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Title: fix: add greater error handling around polars and duckdb csv reader by georgeRobertson · Pull Request #112 · NHSDigital/data-validation-engine · GitHub

Open Graph Title: fix: add greater error handling around polars and duckdb csv reader by georgeRobertson · Pull Request #112 · NHSDigital/data-validation-engine

X Title: fix: add greater error handling around polars and duckdb csv reader by georgeRobertson · Pull Request #112 · NHSDigital/data-validation-engine

Description: TLDR of changes The DuckDB and Polars csv readers are not quite as lenient as the csv or spark csv readers. This change will capture any reader errors and produce a feedback message to the user rather than creating a runtime error. What kind of changes does this PR introduce? Tick all that apply fix: A bug fix. Correlates with PATCH in SemVer feat: A new feature. Correlates with MINOR in SemVer docs: Documentation only changes style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc) refactor: A code change that neither fixes a bug nor adds a feature perf: A code change that improves performance test: Adding missing or correcting existing tests build: Changes that affect the build system or external dependencies (example scopes: pip, docker, npm) ci: Changes to CI configuration files and scripts (example scopes: GitLabCI) Please check if the PR fulfills these requirements I have read and followed the Contributing guidance Docs have been added / updated Tests and Linting in the CI are passing Changes have been reviewed and approved by a Project Maintainer

Open Graph Description: TLDR of changes The DuckDB and Polars csv readers are not quite as lenient as the csv or spark csv readers. This change will capture any reader errors and produce a feedback message to the user rat...

X Description: TLDR of changes The DuckDB and Polars csv readers are not quite as lenient as the csv or spark csv readers. This change will capture any reader errors and produce a feedback message to the user rat...

Opengraph URL: https://github.com/NHSDigital/data-validation-engine/pull/112

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fb62b7d fix: add greater error handling around polars and duckdb csv reader georgeRobertson Jun 8, 2026 https://github.com/NHSDigital/data-validation-engine/pull/112/commits/fb62b7d1cb3d0870857db930d85b8386a028e14f
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