datafusion-contrib / datafusion-contrib/datafusion-functions-json
Operate on list types
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- Dominant language
- Rust
- Stars
- 62
- Forks
- 33
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 9
Description
It's convenient to store json arrays as lists of the inner type in arrow so that functions such as unnest, etc. can work. May also be more performant, etc.
It would be nice to make this transparent to users. I think we just need to make list_col->0 behave the same as json_array_col->0, which should be doable.
Contributor guide
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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 tracing how list_col->0 and json_array_col->0 are handled, using unnest as the usage example. The issue names no files or tests, so first locate the relevant type-handling entry point. Done means list types behave transparently like JSON array columns for these operations.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- databases
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100