Release: 2.0.52 | Release Date: August 11, 2026

# SQLAlchemy 2.0 Documentation

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### SQLAlchemy ORM

- ORM Quick Start
- ORM Mapped Class Configuration
  - ORM Mapped Class Overview
  - Mapping Classes with Declarative
  - Integration with dataclasses and attrs
  - SQL Expressions as Mapped Attributes
  - Changing Attribute Behavior
  - Composite Column Types
  - Mapping Class Inheritance Hierarchies
  - Non-Traditional Mappings
  - Configuring a Version Counter
  - Class Mapping API
  - Mapping SQL Expressions
    - Mapping Table Columns
- Relationship Configuration
- ORM Querying Guide
- Using the Session
- Events and Internals
- ORM Extensions
- ORM Examples

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- SQLAlchemy ORM

- ORM Mapped Class Configuration

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- Mapping SQL Expressions

# Mapping SQL Expressions

This page has been merged into the ORM Mapped Class Configuration index.

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