To perform a "fixed" (parameterized) query in Python using sqlite3 , you must use (typically ? ) instead of f-strings or string formatting to prevent SQL injection. Correct Parameterized Query Pattern
to prevent injection and formatting bugs. sqlite3 tutorial query python fixed
def fetch_users_by_ids(user_ids: List[int]) -> List[dict]: """Fixed: Handles dynamic IN clause safely""" if not user_ids: return [] placeholders = ','.join(['?' for _ in user_ids]) query = f"SELECT * FROM users WHERE id IN (placeholders)" placeholders To perform a "fixed" (parameterized) query in