4paradigm / 4paradigm/OpenMLDB
more flexible support to window (SimpleOps)
- Lingua principale
- C++
- Stelle
- 1.7k
- Fork
- 331
- Merge medio
- 12g 12h
- PR unite (30g)
- 1
Descrizione
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
Guida per i contributori
Apri la guida per i contributori
Direzione di ricerca
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.
Scritto dal modello di indicizzazione a partire dal testo della issue.
Valutazione
- Stack tecnologico
- sql
- Ambito
- data-engineering, databases, machine-learning
- Tipo di issue
- Funzionalità
- Difficoltà
- 4/5
- Tempo stimato
- 3-5 giorni
- Stato di attività
- Ferma
- Chiarezza
- Da chiarire
- Idoneità per principianti
- 30/100