Added
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Add VECTOR(FLOAT16) Subtype Support #2899Expand commentComment on line R10Resolved
What was added: Introduced support for the VECTOR(FLOAT16) subtype, including feature negotiation and IEEE-754 compliant serialization/deserialization between Java Float[] and half-precision wire format.
Who benefits: Applications building AI, embeddings, and vector search workloads that require reduced memory footprint and network payload.
Impact: Enables efficient float16 vector storage and transmission while preserving backward compatibility and the existing Java programming model. -
Add prepareMethod=none Execution Path#2890
What was added: New prepareMethod=none option that forces literal parameter substitution with SQL batch execution, bypassing server-side prepared statement handles (sp_prepexec / sp_prepare).
Who benefits: Applications preferring SQL Server–managed plan caching without driver-managed prepared handle reuse.
Impact: Executes prepared statements as plain SQL batches, maintaining connection-level temp tables and providing a simplified alternative execution model while leaving the default behavior unchanged. -
Statement-Level Performance Logger Metrics#2885
What was added: Extended Performance Logger to capture detailed execution metrics for Statement and PreparedStatement (REQUEST_BUILD, FIRST_SERVER_RESPONSE, PREPARE, PREPEXEC, EXECUTE).
Who benefits: Developers and performance engineers analyzing execution timing and driver behavior.
Impact: Provides granular observability across all statement execution paths with minimal overhead. -
StateMachineTest Framework for JUnit 5#2887
What was added: Lightweight, seed-reproducible state-machine testing framework for randomized JDBC state exploration.
Who benefits: Driver maintainers and CI stability efforts.
Impact: Improves edge-case detection with reproducible failures without third-party dependencies. -
Add AI-Assisted Development Context Files#2882
What was added: ARCHITECTURE.md, GLOSSARY.md, and PATTERNS.md to guide AI-assisted development.
Who benefits: Contributors using AI coding assistants.
Impact: Improves code consistency and productivity by documenting architecture and established design patterns. -
Enhance Code Coverage (CallableStatement, DatabaseMetaData, PreparedStatement)#2875
What was added: Expanded unit and integration test coverage for key driver components including SQLServerCallableStatement, SQLServerDatabaseMetaData, and SQLServerPreparedStatement.
Who benefits: Driver maintainers and users relying on stable metadata, statement execution, and callable behavior.
Impact: Improves regression detection and long-term stability. -
New Bug Regression Tests in JUnit#2888
What was added: Migrated legacy FX regression tests (37 scenarios) covering statement execution, ResultSet behavior, batching, cursors, and transaction flows into JUnit with full behavioral parity.
Who benefits: Contributors and CI validation pipelines.
Impact: Achieves complete FX regression coverage with reproducible execution paths and improved long-term reliability.
Changed
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Remove ADAL Dependency – Migrate Windows AAD Integrated Auth to MSQA APIs#2864
What was changed: Replaced deprecated ADAL-based adalsql.dll flow with MSQA (mssql-auth.dll, MSAL C++).
Who benefits: Users of Windows Active Directory Integrated Authentication.
Impact: Fully removes legacy ADAL dependency, aligns with Microsoft deprecation guidance, and modernizes authentication architecture. -
Refactor DatabaseMetaData.getColumns() to use sp_columns_170 with fallback#2883
What was changed: getColumns() now prefers sp_columns_170 (SQL Server 2025) for accurate metadata on newer types such as VECTOR and enhanced JSON, with automatic fallback to sp_columns_100.
Who benefits: Applications performing schema discovery against SQL Server 2025 and Azure environments.
Impact: Ensures correct metadata for new engine features while preserving backward compatibility with older SQL Server versions. -
Version Bumps to Address CVEs in Transitive Dependencies#2894
What was changed: Upgraded azure-identity to 1.18.2 and msal4j to 1.23.1, which in turn update transitive dependencies including Netty (4.1.130.Final), Reactor Netty (1.2.13), and Nimbus JOSE JWT (10.0.1).
Who benefits: Applications using Azure Active Directory authentication and Azure Identity–based connection flows.
Impact: Resolves security vulnerabilities in transitive dependencies, including CVE-2025-67735, CVE-2025-53864, CVE-2025-58056, CVE-2025-58057, CVE-2025-55163, CVE-2025-24970, CVE-2025-22227, and CVE-2025-25193, with no breaking API changes.
Fixed
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Fix Cross-Database Stored Procedure Execution with Named Parameters#2895
What was fixed: Ensured sp_sproc_columns is fully qualified with database.sys to avoid context errors.
Who benefits: Applications calling procedures across databases with named parameters.
Impact: Resolves metadata lookup failures and eliminates schema name-squatting security risks. -
Exception Chaining for Nested Stored Procedure Errors#2886
What was fixed: Multiple nested RAISERROR calls now surface correctly via SQLException.getNextException.
Who benefits: Applications invoking nested stored procedures.
Impact: Aligns driver behavior with SQL Server semantics while preserving backward compatibility through lazy exception chaining. -
Remove Outdated Regex Delimiter Comment (Bulk CSV)#2880
What was fixed: Updated comment to clarify delimiters are treated as literal text in SQLServerBulkCSVFileRecord.
Who benefits: Users of bulk CSV ingestion.
Impact: Aligns documentation with actual driver behavior.