On 10/11/2016 11:05 PM, Florian Ruechel wrote:
Following this guide http://docs.sqlalchemy.org/en/latest/orm/session_transaction.html#joining-a-session-into-an-external-transaction-such-as-for-test-suites using SQLite I created the following test code: from sqlalchemy import create_engine from sqlalchemy.orm import Session engine = create_engine('sqlite:///:memory:', echo=True) conn = engine.connect() trans = conn.begin() session = Session(bind=conn) session.begin_nested() session.execute('SELECT 1') session.commit() session.begin_nested() session.execute('SELECT 1') session.rollback() trans.rollback() conn.close() Running this throws an exceptions: "/Users/fruechel/.virtualenvs/foo/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 462, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such savepoint: sa_savepoint_1 [SQL: u'RELEASE SAVEPOINT sa_savepoint_1'] I tested this with Python 2.7 & 3.5 and on SQLAlchemy 1.0.13, 1.0.15 and 1.1.1 and get the same result. Using PostgreSQL instead works perfectly fine and issues the expected queries. Before reporting this as a bug I wanted to make sure I'm not missing something, hence this mail.
yes, you are missing something. Read this: http://docs.sqlalchemy.org/en/rel_1_1/dialects/sqlite.html#pysqlite-serializable
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