A Python library for interacting with SQL databases using Python objects, combining Pydantic and SQLAlchemy.
SQLModel is a Python library for interacting with SQL databases using Python objects. It combines Pydantic and SQLAlchemy to provide an intuitive, type-annotated way to define database models and perform operations, minimizing code duplication and improving developer experience.
Python developers building applications with SQL databases, especially those using FastAPI who want seamless integration with type-safe data models.
Developers choose SQLModel because it reduces boilerplate code by unifying Pydantic models and SQLAlchemy tables, offers excellent editor support with autocompletion, and is specifically designed for compatibility with FastAPI.
SQL databases in Python, designed for simplicity, compatibility, and robustness.
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SQLModel combines SQLAlchemy tables and Pydantic schemas into a single class, eliminating code duplication, as shown in the README example where the Hero class serves both database and validation purposes.
The README emphasizes excellent editor support with autocompletion and inline errors, reducing debugging time and improving productivity through intuitive type annotations.
Designed by the same author as FastAPI, SQLModel works effortlessly with FastAPI, allowing direct use of models in request/response validation without additional glue code, as highlighted in the documentation.
Built on SQLAlchemy and Pydantic, SQLModel inherits their robustness and extensibility, ensuring compatibility with a wide range of database features and data validation rules, as stated in the philosophy section.
The documentation and examples primarily use synchronous sessions, and leveraging SQLAlchemy's async features requires additional setup and knowledge beyond SQLModel's streamlined interface, which may hinder async-first projects.
As a layer on top of SQLAlchemy, SQLModel can obscure advanced SQLAlchemy functionalities, making complex queries or custom mappings more cumbersome to implement for power users.
SQLModel's design is inextricably linked to specific versions of SQLAlchemy and Pydantic, which could lead to breaking changes or compatibility issues if those libraries evolve in incompatible ways, adding maintenance risk.