Translate Select() with index using the ROW_NUMBER() window function
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 25/100
Research direction
Start by examining EF Core's LINQ query translation for IQueryable.Select overloads that receive an index, then compare the requested ROW_NUMBER() SQL shape with the proposed client-side and SQL CASE alternatives. Done would require a decided translation behavior and coverage for the relevant query forms and providers.
Written by the indexing model from the issue text.
Description
Integrated with EF entities mapping from database based on row number
There is a simply way to translate IQueryable.Select((source, index) => ... ) into SQL using row_number() over ()
And optional actions based on query: SQL case operator or client side transformation.
Just an example
select * [, case when t1."ROW" = ... then ... end]
from (
select *, row_number() over () as "ROW"
from ... t0
where ...
order by t0."DATE" desc
limit ...
) t1
- Dominant language
- C#
- Stars
- 14.8k
- Forks
- 3.4k
- Avg merge
- 2d 5h
- Merged PRs (30d)
- 134
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.
More from dotnet/efcore
-
Difficulty 4/5 3-5 days Newbie friendliness 55/100
-
customer-reported
Difficulty 5/5 Over a week Newbie friendliness 38/100
-
area-cosmos area-vector-search
Difficulty 5/5 Over a week Newbie friendliness 25/100
-
area-cosmos
Difficulty 5/5 Over a week Newbie friendliness 25/100
-
area-tools needs-design
Difficulty 4/5 3-5 days Newbie friendliness 25/100
Similar issues
-
Difficulty 2/5 1-3 hours Newbie friendliness 86/100
-
:watch: Not Triaged 11.0 fundamentals/subsvc
Difficulty 2/5 1-3 hours Newbie friendliness 92/100
dotnet/AspNetCore.Docs#37699 ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
SubtitleEdit/subtitleedit#15108 · 1 comment ·
-
area/docs-content Bug pulumi/docs
Difficulty 1/5 1-3 hours Newbie friendliness 94/100
-
agentic-workflows untriaged
Difficulty 2/5 1-3 hours Newbie friendliness 76/100