Databases
python
Intermediate
SQLAlchemy Bulk Insert with Chunks
Insert thousands of rows efficiently using bulk_insert_mappings in chunks.
python
from sqlalchemy.orm import Session
from models import Module
def bulk_seed(rows: list[dict], session: Session, chunk: int = 500):
for i in range(0, len(rows), chunk):
session.bulk_insert_mappings(Module, rows[i:i+chunk])
session.commit()
print(f"Inserted {len(rows)} rows")
# Usage
bulk_seed(prepared_data, db_session)Prerequisites
- sqlalchemy >= 1.4
Pro Tips
- → Disable autoflush for large inserts: session.autoflush = False.
Commercial Licensing
Acquire a production access token or template license for enterprise deployment.
Module Info
- Language
- python
- Level
- Intermediate
- Read time
- 3 min
- Published
- Jan 2026
- License
- Commercial License
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