我有一个像这样的表:
Table1
---------------------
Id |Kind1|Kind2|Kind3|
---------------------
1 | 2 | 2 | 3 | *
---------------------
2 | 2 | 2 | 2 | +
---------------------
3 | 2 | 2 | 1 |
---------------------
4 | 2 | 2 | 3 | *
---------------------
5 | 2 | 1 | 1 |
---------------------
6 | 1 | 1 | 1 |
---------------------
7 | 2 | 2 | 2 | +
----------------------
我想得到如下所示的结果 ID 必须自动生成 我必须计算同一行组的数量
Result
------------------------------
Id | Count |New1 |New2 |New3 |
------------------------------
1 | 2 | 2 | 2 | 2 |
------------------------------
2 | 2 | 2 | 2 | 3 |
------------------------------
3 | 1 | 2 | 2 | 1 |
------------------------------
4 | 1 | 2 | 1 | 1 |
------------------------------
5 | 1 | 1 | 1 | 1 |
------------------------------
我如何在 sql server 中执行此操作？
最佳答案
select ROW_NUMBER() over (order by (select 0)) as ID,count(*) as count,kind1 as new1,kind2 as new2,kind3 as new3
from yourtable
group by kind1,kind2,kind3
关于sql - 如何在sql中对同类行进行分组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12935500/