我有一个包含以下列的表
application_uuid
changed_at_utc
changed_by
name
我想按application_uuid和changed_at_utc排序。然后，我想仅过滤直接来自application_status文本“准备评分”的行之后的行
使用Python和Pandas，我会做这样的事情......
application_statuses = application_statuses.sort_values(['application_uuid', 'changed_at_utc'], ascending=[True, True]).reset_index(drop=True)
indexes = application_statuses[application_statuses['application_status']=='Ready for Scoring'].index + 1
next_statuses = application_statuses.ix[indexes]
如何使用SQL执行相同的操作？
答案 0 :(得分：3)
根据您的解释，您可以使用Project Solution
Unit Testing Project
UnitTestClass.cs
CodedUI Testing Project
CodedUITests.cs
CodedUIMap.uitest
Testing Utilities Project
HelperFile1.cs
HelperFile2.cs
Database Project
Insert whatever here
Services Project
your web services
Web Project
Your View and Controller files etc.
功能执行此操作。
lead如果必须为每个select next_application_status,application_uuid,changed_at_utc,changed_by
from (select t.*,
lead(application_status) over(order by application_uuid,changed_at_utc) as next_appliaction_status
from tablename t
) t1
where application_status = 'Ready for Scoring'
执行此操作，请在application_uuid中添加partition by，如下所示。
lead如果在application_status select next_application_status,application_uuid,changed_at_utc,changed_by
from (select t.*,
lead(application_status) over(partition by application_uuid order by changed_at_utc) as next_appliaction_status
from tablename t
) t1
where application_status = 'Ready for Scoring'
之后需要 all 行，请获取该特定行的时间戳并选择所有其他更大的时间戳。这假设application_uuid最多只有一行Ready for Scoring状态。
Ready for Scoring