From 0358e275dd960f5bddd11342c6502f7769e2a9f5 Mon Sep 17 00:00:00 2001 From: Gord Thompson Date: Sat, 18 Apr 2020 17:04:03 -0600 Subject: Update pymssql information for mssql dialect Change-Id: I94cf63299a094b53e7078b282311f7d0faa256a6 --- lib/sqlalchemy/dialects/mssql/pymssql.py | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'lib/sqlalchemy/dialects') diff --git a/lib/sqlalchemy/dialects/mssql/pymssql.py b/lib/sqlalchemy/dialects/mssql/pymssql.py index 2d355d964..ef15bb266 100644 --- a/lib/sqlalchemy/dialects/mssql/pymssql.py +++ b/lib/sqlalchemy/dialects/mssql/pymssql.py @@ -10,14 +10,27 @@ :name: pymssql :dbapi: pymssql :connectstring: mssql+pymssql://:@/?charset=utf8 - :url: http://pymssql.org/ pymssql is a Python module that provides a Python DBAPI interface around -`FreeTDS `_. Compatible builds are available for -Linux, MacOSX and Windows platforms. +`FreeTDS `_. + +Modern versions of this driver worked very well with SQL Server and FreeTDS +from Linux and were highly recommended. However, pymssql is currently +unmaintained and has fallen behind the progress of the Microsoft ODBC driver in +its support for newer features of SQL Server. The latest official release of +pymssql at the time of this docuemnt is August, 2018 and lacks support for: + +1. table-valued parameters (TVPs), +2. ``datetimeoffset`` columns using timezone-aware ``datetime`` objects + (values are sent and retrieved as strings), and +3. encrypted connections (e.g., to Azure SQL), when pymssql is installed from + the pre-built wheels. Support for encrypted connections requires building + pymssql from source, which can be a nuisance, especially under Windows. + +The above features are all supported by mssql+pyodbc when using Microsoft's +ODBC Driver for SQL Server (msodbcsql), which is now available for Windows, +(several flavors of) Linux, and macOS. -Modern versions of this driver work very well with SQL Server and -FreeTDS from Linux and is highly recommended. """ # noqa import re -- cgit v1.2.1