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CURRENT RELEASES

1.4.26 - 2021-10-19 - announce
changes | migration notes | docs
1.3.24 - 2021-03-30 - announce
changes | migration notes | docs
2.0 - next major series
What's New in 2.0? | docs
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LATEST NEWS

 * SQLAlchemy 1.4.26 Released
   Tue, 19 Oct 2021
 * SQLAlchemy 1.4.25 Released
   Thu, 23 Sep 2021
 * SQLAlchemy 1.4.24 Released
   Wed, 22 Sep 2021
 * SQLAlchemy 1.4.23 Released
   Wed, 18 Aug 2021
 * SQLAlchemy 1.4.22 Released
   Thu, 22 Jul 2021

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THE PYTHON SQL TOOLKIT AND OBJECT RELATIONAL MAPPER

SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives
application developers the full power and flexibility of SQL.

It provides a full suite of well known enterprise-level persistence patterns,
designed for efficient and high-performing database access, adapted into a
simple and Pythonic domain language.


SQLALCHEMY'S PHILOSOPHY

SQL databases behave less like object collections the more size and performance
start to matter; object collections behave less like tables and rows the more
abstraction starts to matter. SQLAlchemy aims to accommodate both of these
principles.

SQLAlchemy considers the database to be a relational algebra engine, not just a
collection of tables. Rows can be selected from not only tables but also joins
and other select statements; any of these units can be composed into a larger
structure. SQLAlchemy's expression language builds on this concept from its
core.

SQLAlchemy is most famous for its object-relational mapper (ORM), an optional
component that provides the data mapper pattern, where classes can be mapped to
the database in open ended, multiple ways - allowing the object model and
database schema to develop in a cleanly decoupled way from the beginning.

SQLAlchemy's overall approach to these problems is entirely different from that
of most other SQL / ORM tools, rooted in a so-called complimentarity- oriented
approach; instead of hiding away SQL and object relational details behind a wall
of automation, all processes are fully exposed within a series of composable,
transparent tools. The library takes on the job of automating redundant tasks
while the developer remains in control of how the database is organized and how
SQL is constructed.

The main goal of SQLAlchemy is to change the way you think about databases and
SQL!

Read some key features of SQLAlchemy, as well as what people are saying about
SQLAlchemy.

Who Uses SQLAlchemy

SQLAlchemy is used by organizations such as:

 * Yelp!
 * reddit
 * DropBox
 * The OpenStack Project
 * Survey Monkey



Learn More
 * Library - main index of documentation, videos, talks, and more
 * Overview of Key Features
 * Testimonials

Resources
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 * Development

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