Release: 1.4.36
current release
| Release Date: April 26, 2022
SQLAlchemy 1.4 Documentation
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Using the Session¶
The declarative base and ORM mapping functions described at
Mapper Configuration are the primary configurational interface for the
ORM. Once mappings are configured, the primary usage interface for
persistence operations is the
Session
.
- Session Basics
- State Management
- Cascades
- Transactions and Connection Management
- Additional Persistence Techniques
- Embedding SQL Insert/Update Expressions into a Flush
- Using SQL Expressions with Sessions
- Forcing NULL on a column with a default
- Fetching Server-Generated Defaults
- Using INSERT, UPDATE and ON CONFLICT (i.e. upsert) to return ORM Objects
- Partitioning Strategies (e.g. multiple database backends per Session)
- Bulk Operations
- Contextual/Thread-local Sessions
- Tracking queries, object and Session Changes with Events
- Session API
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