duckdb/community-extensions
May 2026 – Jun 2026
2 Months active
Languages Used
C++YAML
Technical Skills
C++C++ developmentCMakeDependency ManagementDuckDBFirebird
Fernando Lozer
PROFILE
Fernando Lozer
Over a two-month period, contributed to the duckdb/community-extensions repository by developing and enhancing database extension integrations. Delivered a federated read-only Firebird extension for DuckDB, enabling advanced query capabilities such as projection, filter pushdown, and type mapping, while implementing cross-platform build tooling with CMake and vcpkg for reliable Windows and macOS support. Improved metadata handling with features like row_offset paging and metadata caching to accelerate analytics workflows. Expanded data integration by adding a Salesforce extension for read-only access to Salesforce orgs as SQL tables. Work focused on C++ development, API integration, and robust dependency management to ensure stable interoperability.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
3
Lines of code
222
Activity Months2
Your Network
164 peopleWork History
June 2026
2 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary for the duckdb/community-extensions repository focused on key feature deliveries and repository impact.
2 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary for the duckdb/community-extensions repository focused on key feature deliveries and repository impact.
June 2026
May 2026
4 Commits • 1 Features
May 1, 2026May 2026: Delivered core Firebird extension integration for DuckDB in the community-extensions repo, enabling federated read-only access to Firebird databases with projection and filter pushdown, plus comprehensive type mapping and native catalog attachment. Implemented cross-platform CI/build tooling via vcpkg for Windows/macOS to ensure reliable builds and dependency resolution. Enhanced query capabilities with row_offset paging, prepared-statement binding, NOT IN/NOT predicate pushdown, and improved metadata discovery (SHOW TABLES, DESCRIBE, information_schema) with accurate nullability propagation. Consolidated a lightweight connection pool and metadata cache to speed up repeated federated queries and improve overall analytics latency. Release baseline pinned to v0.4.0 for stable interoperability.
May 2026
4 Commits • 1 Features
May 1, 2026May 2026: Delivered core Firebird extension integration for DuckDB in the community-extensions repo, enabling federated read-only access to Firebird databases with projection and filter pushdown, plus comprehensive type mapping and native catalog attachment. Implemented cross-platform CI/build tooling via vcpkg for Windows/macOS to ensure reliable builds and dependency resolution. Enhanced query capabilities with row_offset paging, prepared-statement binding, NOT IN/NOT predicate pushdown, and improved metadata discovery (SHOW TABLES, DESCRIBE, information_schema) with accurate nullability propagation. Consolidated a lightweight connection pool and metadata cache to speed up repeated federated queries and improve overall analytics latency. Release baseline pinned to v0.4.0 for stable interoperability.
Activity
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Quality Metrics
Correctness96.6%
Maintainability86.6%
Architecture90.0%
Performance86.6%
AI Usage30.0%
Skills & Technologies
Programming Languages
C++YAML
Technical Skills
API integrationC++C++ developmentCMakeDependency ManagementDuckDBFirebirdSQLdatabase integrationdatabase managementextension developmentmetadata handling
Repositories Contributed To
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