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========================
SQLAlchemy Documentation
========================

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        Getting Started

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    New to SQLAlchemy?   Start here:

    * **For Python Beginners:** :ref:`Installation Guide <installation>` - basic guidance on installing with pip and similar

    * **For Python Veterans:** :doc:`SQLAlchemy Overview <intro>` - brief architectural overview

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        Tutorials

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    New users of SQLAlchemy, as well as veterans of older SQLAlchemy
    release series, should start with the
    :doc:`/tutorial/index`, which covers everything an Alchemist needs
    to know when using the ORM or just Core.

    * **For a quick glance:** :doc:`/orm/quickstart` - a glimpse at what working with the ORM looks like

    * **For all users:** :doc:`/tutorial/index` - In depth tutorial for Core and ORM


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        Migration Notes

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    Users coming from older versions of SQLAlchemy, especially those transitioning
    from the 1.x style of working, will want to review this documentation.

    * :doc:`Migrating to SQLAlchemy 2.0 <changelog/migration_20>` - Complete background on migrating from 1.3 or 1.4 to 2.0
    * :doc:`What's New in SQLAlchemy 2.0? <changelog/whatsnew_20>` - New 2.0 features and behaviors beyond the 1.x migration
    * :doc:`Changelog catalog <changelog/index>` - Detailed changelogs for all SQLAlchemy Versions


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      Reference and How To


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    **SQLAlchemy ORM** - Detailed guides and API reference for using the ORM

    * **Mapping Classes:**
      :doc:`Mapping Python Classes <orm/mapper_config>` |
      :doc:`Relationship Configuration <orm/relationships>`

    * **Using the ORM:**
      :doc:`Using the ORM Session <orm/session>` |
      :doc:`ORM Querying Guide <orm/queryguide/index>` |
      :doc:`Using AsyncIO <orm/extensions/asyncio>`

    * **Configuration Extensions:**
      :doc:`Association Proxy <orm/extensions/associationproxy>` |
      :doc:`Hybrid Attributes <orm/extensions/hybrid>` |
      :doc:`Mutable Scalars <orm/extensions/mutable>` |
      :doc:`Automap <orm/extensions/automap>` |
      :doc:`All extensions <orm/extensions/index>`

    * **Extending the ORM:**
      :doc:`ORM Events and Internals <orm/extending>`

    * **Other:**
      :doc:`Introduction to Examples <orm/examples>`

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    **SQLAlchemy Core** - Detailed guides and API reference for working with Core

    * **Engines, Connections, Pools:**
      :doc:`Engine Configuration <core/engines>` |
      :doc:`Connections, Transactions, Results <core/connections>` |
      :doc:`AsyncIO Support <orm/extensions/asyncio>` |
      :doc:`Connection Pooling <core/pooling>`

    * **Schema Definition:**
      :doc:`Overview <core/schema>` |
      :ref:`Tables and Columns <metadata_describing_toplevel>` |
      :ref:`Database Introspection (Reflection) <metadata_reflection_toplevel>` |
      :ref:`Insert/Update Defaults <metadata_defaults_toplevel>` |
      :ref:`Constraints and Indexes <metadata_constraints_toplevel>` |
      :ref:`Using Data Definition Language (DDL) <metadata_ddl_toplevel>`

    * **SQL Statements:**
      :doc:`SQL Expression Elements <core/sqlelement>` |
      :doc:`Operator Reference <core/operators>` |
      :doc:`SELECT and related constructs <core/selectable>` |
      :doc:`INSERT, UPDATE, DELETE <core/dml>` |
      :doc:`SQL Functions <core/functions>` |
      :doc:`Table of Contents <core/expression_api>`



    * **Datatypes:**
      :ref:`Overview <types_toplevel>` |
      :ref:`Building Custom Types <types_custom>` |
      :ref:`Type API Reference <types_api>`

    * **Core Basics:**
      :doc:`Overview <core/api_basics>` |
      :doc:`Runtime Inspection API <core/inspection>` |
      :doc:`Event System <core/event>` |
      :doc:`Core Event Interfaces <core/events>` |
      :doc:`Creating Custom SQL Constructs <core/compiler>`

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        Dialect Documentation

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      The **dialect** is the system SQLAlchemy uses to communicate with various types of DBAPIs and databases.
      This section describes notes, options, and usage patterns regarding individual dialects.

      :doc:`PostgreSQL <dialects/postgresql>` |
      :doc:`MySQL and MariaDB <dialects/mysql>` |
      :doc:`SQLite <dialects/sqlite>` |
      :doc:`Oracle Database <dialects/oracle>` |
      :doc:`Microsoft SQL Server <dialects/mssql>`

      :doc:`More Dialects ... <dialects/index>`

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        Supplementary

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    * :doc:`Frequently Asked Questions <faq/index>` - A collection of common problems and solutions
    * :doc:`Glossary <glossary>` - Terms used in SQLAlchemy's documentation
    * :doc:`Error Message Guide <errors>` - Explanations of many SQLAlchemy Errors
    * :doc:`Complete table of of contents <contents>`
    * :ref:`Index <genindex>`
