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Blog post about user defined window functions #6781

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apache/datafusion-site
#66

Description

@alamb

Is your feature request related to a problem or challenge?

We recently did a bunch of work to support user defined window aggregates: #5781

It would be great to write a blog post to highlight this support as I don't think it is as common.

Describe the solution you'd like

The basic outline would be:

  1. introduce window functions in SQL
  2. Introduce siding windows
  3. Explain why computing them is hard
  4. Show how to do it in DataFusion, and show how fast it can be

Describe alternatives you've considered

No response

Additional context

No response

Activity

  1. added
    enhancementNew feature or request
    documentationImprovements or additions to documentation
    on Jun 27, 2023
  2. self-assigned this
    on Jul 10, 2023
  3. Adez017 commented on Apr 3, 2025

    @Adez017
    Contributor

    hi @alamb , it sounds pretty interesting ! .

  4. Adez017 commented on Apr 3, 2025

    @Adez017
    Contributor

    take

  5. alamb commented on Apr 3, 2025

    @alamb
    ContributorAuthor

    Thanks @Adez017 --

    You can make a blog post for the DataFusion blog on by making a PR to this repo: https://github.com/apache/datafusion-site

  6. Adez017 commented on Apr 4, 2025

    @Adez017
    Contributor

    Thanks @Adez017 --

    You can make a blog post for the DataFusion blog on by making a PR to this repo: https://github.com/apache/datafusion-site

    hey! @alamb I had done some work around this . before I open a PR I request you to look at this : apache/datafusion-site@main...Adez017:datafusion-site:main

  7. alamb commented on Apr 4, 2025

    @alamb
    ContributorAuthor

    Thanks @Adez017 ! I see apache/datafusion-site#66 and will give it a review soon

  8. Adez017 commented on Apr 4, 2025

    @Adez017
    Contributor

    yeah sure ! @alamb 👍

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