lance-format / lance-format/lance
[DuckDB] Filters pushdown via native lance reader (`lance_scan`)
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duckdb
enhancement
good first issue
rust
- Dominant language
- Rust
- Stars
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Description
DuckDB's C API doesn't seems to support filter pushdown, but the C++ one seems to have good support:
It sounds like we can even tell DuckDB which filters we support dynamically.
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 native lance_scan implementation and reading the linked DuckDB table_function.hpp filter API. Determine how supported filters can be reported dynamically; done means filters are pushed through the native Lance reader rather than handled only after scanning.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, rust
- Domain
- data, database
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 32/100