typelevel / typelevel/frameless
Add support for chained joins
Open
Nobody has claimed this yet.
- Dominant language
- Scala
- Stars
- 895
- Forks
- 135
- Avg merge
- 1d 16h
- Merged PRs (30d)
- 3
Description
Currently there is no way to call several joins in chain. (ON condition fails to work with types)
It makes code much less readable because of hard-to-read variables names.
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 locating the current join API and the type-checking path for ON conditions; compare how one join is represented with the requested chained form. Done means several joins can be expressed in sequence without ON-condition type failures and the resulting code is more readable.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala, spark
- Domain
- data-engineering
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100