4paradigm / 4paradigm/OpenMLDB
more flexible support to window (SimpleOps)
- 主要言語
- C++
- スター
- 1.7k
- フォーク
- 331
- 平均マージ
- 12日 12時間
- マージ済み PR（30日）
- 1
説明
Here *SimpleOps* refer to one of:
- SimpleProject(TableSource)
- SimpleProject(Last Join)
- SImpleProject (Rename)
- SImpleProject (A last join ( SimpleProject (B last join C))
- ...
Known limits
- window op (the partition by & order by) may only refer to left most physical table inside simple project
There are already issues which actually part of this feature:
- https://github.com/4paradigm/OpenMLDB/issues/2563
- window union #2832
コントリビューションガイド
調査の方向性
The issue describes extending window function support in SimpleOps. Start by reading the linked issue #2563 and PR #2832 to understand the current limitations. Examine the code for window operations and SimpleProject handling, likely in the query planner or optimizer. Determine how partition by and order by clauses are currently resolved and where they are restricted to the leftmost physical table.
索引モデルが issue の本文から書いたものです。
評価
- 技術スタック
- sql
- 領域
- data-engineering, databases, machine-learning
- issue の種類
- 機能追加
- 難易度
- 4/5
- 見積もり時間
- 3〜5日
- 活発さ
- 停滞
- 明瞭さ
- 説明が足りない
- 初心者へのやさしさ
- 30/100