Nested transactions with SQLAlchemy and sqlite

Question

I\'m writing an application in Python using SQLAlchemy (and Elixir) with SQLite as the database backend. I start a new transaction using the code session.begin_transac

Answer 1

Although sqlite does appear to support nested transactions via SAVEPOINT, it's only as of version 3.6.8, released 2009 Jan 12. Python, at least up to v2.6, uses earlier versions:

c:\svn\core\apps\general>python
Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit (Intel)] on win32
>>> import sqlite3 as s
>>> s.sqlite_version
'3.5.9'

I believe you can install PySqlite yourself and the latest appears to support v3.6.12. I can't say for sure this will solve your problem though, but I believe the answer explains why it's not working for you now.