这是原始数据
id title hired_reason fired_reason hired_date fired_date
xxxxx Asst Washer abc xyz 1992-01-01 2004-08-31
xxxxx Asst Washer def sdhj 2004-09-01 2005-02-28
xxxxx washer ghi hsgd 2005-03-01 2007-12-31
xxxxx washer jkl hdhs 2008-01-01 2012-03-31
xxxxx washer mno sgh 2012-04-01 2013-04-18
xxxxx washer pqr tshsj 2013-05-21 2016-01-06
我喜欢输出：
id title hired_reason fired_reason hired_date fired_date
xxxxx Asst Washer abc sdhj 1992-01-01 2005-02-28
xxxxx Washer ghi tshsj 2005-03-01 2016-01-06
我通过使用---
来实现这一目标select id, min(hired_date), max(fired_date),seq
from (select ......,...,....
,row_number() over(order by hired_date) as line1
,row_number() over(partition by title ,order by hired_date) as line2
,line1-line2 as seq
from table) table
group by seq,id
所有测试用例运行良好但在一种情况下失败 原始数据
id title hired_reason fired_reason hired_date fired_date
yyyy Wp abc hsdah 2017-01-01 2017-04-25
yyyy W WP def shd 2017-04-26 2017-08-04
yyyy Wp ghi jkl 2017-08-05 2017-10-20
yyyy Mn jkl def 2017-10-21 2017-11-03
yyyy Wp mno dfs 2017-11-04 2019-12-31
输出我喜欢与原始数据相同但使用我的查询逻辑获得的数据如下
id title hired_reason fired_reason hired_date fired_date line1 line2 seq
yyyy Wp abc hsdah 2017-01-01 2017-04-25 1 1 0
yyyy W WP def shd 2017-04-26 2017-08-04 2 1 1
yyyy Wp ghi jkl 2017-08-05 2017-10-20 3 2 1
yyyy Mn jkl def 2017-10-21 2017-11-03 4 1 3
yyyy Wp mno dfs 2017-11-04 2019-12-31 5 3 2
我正在按seq进行分组并从分组数据中执行最小值和最大值我正在获取输出
id title hired_reason fired_reason hired_date fired_date
yyyy Wp abc hsdah 2017-01-01 2017-04-25
yyyy W WP def shd 2017-04-26 2017-10-20
yyyy Mn jkl def 2017-10-21 2017-11-03
yyyy Wp mno dfs 2017-11-04 2019-12-31
在第二行中更改了fired_date，根据我的查询删除了第三行
先谢谢。