row_number() over(partition by clause order by filed asc|desc )----連續的從1開始到n的排序號
[sql] view plain copy
rank() over ( partition by clause order by filed asc|desc)---不連續的可以出現重複排序號
[sql] view plain copy
dense_rank() over (partition by clause order by filed asc|desc)--連續的可以出現重複排序號
[sql] view plain copy
ntile (integer_expression) over (partition by clause order by filed asc|desc )--連續的可以分組排序並且排序號是連續的
[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
*/
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