activeloopai/deeplake
Dec 2025 – Jan 2026
2 Months active
Languages Used
C++Python
Technical Skills
C++ developmentDatabase managementDuckDBPostgreSQLQuery optimizationSoftware testing
Vahan Stepanyan
PROFILE
Vahan Stepanyan
Vahan Stepanyan developed a PostgreSQL to DuckDB query translation layer for the activeloopai/deeplake repository, focusing on translating complex SQL features such as JSON operators, type casts, timestamp functions, and date operations. He migrated unit tests from C++ to Python using pytest, improving maintainability and ensuring cross-database compatibility. In a subsequent enhancement, Vahan extended the translator to support BETWEEN clauses and robustly handle SQL keywords as identifiers, addressing edge cases in TPCH queries. His work leveraged C++, Python, and advanced database management skills, resulting in a well-tested, reliable translation system that improved analytics workflows and reduced query translation errors.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
2
Lines of code
2,751
Activity Months2
Your Network
8 peopleSame Organization
@activeloop.ai3
Work History
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026: Delivered a targeted enhancement to the PG to DuckDB translator in activeloopai/deeplake to properly translate BETWEEN clauses and handle SQL keywords used as identifiers. This work includes robust TPCH-query support and accompanying tests to validate translation accuracy, reducing translation errors and improving analytics reliability.
1 Commits • 1 Features
Jan 1, 2026January 2026: Delivered a targeted enhancement to the PG to DuckDB translator in activeloopai/deeplake to properly translate BETWEEN clauses and handle SQL keywords used as identifiers. This work includes robust TPCH-query support and accompanying tests to validate translation accuracy, reducing translation errors and improving analytics reliability.
January 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025Monthly summary for 2025-12: Implemented a PostgreSQL to DuckDB query translation layer for activeloopai/deeplake, including translation rules for PostgreSQL JSON queries to DuckDB syntax and coverage of differences in JSON operators, type casts, timestamp functions, and date operations. Migrated tests from C++ to Python pytest to enhance maintainability and cross-engine compatibility, with a focus on verifying translation accuracy from PostgreSQL to DuckDB syntax.
December 2025
2 Commits • 1 Features
Dec 1, 2025Monthly summary for 2025-12: Implemented a PostgreSQL to DuckDB query translation layer for activeloopai/deeplake, including translation rules for PostgreSQL JSON queries to DuckDB syntax and coverage of differences in JSON operators, type casts, timestamp functions, and date operations. Migrated tests from C++ to Python pytest to enhance maintainability and cross-engine compatibility, with a focus on verifying translation accuracy from PostgreSQL to DuckDB syntax.
Activity
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Quality Metrics
Correctness100.0%
Maintainability86.6%
Architecture93.4%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++Python
Technical Skills
C++ developmentDatabase ManagementDatabase managementDuckDBPostgreSQLQuery optimizationSQLSoftware testingTestingdatabase testingpytestunit testing
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