tortoise / tortoise/tortoise-orm
cte结合窗口函数使用
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- Dominant language
- Python
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Description
英文不好,翻译的,不知道你们能看懂了不。。。。
中文来说就是:
如何在tortoise-orm中使用窗口函数和cte的特性进行partition_by等分组查询。
Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
i got some problem when i get the first data group by some fields,Ex team using window function and cte
Describe the solution you'd like
this is the example of django and django_cte:
cte = With(violatAndTrainModel.objects.filter(Q(deleteFlag=0)).annotate(
rw=models.Window(
expression=window.RowNumber(),
partition_by=[models.F('team')],
order_by=[models.F('time').desc()],
),
),
)
qs0 = cte.queryset().with_cte(cte).filter(rw=1)
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
Add any other context about the feature request here.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by comparing the requested Django/django_cte example with Tortoise ORM's existing query capabilities. Investigate how window functions, partition_by, and CTEs are currently represented, then define completion as enabling the described first-row-per-team query in Tortoise ORM.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- databases
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100