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 - 如何在没有临时表的SQL查询中为组添加序列号

但是,我需要列举组的发生.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

此外,这必须在Oracle SQL中完成.有任何想法吗？

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并GroupSequence3会得到你想要的输出.