULL,
[base_goods_id] [int] NOT NULL,
[uid] [bigint] NOT NULL,
[amount] [money] NOT NULL,
[count] [int] NOT NULL,
[bean] [money] NOT NULL
)
insert tb
select 2013,2,6577,20087,32640.00,1088,26112.00
union all
select 2013,2,6577,20211,39420.00,1314,31536.00
union all
select 2013,2,6577,20220,60.00,2,111.00
union all
select 2013,2,6577,20457,60.00,2,48.00
union all
select 2013,2,6577,20458,60.00,2,48.00
go
select * from tb
/*
2013 2 6577 20087 32640.00 1088 26112.00
2013 2 6577 20211 39420.00 1314 31536.00
2013 2 6577 20220 60.00 2 111.00
2013 2 6577 20457 60.00 2 48.00
2013 2 6577 20458 60.00 2 48.00
*/
select ROW_NUMBER() over(partition by base_goods_id order by count)rn,* from tb
/*
rn year week base_goods_id uid amount count bean
1 2013 2 6577 20220 60.00 2 111.00
2 2013 2 6577 20457 60.00 2 48.00
3 2013 2 6577 20458 60.00 2 48.00
4 2013 2 6577 20087 32640.00 1088 26112.00
5 2013 2 6577 20211 39420.00 1314 31536.00
*/
select dense_rank()over(partition by base_goods_id order by count )rn,* from tb
/*
rn year week base_goods_id uid amount count bean
1 2013 2 6577 20220 60.00 2 111.00
1 2013 2 6577 20457 60.00 2 48.00
1 2013 2 6577 20458 60.00 2 48.00
2 2013 2 6577 20087 32640.00 1088 26112.00
3 2013 2 6577 20211 39420.00 1314 31536.00
*/
select rank()over(partition by base_goods_id order by count )rn,* from tb
/*
1 2013 2 6577 20220 60.00 2 111.00
1 2013 2 6577 20457 60.00 2 48.00
1 2013 2 6577 20458 60.00 2 48.00
4 2013 2 6577 20087 32640.00 1088 26112.00
5 2013 2 6577 20211 39420.00 1314 31536.00
*/
select ntile(2)over(partition by base_goods_id order by count )rn,* from tb
/*
rn year week base_goods_id uid amount count bean
1 2013 2 6577 20220 60.00 2 111.00
1 2013 2 6577 20457 60.00 2 48.00
1 2013 2 6577 20458 60.00 2 48.00
2 2013 2 6577 20087 32640.00 1088 26112.00
2 2013 2 6577 20211 39420.00 1314 31536.00
*/