A Python library for interacting with Microsoft SQL Server

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General Availability Release

mssql‑python is now Generally Available (GA) as Microsoft’s official Python driver for SQL Server, Azure SQL, and SQL databases in Fabric. This release delivers a production‑ready, high‑performance, and developer‑friendly experience.

What makes mssql-python different?

Powered by DDBC – Direct Database Connectivity

Most Python SQL Server drivers, including pyodbc, route calls through the Driver Manager, which has slightly different implementations across Windows, macOS, and Linux. This results in inconsistent behavior and capabilities across platforms. Additionally, the Driver Manager must be installed separately, creating friction for both new developers and when deploying applications to servers.

At the heart of the mssql-python driver is DDBC (Direct Database Connectivity) — a lightweight, high-performance C++ layer that replaces the platform’s Driver Manager.

Key Advantages:

Provides a consistent, cross-platform backend that handles connections, statements, and memory directly.
Interfaces directly with the native SQL Server drivers.
Integrates with the same TDS core library that powers the ODBC driver.

Why is this architecture important?

By simplifying the architecture, DDBC delivers:

Consistency across platforms
Lower function call overhead
Zero external dependencies on Windows (pip install mssql-python is all you need)
Full control over connections, memory, and statement handling

Built with PyBind11 + Modern C++ for Performance and Safety

To expose the DDBC engine to Python, mssql-python uses PyBind11 – a modern C++ binding library.

PyBind11 provides:

Native-speed execution with automatic type conversions
Memory-safe bindings
Clean and Pythonic API, while performance-critical logic remains in robust, maintainable C++.

What's new in v1.5.0

Features

Apache Arrow Fetch Support - Added high-performance Arrow-based data fetching via cursor.arrow(), cursor.arrow_batch(), and cursor.arrow_reader(), enabling zero-copy integration with pandas, Polars, and other Arrow-native data frameworks.
sql_variant Type Support - Added support for the sql_variant complex SQL Server data type.
Native UUID Support - Added native support for fetching and binding UUID/GUID values without manual string conversion.
Row Class Export - Row class is now publicly exported from the top-level mssql_python module for easier use in type annotations and downstream code.

Bug Fixes

Qmark False Positive Fix - Fixed false positive qmark (?) detection for ? appearing inside bracketed identifiers, string literals, and SQL comments.
NULL VARBINARY Parameter Fix - Fixed NULL parameter type mapping for VARBINARY columns.
Bulkcopy Auth Fix - Fixed stale auth fields being retained in pycore_context after token acquisition during bulk copy operations.
Explicit Module Exports - Added explicit __all__ exports from the main library module to prevent import resolution issues.
Credential Cache Fix - Fixed credential instance cache to correctly reuse and invalidate cached credential objects.
datetime.time Microseconds Fix - Fixed stored datetime.time values incorrectly having microseconds set to zero.
Arrow Time Fractional Seconds Fix - Fixed time handling in Arrow integration to correctly include fractional seconds.

For more information, please visit the project link on Github: https://github.com/microsoft/mssql-python

If you have any feedback, questions or need support please mail us at mssql-python@microsoft.com.

What's Next

As we continue to refine the driver and add new features, you can expect regular updates, optimizations, and bug fixes. We encourage you to contribute, provide feedback and report any issues you encounter, as this will help us improve the driver.

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This version

1.5.0

Apr 10, 2026

1.4.0

Feb 27, 2026

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Jan 30, 2026

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Jan 16, 2026

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Dec 19, 2025

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Nov 18, 2025

1.0.0a0 pre-release

Feb 19, 2025

0.14.0

Nov 15, 2025

0.13.1

Oct 14, 2025

0.13.0

Oct 1, 2025

0.12.0

Sep 26, 2025

0.11.0

Sep 19, 2025

0.10.0

Sep 8, 2025

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Aug 12, 2025

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Jul 18, 2025

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Jul 17, 2025

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Jul 4, 2025

0.6.0

Jun 19, 2025

0.5.0

Jun 2, 2025

0.1.6

May 15, 2025

0.1.5

Mar 3, 2025

0.1.4

Feb 20, 2025

0.1.3

Feb 19, 2025

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mssql-python 1.5.0

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