pola-rs/polars

implement Arrow2's odbc reader and writers

Open

#2,994 opened on Mar 28, 2022

View on GitHub
 (6 comments) (6 reactions) (0 assignees)Rust (38,496 stars) (2,826 forks)batch import
enhancementgood first issue

Description

We now have native ODBC support upstream. This has to be exposed in polars similarly to existing IO readers and writers.

Contributor guide

Tech stack
rustsql
Domain
backenddatabase
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Rust programmingPolars codebase structureArrow2 basicsODBC concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the existing IO reader/writer implementations in Polars (e.g., CSV, Parquet) to understand the pattern. Look into Arrow2's ODBC support (likely in arrow2 crate) and how it provides readers and writers. Identify the necessary structs and traits to expose in Polars's API. Consider potential database connection parameters and how to handle them. Check for any related PRs or discussions in the issue comments for more context.