SQLite: Strange behavior with transactions and autocommit mode causing data loss
After trying multiple solutions online, I still can't figure this out. I'm relatively new to this, so bear with me... I'm experiencing a perplexing scenario while working with SQLite transactions in my application. I have a simple data insertion logic where I'm trying to insert multiple rows into a table within a transaction. However, I noticed that after executing the transaction, some of the rows seem to be missing from the database. Here's the problematic code snippet: ```python import sqlite3 conn = sqlite3.connect('example.db') cursor = conn.cursor() # Creating a sample table cursor.execute('''CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT)''') try: cursor.execute('BEGIN TRANSACTION') cursor.execute('INSERT INTO users (name) VALUES (?)', ('Alice',)) cursor.execute('INSERT INTO users (name) VALUES (?)', ('Bob',)) # Intentionally raising an behavior to check transaction rollback raise Exception('Simulated behavior') cursor.execute('INSERT INTO users (name) VALUES (?)', ('Charlie',)) cursor.execute('COMMIT') except Exception as e: print(f'behavior: {e}') cursor.execute('ROLLBACK') finally: conn.close() ``` After running this code, I expected none of the inserts to continue due to the raised exception and subsequent rollback. However, when I check the table, I find that the first two inserts for 'Alice' and 'Bob' were actually saved, while 'Charlie' is missing. It feels like there's something going on with the autocommit mode, or perhaps the way I'm managing transactions. I tried explicitly setting autocommit to false and managing the transaction manually, but the scenario continues. Here’s how I set it: ```python conn.isolation_level = None # Setting autocommit to true ``` After this, I changed my transaction management logic but still experienced data inconsistency. I would appreciate any insights on why I am observing this behavior and how to ensure that when a rollback occurs, no previous inserts within the transaction are retained. The SQLite version I’m using is 3.36.0. Any guidance on best practices for managing transactions in SQLite to avoid such issues would be greatly appreciated! How would you solve this? Any suggestions would be helpful.