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# dialects/mssql/aioodbc.py # Copyright (C) 2005-2024 the SQLAlchemy authors and contributors # <see AUTHORS file> # # This module is part of SQLAlchemy and is released under # the MIT License: https://www.opensource.org/licenses/mit-license.php # mypy: ignore-errors r""" .. dialect:: mssql+aioodbc :name: aioodbc :dbapi: aioodbc :connectstring: mssql+aioodbc://<username>:<password>@<dsnname> :url: https://pypi.org/project/aioodbc/ Support for the SQL Server database in asyncio style, using the aioodbc driver which itself is a thread-wrapper around pyodbc. .. versionadded:: 2.0.23 Added the mssql+aioodbc dialect which builds on top of the pyodbc and general aio* dialect architecture. Using a special asyncio mediation layer, the aioodbc dialect is usable as the backend for the :ref:`SQLAlchemy asyncio <asyncio_toplevel>` extension package. Most behaviors and caveats for this driver are the same as that of the pyodbc dialect used on SQL Server; see :ref:`mssql_pyodbc` for general background. This dialect should normally be used only with the :func:`_asyncio.create_async_engine` engine creation function; connection styles are otherwise equivalent to those documented in the pyodbc section:: from sqlalchemy.ext.asyncio import create_async_engine engine = create_async_engine( "mssql+aioodbc://scott:tiger@mssql2017:1433/test?" "driver=ODBC+Driver+18+for+SQL+Server&TrustServerCertificate=yes" ) """ from __future__ import annotations from .pyodbc import MSDialect_pyodbc from .pyodbc import MSExecutionContext_pyodbc from ...connectors.aioodbc import aiodbcConnector class MSExecutionContext_aioodbc(MSExecutionContext_pyodbc): def create_server_side_cursor(self): return self._dbapi_connection.cursor(server_side=True) class MSDialectAsync_aioodbc(aiodbcConnector, MSDialect_pyodbc): driver = "aioodbc" supports_statement_cache = True execution_ctx_cls = MSExecutionContext_aioodbc dialect = MSDialectAsync_aioodbc
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