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.

3 days ago · 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.

Sep 5, 2024 · The SQLAlchemy SQL Toolkit and Object Relational Mapper is a comprehensive set of tools for working with databases and Python. It has several distinct areas of functionality which can …

A detailed walkthrough of SQLAlchemy's Session, describing the rationale for its existence, its driving philosophies, and finally a walkthrough of Session lifecycle through the use of an animated diagram.

3 days ago · All of the code excerpts written with a >>> are actually run as part of SQLAlchemy’s test suite, and the reader is invited to work with the code examples given in real time with their own …

Jan 21, 2026 · The above query illustrates multiple WHERE criteria which are automatically chained together using AND, as well as how to use SQLAlchemy column-like objects to create “equality” …

Different parts of SQLAlchemy can be used independently of the rest. Elements like connection pooling, SQL statement compilation and transactional services can be used independently of each other, and …

The SQLAlchemy Object Relational Mapper presents a method of associating user-defined Python classes with database tables, and instances of those classes (objects) with rows in their …

For the extremely rare case that Python Unicode is to be encoded/decoded by SQLAlchemy on a backend that does natively support Python Unicode, the string value "force" can be passed here …

class sqlalchemy.orm.Query(entities, session=None) ¶ ORM-level SQL construction object. Query is the source of all SELECT statements generated by the ORM, both those formulated by end-user query …