Altinity/ClickHouse
Jan 2025 – Jan 2025
1 Month active
Languages Used
C++MarkdownSQL
Technical Skills
Arithmetic OperationsC++Data TypesDatabaseDatabase DevelopmentDatabase Testing
Li Yin
PROFILE
Li Yin
Yin Li developed the DateTime64 subtraction operator for the Altinity/ClickHouse repository, enabling precise subtraction between DateTime64 and other date or time types. The implementation focused on enhanced precision, robust overflow and decimal overflow handling, and improved error checking, addressing edge cases in time-based analytics. Yin refactored the binary arithmetic utility using C++ template lambdas, which increased maintainability and clarity of the codebase. Updates to the SQL-based test suite ensured new semantics and timezone handling were thoroughly validated. Documentation was revised to reflect the new operator’s usage and edge cases, supporting both developer productivity and reliable database operations.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
1
Lines of code
329
Activity Months1
Your Network
433 people
Work History
January 2025
6 Commits • 1 Features
Jan 1, 2025January 2025 (Altinity/ClickHouse): Implemented the DateTime64 subtraction operator supporting subtraction with other date/time types, with improved precision, overflow checks, and decimal overflow handling. Updated tests to cover new semantics and fixed failures related to session_timezone/timezone handling. Refactored the binary arithmetic utility using template lambdas to improve maintainability. Updated documentation to reflect the new operator and its edge cases. This work reduces risk in time-based analytics and enhances developer productivity through clearer arithmetic abstractions and a more robust test suite.
6 Commits • 1 Features
Jan 1, 2025January 2025 (Altinity/ClickHouse): Implemented the DateTime64 subtraction operator supporting subtraction with other date/time types, with improved precision, overflow checks, and decimal overflow handling. Updated tests to cover new semantics and fixed failures related to session_timezone/timezone handling. Refactored the binary arithmetic utility using template lambdas to improve maintainability. Updated documentation to reflect the new operator and its edge cases. This work reduces risk in time-based analytics and enhances developer productivity through clearer arithmetic abstractions and a more robust test suite.
January 2025
Activity
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Quality Metrics
Correctness98.4%
Maintainability90.0%
Architecture86.6%
Performance81.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++MarkdownSQL
Technical Skills
Arithmetic OperationsC++Data TypesDatabaseDatabase DevelopmentDatabase TestingDocumentationError HandlingOperator OverloadingPerformance OptimizationRefactoringSQLTemplate MetaprogrammingTesting
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