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David Stancu

PROFILE

David Stancu

During a three-month period, Daniel Stancu developed and enhanced database extensions and core data processing features across the duckdb/community-extensions and tarantool/datafusion repositories. He built a DuckDB extension in C++ and Rust to enable SQL-based analytics on Microsoft PST files, supporting queries over emails, contacts, and appointments, and later expanded it to process remote PST data via URI access. In tarantool/datafusion, Daniel resolved a schema mapping bug in ListingScan, improving data scanning accuracy and reliability. His work demonstrated depth in cross-platform development, schema management, and extension development, with careful attention to maintainable commits, robust testing, and clean release processes.

Overall Statistics

Feature vs Bugs

67%Features

Repository Contributions

4Total
Bugs
1
Commits
4
Features
2
Lines of code
156
Activity Months3

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 summary for duckdb/community-extensions. Delivered the DuckDB PST Extension 0.1.0 with remote URI access and improved query capabilities, enabling remote PST data processing and expanding data ingestion options for DuckDB users. Focused on feature delivery with clean release/versioning and minimal disruption.

January 2026

2 Commits • 1 Features

Jan 1, 2026

Month: 2026-01. Focused on delivering a new DuckDB extension to read Microsoft PST files, enabling SQL-based analytics on emails, contacts, and calendar data. Implemented cross-platform compatibility by excluding Windows builds and added the extension package with a clear commit sequence.

October 2025

1 Commits

Oct 1, 2025

October 2025: Delivered a critical bug fix for ListingScan projection resolution in tarantool/datafusion, ensuring correct mapping to the table schema (including partition columns), expanded test coverage, and improved data scanning accuracy. The change reduces projection mismatches and increases query reliability in production.

Activity

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Quality Metrics

Correctness97.6%
Maintainability95.0%
Architecture95.0%
Performance95.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++Rust

Technical Skills

C++C++ developmentData ProcessingQuery OptimizationSQLSchema Managementbuild configurationcross-platform developmentdatabase managementdatabase queryingextension development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

duckdb/community-extensions

Jan 2026 Feb 2026
2 Months active

Languages Used

C++

Technical Skills

C++C++ developmentbuild configurationcross-platform developmentdatabase queryingextension development

tarantool/datafusion

Oct 2025 Oct 2025
1 Month active

Languages Used

Rust

Technical Skills

Data ProcessingQuery OptimizationSchema Management