如何使用不带临时表的SQL查询为组中的每个元素添加序列号

Question

我的问题与此链接中发布的问题非常相似 - How to add sequence number for groups in a SQL query without temp tables

但是，我需要枚举组的出现。最终输出如下：

Record  Group     GroupSequence
-------|---------|--------------
1       Chickens  1
2       Chickens  2
3       Cows      1
4       Horses    1
5       Horses    2
6       Horses    3

另外，这必须在Oracle SQL中完成。有什么想法吗？

Answer 1

也许是这样的：

SELECT
    ROW_NUMBER() OVER(PARTITION BY [Group] ORDER BY Record) AS GroupSequence1,
    RANK() OVER(PARTITION BY [Group] ORDER BY Record) AS GroupSequence2,
    DENSE_RANK() OVER(PARTITION BY [Group] ORDER BY Record) AS GroupSequence3,
    Table1.Group,
    Table1.Record
FROM
    Table1

GroupSequence1，GroupSequence2和GroupSequence3会为您提供所需的输出。